{"title":"Duct Detectors","description":"\u003cp\u003eA duct smoke detector samples air inside HVAC ductwork so that smoke carried by the air handling system is detected and the fan can be shut down before it spreads smoke through the building. It is not a substitute for area smoke detection; its job is to control the mechanical equipment, and code generally calls for it on larger air handlers and in return air paths.\u003c\/p\u003e\n\u003cp\u003eThe housing mounts on the outside of the duct and draws a sample through a pair of tubes: an inlet sampling tube sized to the width of the duct, and a shorter exhaust tube. Units come as 2-wire or 4-wire conventional detectors and as addressable detectors that report a point address to the panel, and most accept a remote test and reset station and auxiliary relays for fan shutdown.\u003c\/p\u003e\n\u003cp\u003eWe carry duct detectors, housings, sampling tubes, remote test stations and replacement covers from System Sensor, Simplex, Siemens, Notifier, Fire-Lite, Edwards, Potter, Kidde, Silent Knight and Air Products and Controls. Legacy duct detectors can be requested on our \u003ca href=\"\/pages\/request-a-quote\"\u003equote page\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"system-sensor-d4120-duct-smoke-detector","title":"System Sensor D4120 Duct Smoke Detector","description":"\u003cp\u003e\u003cstrong\u003eD4120\u003c\/strong\u003e — System Sensor InnovairFlex 4-wire photoelectric low-flow duct smoke detector, a complete detector comprising the D4P120 power board and the D4S plug-in sensor.\u003c\/p\u003e\n\u003cp\u003eThe InnovairFlex D4120 uses a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork, so a single part number covers most duct geometries. It senses smoke in demanding conditions — airflow from 100 to 4,000 feet per minute, −4°F to 158°F, and 0 to 95% relative humidity non-condensing. The plug-in sensor head gives improved false alarm immunity and simplifies installation, testing and maintenance, and an improved cover design isolates the sensor head from the low-flow feature. The housing provides ample wiring space, a ¾-inch conduit knockout, high contrast terminal designations and built-in short circuit protection to prevent damage from wiring errors. An easy-access Test\/Reset button allows the unit to be tested with the cover on, and three DIP switches configure cover tamper delay, the number of sensors controlled, and the shut-down-on-trouble option. Two LEDs on each power board indicate Standby, Maintenance, Trouble and Alarm, with a quick reference imprinted on the cover.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-wire photoelectric low-flow duct smoke detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower supply voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20–29 VDC, 24 VAC 50–60 Hz, or 120 VAC 50–60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax standby current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21 mA @ 24 VDC; 65 mA RMS @ 24 VAC 60 Hz; 20 mA RMS @ 120 VAC 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax alarm current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 mA @ 24 VDC; 135 mA RMS @ 24 VAC 60 Hz; 35 mA RMS @ 120 VAC 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm initiation contacts (SPST)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0 A @ 30 VDC (resistive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm auxiliary contacts (DPDT)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 A @ 30 VDC (resistive); 10 A @ 250 VAC (resistive); ½ HP @ 240 VAC; ¼ HP @ 120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupervisory contacts (SPDT)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0 A @ 30 VDC (resistive); 2.0 A @ 125 VAC (resistive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm response time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower up time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 seconds max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReset time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.03 to 0.3 sec with RTS151; 0.6 sec max by power down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReset voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.0 VDC min; 2.0 VAC min (24 VAC); 10 VAC min (120 VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e270 µF max (24 VDC and 24 VAC); not applicable on 120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir duct velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft\/min (0.5 to 20.32 m\/sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eD4120 and D4S: −4°F to 158°F (−20°C to 70°C); D4P120: −40°F to 158°F (−40°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eD4120 and D4S: −22°F to 158°F (−30°C to 70°C); D4P120: −40°F to 158°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating humidity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0% to 95% relative humidity, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize, rectangular configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.38 in (37 cm) length x 5 in (12.74 cm) width x 2.5 in (6.36 cm) depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize, square configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.75 in (19.7 cm) length x 9 in (22.9 cm) width x 2.5 in (6.35 cm) depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 lbs (1.14 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStrip and clamp method, 12–18 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eListing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 268A, listed specifically for use in air handling systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNever wire the auxiliary contacts to a panel initiating circuit.\u003c\/strong\u003e The DPDT alarm auxiliary contacts are for fan shutdown and similar duties. Use the SPST alarm initiation contact for the control panel — this is stated explicitly in the data sheet and is a common and serious wiring error.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterconnect for multi-fan shutdown:\u003c\/strong\u003e up to 50 D4120 units, 50 D4P120 units, or 50 of a combination may be interconnected. When one unit senses smoke, all interconnected detectors switch their relays, but only the detector that sensed smoke goes into alarm, which pinpoints the fire source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterconnect rules:\u003c\/strong\u003e all interconnected units must be powered from the same independent supply, and polarity must be maintained throughout — INT+ to INT+, INT\/AUX− to INT\/AUX−. An alarm can be reset only at the initiating device, not at the interconnected devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2:1 sensor-to-power:\u003c\/strong\u003e the D4120 power board can monitor a second D4S sensor simultaneously, for example supply and return side on one board. This feature is only available on the D4120 4-wire conventional models, and is arranged either as one D4120 plus one D4S, or two D4S plus one D4P120.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessory load limits:\u003c\/strong\u003e any combination of accessories may be used provided the loads total 110 mA or less at the Aux output and 50 mA or less at the Alarm output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e locally by magnetic switch or the Test\/Reset button on the cover, or remotely with the RTS151KEY remote test station or the RTS2-AOS multi-signalling accessory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tube must match duct width:\u003c\/strong\u003e DST1 up to 1 ft, DST1.5 for 1–2 ft, DST3 for 2–4 ft, DST5 for 4–8 ft, DST10 for 8–12 ft. The patented tube installs from the front or back with no tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a substitute for open area detection:\u003c\/strong\u003e duct smoke detectors are not a substitute for open area smoke detectors, not a substitute for early warning detection, and not a replacement for a building’s regular fire detection system. Refer to NFPA 72 and NFPA 90A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatible with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tubes (match duct width):\u003c\/strong\u003e \u003ca href=\"\/products\/system-sensor-dst1-metal-sampling-tube-duct-1\"\u003eDST1\u003c\/a\u003e up to 1 ft, \u003ca href=\"\/products\/system-sensor-dst1-5-metal-sampling-tube-duct\"\u003eDST1.5\u003c\/a\u003e 1–2 ft, \u003ca href=\"\/products\/system-sensor-dst3-metal-sampling-tube\"\u003eDST3\u003c\/a\u003e 2–4 ft, \u003ca href=\"\/products\/system-sensor-dst5-metal-sampling-tube-duct\"\u003eDST5\u003c\/a\u003e 4–8 ft, \u003ca href=\"\/products\/system-sensor-dst10-metal-sampling-tube-dnre-and-d2e\"\u003eDST10\u003c\/a\u003e 8–12 ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote test:\u003c\/strong\u003e \u003ca href=\"\/products\/system-sensor-rts151key-remote-resting-station\"\u003eRTS151KEY\u003c\/a\u003e keyed test station, \u003ca href=\"\/products\/system-sensor-rts2-aos-multi-signaling-accessory\"\u003eRTS2-AOS\u003c\/a\u003e multi-signaling accessory; \u003ca href=\"\/products\/system-sensor-m02-04-00-replacement-test-magnet\"\u003eM02-04-00\u003c\/a\u003e test magnet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated models\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/system-sensor-d4120w-duct-smoke-detector-4-wire\"\u003eD4120W\u003c\/a\u003e - watertight version for wet or outdoor locations\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/system-sensor-d4s-duct-smoke-detector\"\u003eD4S\u003c\/a\u003e sensor and \u003ca href=\"\/products\/system-sensor-d4p120-innovairflex-4-wire-conventional-power-board\"\u003eD4P120\u003c\/a\u003e power board - components sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/system-sensor-dnr-duct-detector\"\u003eDNR\u003c\/a\u003e \/ \u003ca href=\"\/products\/system-sensor-dnrw-duct-smoke-detector-detector-head-sold-separately\"\u003eDNRW\u003c\/a\u003e - addressable non-relay InnovairFlex duct housings for SLC systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMore: \u003ca href=\"\/collections\/duct-detectors\"\u003educt detectors\u003c\/a\u003e · \u003ca href=\"\/collections\/system-sensor\"\u003eSystem Sensor\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the System Sensor data sheet “D4120 Duct Smoke Detector,” HVDS00502 (10\/13). Manufacturer specifications are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43132757672160,"sku":"D4120","price":211.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/system-sensor-duct-detectors-default-title-system-sensor-d4120-duct-smoke-detector-32027911061728.jpg?v=1763278689"},{"product_id":"system-sensor-dnr-duct-detector","title":"System Sensor DNR Duct Detector","description":"\u003cp\u003e\u003cstrong\u003eSystem Sensor DNR duct detector\u003c\/strong\u003e — InnovairFlex intelligent (addressable) non-relay photoelectric duct smoke detector housing, UL 268A listed for air handling systems, with an adjustable body that fits both square and rectangular mounting footprints and mounts to round or rectangular duct.\u003c\/p\u003e\n\u003cp\u003eThe DNR monitors air moving through HVAC ductwork so the fire alarm system can shut down fans and dampers before smoke is distributed through a building. It is an addressable device powered from the communication line only, with no on-board relay — the housing has space to mount a relay module if the application needs dry contacts. The detector head and the sampling tube are ordered separately: choose a sampling tube from the DST range to match duct width, and pair the housing with a compatible plug-in sensor head whose code wheels set the address. Patented tool-free plug-in sampling tubes install from the front or the back of the housing, a ¾″ conduit knockout and enlarged wiring space simplify termination, and a clear cover allows visual inspection without opening the unit. A cover tamper feature reports a trouble signal if the sensor cover is removed or improperly fitted. The InnovairFlex line is compatible with previous Innovair models, including remote test accessories, which makes retrofits straightforward.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDNR (InnovairFlex intelligent non-relay duct smoke detector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntelligent\/addressable, photoelectric, integrated low-flow technology; non-relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetector head\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCommunication line power only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical ratings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePer the detector head installation manual — the housing data sheet publishes no separate voltage or current figures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir duct velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft\/min (0.5 to 20.32 m\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e−4°F to 158°F (−20°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e−22°F to 158°F (−30°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0% to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize, rectangular configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.38″ (37 cm) length × 5″ (12.7 cm) width × 2.5″ depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize, square configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.75″ (19.7 cm) length × 9″ (22.9 cm) width × 2.5″ depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6 lb (0.73 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStrip and clamp, 12–18 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConduit knockout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e¾″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone on DNR — NEMA 4 applies to the DNRW only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTesting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLocal test by magnetic switch; remote test via RTS151 or RTS151KEY remote test station\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDCOIL current (if fitted)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17.5–26.4 VDC, 95 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRA100Z accessory current at 24 VDC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 mA standby, 12 mA max alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRTS151 \/ RTS151KEY current at 24 VDC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 mA standby, 12 mA max alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eListing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 268A, for use in air handling systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead and sampling tube are not included:\u003c\/strong\u003e the DNR is the housing. Order a compatible plug-in sensor head and a DST sampling tube sized to the duct — DST1 up to 1 ft, DST1.5 for 1–2 ft, \u003ca href=\"\/products\/system-sensor-dst3-metal-sampling-tube\"\u003eDST3\u003c\/a\u003e for 2–4 ft, \u003ca href=\"\/products\/system-sensor-dst5-metal-sampling-tube-duct\"\u003eDST5\u003c\/a\u003e for 4–8 ft, DST10 for 8–12 ft. An ETX metal exhaust tube and P48-21-00 end cap complete the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-relay means no dry contacts:\u003c\/strong\u003e the DNR signals through the addressable loop only. If the job requires contacts for fan shutdown or damper control, mount a relay module in the space the housing provides, or specify a relay version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote test needs both a coil and its own supply:\u003c\/strong\u003e using an RTS151 or RTS151KEY requires the separately sold DCOIL accessory, and the test coil circuit requires an external UL listed 24 VDC power supply — it is not powered from the communication line. Alternatively, an “R” remote-test-capable detector head works with the RTS151\/RTS151KEY without the DCOIL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir velocity limits are hard limits:\u003c\/strong\u003e smoke entry depends on differential pressure across the sampling tube. Below 100 ft\/min or above 4,000 ft\/min the detector is outside its listing; verify design airflow at the mounting location, not just at the fan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCover tamper is a trouble, not an alarm:\u003c\/strong\u003e a removed or improperly seated sensor cover initiates a trouble signal. Expect it at the panel during head replacement and reseat the cover fully.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndoor housing:\u003c\/strong\u003e the DNR carries no enclosure rating. For rooftop or wet locations use the DNRW, whose NEMA 4 watertight UV-resistant housing removes the need for a separate enclosure, or fit the DH400OE-1 weatherproof enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tube orientation:\u003c\/strong\u003e the InnovairFlex tube can be inserted from the front or the back of the detector and locks in place; it is released with the front or rear locking tab. Tube inlet holes must face into the airflow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated models and accessories\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/system-sensor-dnrw-duct-smoke-detector-detector-head-sold-separately\"\u003eDNRW\u003c\/a\u003e\u003c\/strong\u003e — same intelligent non-relay duct detector in a watertight NEMA 4, UV-resistant housing for outdoor and wash-down locations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/system-sensor-dcoil-duct-accessory-coil\"\u003eDCOIL\u003c\/a\u003e\u003c\/strong\u003e — remote test coil, required with RTS451\/RTS451KEY\/RTS151\/RTS151KEY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/system-sensor-rts151-automatic-fire-detector-accessory\"\u003eRTS151\u003c\/a\u003e\u003c\/strong\u003e \/ \u003cstrong\u003e\u003ca href=\"\/products\/system-sensor-rts151key-remote-resting-station\"\u003eRTS151KEY\u003c\/a\u003e\u003c\/strong\u003e — remote test station, plain and key-locked\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/system-sensor-ra100z-remote-annunciator\"\u003eRA100Z\u003c\/a\u003e\u003c\/strong\u003e — remote annunciator alarm LED, one per unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM02-04-00\u003c\/strong\u003e — test magnet for local magnetic-switch testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/system-sensor-dh400oe-1-weatherproof-housing\"\u003eDH400OE-1\u003c\/a\u003e\u003c\/strong\u003e — weatherproof enclosure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSpecifications taken from the System Sensor data sheet “Intelligent Non-Relay Photoelectric Duct Smoke Detector,” document A05-0422-005 (9\/10). Manufacturer specifications are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eDocuments\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/System-Sensor-DNR-DNRW-Duct-Detector-Data-Sheet.pdf?v=1793422219\" target=\"_blank\" rel=\"noopener\"\u003eDNR and DNRW Duct Smoke Detectors — Data Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43132757967072,"sku":"DNR","price":199.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/system-sensor-duct-detectors-default-title-system-sensor-dnr-duct-detector-31897172803808.jpg?v=1763278681"},{"product_id":"system-sensor-dnrw-duct-smoke-detector-detector-head-sold-separately","title":"System Sensor DNRW Duct Smoke Detector (Detector Head Sold Separately)","description":"\u003cp\u003e\u003cstrong\u003eDNRW\u003c\/strong\u003e — System Sensor InnovairFlex watertight intelligent (addressable) non-relay photoelectric low-flow duct smoke detector housing, NEMA Type 4 rated. The detector head is sold separately.\u003c\/p\u003e\n\u003cp\u003eThe InnovairFlex housing adjusts to both square and rectangular installation footprints, mounts to round or rectangular ductwork, and uses patented tool-free plug-in sampling tubes, so one part number covers a wide range of duct geometries. The DNRW is the watertight member of the family: its NEMA 4-rated, UV-resistant housing and cover protect against windblown dirt and dust, rain and hose-directed water, which lets it be installed on a rooftop or other outdoor air handler without a separate costly enclosure. The housing cover isolates the sensor head from the low-flow feature to simplify maintenance, a cover tamper feature raises a trouble signal if the sensor cover is removed or improperly installed, and a clear cover allows visual inspection without opening the unit. A ¾-inch conduit knockout and internal space for mounting a relay module are provided. The unit requires com line power only, and the InnovairFlex line is compatible with previous Innovair models including their remote test accessories.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntelligent (addressable) non-relay photoelectric low-flow duct smoke detector housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetector head\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNEMA Type 4 (DNRW only), UL listed for non-hazardous indoor and outdoor applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUV-resistant, UL-listed housing and cover (DNRW only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir duct velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft\/min (0.5 to 20.32 m\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e−4°F to 158°F (−20°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e−22°F to 158°F (−30°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating humidity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0% to 95% relative humidity, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize, rectangular configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.38 in (37 cm) length x 5 in (12.7 cm) width x 2.5 in (6.35 cm) depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize, square configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.75 in (19.7 cm) length x 9 in (22.9 cm) width x 2.5 in (6.35 cm) depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6 lb (0.73 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStrip and clamp method, 12–18 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConduit knockout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e¾ inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDCOIL rating (if included)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17.5–26.4 VDC, 95 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccessory current at 24 VDC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRA100Z and RTS151\/RTS151KEY: 0 mA standby, 12 mA max in alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eListing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 268A, listed specifically for use in air handling systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead not included:\u003c\/strong\u003e this part is the duct housing. The detector head is ordered separately, and the electrical specifications for the assembled detector come from the detector head installation manual — the housing data sheet does not publish standby or alarm current for the sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote test needs two extra parts:\u003c\/strong\u003e using an RTS151 or RTS151KEY remote test station requires the accessory DCOIL test coil, sold separately, \u003cem\u003eand\u003c\/em\u003e an external UL listed 24 VDC power supply for the test coil circuit. The coil draws 95 mA. Budget both before quoting a remote test station.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocal testing\u003c\/strong\u003e is by magnetic switch using the M02-04-00 test magnet; remote testing uses the RTS151KEY.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVelocity limits are hard limits:\u003c\/strong\u003e the detector is listed from 100 ft\/min to 4,000 ft\/min. Verify duct velocity at the intended location across the full range of fan operation, including part-load, before committing to the position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tube must match duct width:\u003c\/strong\u003e tubes are ordered separately by duct width (DST1 up to 1 ft, DST1.5 for 1–2 ft, DST3 for 2–4 ft, DST5 for 4–8 ft, DST10 for 8–12 ft). Tubes are tool-free plug-in and may be installed from the front or the back of the detector; use the P48-21-00 end cap on metal sampling tubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-relay:\u003c\/strong\u003e there are no on-board Form C contacts. Where dry contacts are needed for fan shutdown or damper control, mount a relay module in the space the housing provides, or use a relay version of the detector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutdoor use:\u003c\/strong\u003e the NEMA 4 rating covers non-hazardous locations only. It is not a hazardous-location rating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated models\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDNR\u003c\/strong\u003e — the same intelligent non-relay low-flow duct smoke detector without the watertight NEMA 4 and UV-resistant housing; for indoor, protected locations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDCOIL\u003c\/strong\u003e — remote test coil, required with the RTS151, RTS151KEY, RTS451 or RTS451KEY.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRTS151KEY\u003c\/strong\u003e — remote test station with key lock; \u003cstrong\u003eRTS151\u003c\/strong\u003e is the same without the lock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRA100Z\u003c\/strong\u003e — remote annunciator alarm LED.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eETX\u003c\/strong\u003e — metal exhaust tube for duct width 1 ft (0.3 m); \u003cstrong\u003eDH400OE-1\u003c\/strong\u003e weatherproof enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM02-04-00\u003c\/strong\u003e — test magnet for local magnetic testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSpecifications taken from the System Sensor data sheet “Intelligent Non-Relay Photoelectric Duct Smoke Detector,” document A05-0422-005 (9\/10). Manufacturer specifications are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eDocuments\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/System-Sensor-DNR-DNRW-Duct-Detector-Data-Sheet.pdf?v=1793422219\" target=\"_blank\" rel=\"noopener\"\u003eDNR and DNRW Duct Smoke Detectors — Data Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43132757999840,"sku":"DNRW","price":230.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/system-sensor-duct-detectors-default-title-system-sensor-dnrw-duct-smoke-detector-detector-head-sold-separately-31897169330400.jpg?v=1793438428"},{"product_id":"siemens-fdbz492-hr-s54319-b23-a1-duct-detector-2-wire","title":"Siemens FDBZ492-HR (S54319-B23-A1) Duct Detector 2-Wire","description":"\u003cp\u003e\u003cstrong\u003eSiemens FDBZ492-HR (S54319-B23-A1)\u003c\/strong\u003e — two-wire addressable air-duct detector housing with a programmable relay base, designed for direct use on HVAC air-duct systems and compatible with the FDBZ492-RTL remote test switch. The detector head and sampling tube are purchased separately.\u003c\/p\u003e\n\u003cp\u003eThe FDBZ492-HR is the housing and relay base: the detector head and the sampling tube are purchased separately. Duct air is drawn through a sampling tube into the housing's sampling chamber, and when equipped the housing signals the presence of smoke being carried through the duct system. The cover is clear with a smoke test port, so the detector type can be identified without opening it, and the head plugs in and out for cleaning or replacement by a trained technician. Installation calls for three small holes for the sampling tube (a template is supplied) and two holes to mount the housing; no mechanical tools are needed to remove the cover or connect the sampling and exhaust tubes. The housing accepts a range of Siemens addressable heads including OOH941, OOHC941, OP921, FP-11, HFP-11, HFPO-11, SFP-11 and SFPO-11, and Models 8710 and 8713.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eS54319-B23-A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo-wire addressable air-duct detector housing with relays (programmable relay base)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir-duct velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft.\/min (0.51 to 20 m\/sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+32°F (0°C) to 120°F (49°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelative humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSampling tube pressure differential\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreater than 0.01 in. and less than 1.2 in. of water column\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo effect\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAltitude range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo limitations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions, rectangular (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.38 in. x 5 in. x 2.5 in. (37 cm x 12.7 cm x 6.36 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions, square (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.75 in. x 9 in. x 2.5 in. (19.7 cm x 22.9 cm x 6.36 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetector weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8 lbs. (0.82 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust tube\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShort-return (outlet) tube, approx. 5.5 in. (14 cm) fixed length, supplied with the housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring entries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThree wiring entry ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible heads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOOH941, OOHC941, OP921, FP-11, HFP-11, HFPO-11, SFP-11, SFPO-11, 8710, 8713\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree separate purchases:\u003c\/strong\u003e the minimum hardware for a working duct detector is one air-duct housing assembly, one sampling tube, and one detector head. Only the housing assembly is this part number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize the sampling tube to the duct:\u003c\/strong\u003e ST-10 for duct widths 6 in. to 1 ft., ST-25 for 1 ft. to 3 ft., ST-50 for 3 ft. to 5 ft., ST-100 for 5 ft. to 10 ft. The ST-50 and ST-100 both require support, and the ST-100 ships as two 5-ft. pieces with a coupling for field assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVelocity window is a design constraint:\u003c\/strong\u003e the housing is designed for 100 to 4,000 fpm. Below 100 fpm there is not enough differential pressure across the tube to sample reliably.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote testing:\u003c\/strong\u003e the FDBZ492-RTL key-switch (S54319-S27-A1) mounts remotely, indicates the detector's current state and allows manual relay-output control — the usual answer when the housing sits above a hard ceiling or inside plant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWet or outdoor locations:\u003c\/strong\u003e the FDBZ-WT (S54319-B26-A1) NEMA 4X enclosure is the listed way to install this housing outdoors or where excessive moisture is present.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e the sampling chamber cover comes off for service and the head unplugs, so the housing and tubing can stay in the duct.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay contact ratings\u003c\/strong\u003e are published in a graphical table in the data sheet that does not survive text extraction; confirm them against the printed data sheet or installation instructions before designing interlocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated models\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFDBZ492 (S54319-B22-A1)\u003c\/strong\u003e — the same housing without relays, addressable or conventional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFDBZ492-R (S54319-B24-A1)\u003c\/strong\u003e — two-wire conventional duct detector housing with relays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFDBZ492-PR (S54319-B25-A1)\u003c\/strong\u003e — four-wire conventional housing with relays and a built-in power supply, for a self-contained duct detector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFDBZ492-RTL (S54319-S27-A1)\u003c\/strong\u003e — remote key-switch test station for the -HR, -R and -PR housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFDBZ-WT (S54319-B26-A1)\u003c\/strong\u003e — watertight NEMA 4X over-enclosure for any FDBZ492-series housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThe FDBZ492-HR accepts Siemens addressable heads including OOH941, OOHC941, OP921, FP-11, HFP-11, HFPO-11, SFP-11, SFPO-11, 8710 and 8713. The \u003ca href=\"\/products\/siemens-fdbz492-rtl-s54319-s27-a1-remote-alarm-indicator\"\u003eFDBZ492-RTL\u003c\/a\u003e remote key-switch test station works with it, and the \u003ca href=\"\/products\/siemens-fdbz492-s54319-b22-a1-duct-housing\"\u003eFDBZ492\u003c\/a\u003e is the same housing without relays.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDoes the Siemens FDBZ492-HR include a detector head?\u003c\/strong\u003e\u003cbr\u003eNo. A working duct detector needs the housing, a sampling tube and a detector head, each ordered separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat duct air velocity is supported?\u003c\/strong\u003e\u003cbr\u003e100 to 4,000 ft\/min.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSpecifications taken from the Siemens data sheet \"Cerberus® PRO Specialized Devices, Models FDBZ492, FDBZ492-HR, FDBZ492-R and FDBZ492-PR (with FDBZ-WT and FDBZ492-RTL),\" document 9906 (March 2023, Rev. 6). Manufacturer specifications are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":43132761374944,"sku":"FDBZ492-HR","price":199.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/siemens-duct-detectors-default-title-siemens-fdbz492-hr-s54319-b23-a1-duct-detector-2-wire-31896953782496.jpg?v=1763278792"},{"product_id":"siemens-fdbz492-s54319-b22-a1-duct-housing","title":"Siemens FDBZ492 Air Duct Detector Housing, Two-Wire, No Relay, S54319-B22-A1","description":"\u003cp\u003e\u003cstrong\u003eSiemens FDBZ492\u003c\/strong\u003e — air duct monitoring housing, S54319-B22-A1, supplied without relays and without a detector head.\u003c\/p\u003e\u003cp\u003eIt mounts to an HVAC duct and draws a cross-sectional air sample in through an inlet tube and out a short outlet tube, so smoke that would stratify past a spot detector still reaches the chamber. Data sheet 6156 names the minimum hardware: one housing, one sampling tube, one detector.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTwo-wire housing taking addressable or conventional Siemens detectors, no relays\u003c\/li\u003e\n\u003cli\u003eListed detectors: OP121, PE-11, PE-11C, FP-11, HFP-11, HFPO-11, SFP-11, SFPO-11, FDO421\u003c\/li\u003e\n\u003cli\u003eAir velocity 100 to 4,000 ft. per minute\u003c\/li\u003e\n\u003cli\u003eDuct temperature is set by the detector fitted: 32 to 100 °F with the PE, FP, HFP or SFP heads, 32 to 120 °F with OP121 or FDO421\u003c\/li\u003e\n\u003cli\u003eClear cover with smoke test port, four captive thumb screws\u003c\/li\u003e\n\u003cli\u003eTwo 3\/4 in. knockouts, one 1\/2 in. conduit opening, 5.5 in. outlet tube supplied\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the inlet tube by duct width: ST-10, ST-25, ST-50 or ST-100. The relay versions are separate numbers, FDBZ492-R, FDBZ492-HR and FDBZ492-PR, and only those take the FDBZ492-RTL test switch.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":43132761440480,"sku":"FDBZ492","price":134.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/siemens-duct-detectors-default-title-siemens-fdbz492-s54319-b22-a1-duct-housing-31896952537312.jpg?v=1763278780"},{"product_id":"fire-lite-d355pl-duct-smoke-detector-replaced-by-d365pl","title":"Fire-Lite D355PL Duct Smoke Detector (Replaced by D365PL)","description":"\u003cp\u003e\u003cstrong\u003eFire-Lite D355PL\u003c\/strong\u003e — InnovairFlex intelligent non-relay photoelectric low-flow duct smoke detector housing, supplied with the SD355R remote-test-capable sensor head.\u003c\/p\u003e\u003cp\u003eThe pivoting housing fits either a square or a rectangular footprint and mounts to round or rectangular duct. It draws communication line power only, and a cover tamper feature reports a removed or badly seated cover as a trouble at the panel.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAir velocity 100 to 4,000 ft\/min (0.5 to 20.32 m\/s)\u003c\/li\u003e\n\u003cli\u003eOperating temperature -4°F to 158°F (-20°C to 70°C); humidity 0 to 95 percent non-condensing\u003c\/li\u003e\n\u003cli\u003eRectangular footprint 14.38 × 5 × 2.5 in.; square 7.75 × 9 × 2.5 in.\u003c\/li\u003e\n\u003cli\u003eWeight 1.6 lb (0.73 kg), with a 3\/4 in. conduit knockout\u003c\/li\u003e\n\u003cli\u003eUL and ULC S1059, CSFM 3240-0075:0221, FM approved\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDNRW is the NEMA-4 watertight version of the same housing and ships without a head. D365PL is the later housing, carrying the SD365R(A)-IV head that Fire-Lite lists as replacing the SD355R supplied here. The CRF-300 relay module, DST sampling tubes and the RTS151 remote test station are ordered separately.\u003c\/p\u003e","brand":"Fire-Lite","offers":[{"title":"Default Title","offer_id":43132767863008,"sku":"D355PL","price":247.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/fire-lite-duct-detectors-default-title-fire-lite-d355pl-duct-smoke-detector-replaced-by-d365pl-31896799183072.jpg?v=1763278861"},{"product_id":"simplex-4098-5214-duct-housing-no-relay","title":"Simplex 4098-5214 MX Addressable Duct Sensor Housing","description":"\u003cp\u003e\u003cstrong\u003eSimplex 4098-5214\u003c\/strong\u003e — MX Technology addressable duct smoke sensor housing for the 4098-5252 photoelectric sensor.\u003c\/p\u003e\u003cp\u003eMounted outside an air-conditioning or ventilating duct, it draws a sample of the airstream across a sensor held in an internally mounted base and returns it through the exhaust tube. Simplex lists it for 4100ES and 4010ES panels with an MX Addressable Loop Module, one loop address per base.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSupplied with internal sensor base, 7 in. exhaust tube, end plug, screws and template; clear cover for inspection\u003c\/li\u003e\n\u003cli\u003eThe 4098-5252 sensor and a sampling tube are each ordered separately\u003c\/li\u003e\n\u003cli\u003eTubes by duct width: STS-2.5 for 12–30 in., STS-5.0 for 30–60, STS-10.0 for 60–120\u003c\/li\u003e\n\u003cli\u003eAir velocity 500 to 4,000 ft\/min; 32°F to 100°F\u003c\/li\u003e\n\u003cli\u003e10 × 8-1\/2 × 2-1\/4 in.; 18 to 14 AWG terminals; UL 268A\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe housing alone does not detect — order the 4098-5252 sensor and matching STS tube with it. It is backward compatible with the discontinued 4098-5202. Do not substitute the earlier TrueAlarm 4098-9681, -9752 or -9753 duct housings.\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43132776415456,"sku":"4098-5214","price":184.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-4098-5214-duct-housing-no-relay-31897047335136.jpg?v=1763279059"},{"product_id":"simplex-4098-9751-ssd-in-duct-sensor-housing","title":"Simplex 4098-9751 SSD In-Duct Sensor Housing","description":"\u003ch2\u003eSimplex 4098-9751 SSD In-Duct Sensor Housing W\/Relay\u003c\/h2\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43132777791712,"sku":"4098-9751","price":178.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-4098-9751-ssd-in-duct-sensor-housing-31897050841312.jpg?v=1763279070"},{"product_id":"simplex-4098-9755-2-wire-duct-detector","title":"Simplex 4098-9755 2-Wire Addressable Duct Detector Housing, No Relay Output","description":"\u003cp\u003e\u003cstrong\u003eSimplex 4098-9755\u003c\/strong\u003e — the basic TrueAlarm addressable duct smoke sensor housing, supplied with a factory-installed 4098-9714 photoelectric sensor and drawing all of its operating power from the IDNet or MAPNET II communications pair.\u003c\/p\u003e\n\u003cp\u003eThe 4098-9755 samples air from an HVAC duct through a sampling tube and returns it through the supplied exhaust tube, monitoring it for smoke with the internally mounted TrueAlarm photoelectric sensor. Analog values are transmitted digitally to the fire alarm control unit, which stores a running average per sensor and declares an alarm by comparing the present value against that average — the same software filtering that compensates for dust and component aging in the open-area TrueAlarm sensors, which matters in a duct because ducts are a relatively dirty environment. Duct applications typically use a less sensitive setting such as 2.5% per foot, but the full seven-level TrueAlarm range remains available per point. This is the no-relay model: it has no relay output and needs no separate 24 VDC supply, so it wires with the communications pair alone. Sampling tubes are ordered separately by duct width.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDevice type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBasic addressable duct sensor housing, no relay output; includes internally mounted 4098-9714 TrueAlarm photoelectric sensor and exhaust tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData communications and power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIDNet or MAPNET II, auto-select, one address per housing; communications also supplies operating power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor sensitivity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2% to 3.7% per foot of obscuration, selectable and monitored at the host control panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir velocity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 to 4,000 ft\/min (91 to 1,220 m\/min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure differential\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.015 to 1.55 in. of water (0.381 to 39.37 mm) between intake and exhaust tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUL listed temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32°F to 100°F (0°C to 38°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32°F to 122°F (0°C to 50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°F to 140°F (-18°C to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10% to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTerminal blocks, 18 to 12 AWG (0.82 mm² to 3.31 mm²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack ABS base with clear polycarbonate cover; sampling and exhaust tubes are black CPVC, sampling tubes pre-drilled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum duct size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 in. (203 mm) square, or 18 in. (457 mm) diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatus indication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed alarm\/trouble LED on the electrical interface board; pulses during polling, steady on for alarm, dirty or trouble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRemote indicator distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 ft (76 m) maximum; remote alarm LED 1.2 mA, test station keyswitch 3.3 mA, neither affecting 24 VDC alarm current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible control units\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4007ES, 4008, 4010, 4010ES, 4020, 4100, 4100ES, 4100E and 4120; also the 2120 CDT if configured for MAPNET II TrueAlarm operation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eListings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL listed to Standard 268A; ULC listed; FM approved; CSFM Listing 3240-0026.241; MEA (NYC) acceptance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo relay output:\u003c\/strong\u003e if the design needs fan shutdown or damper control contacts driven from this point, the 4098-9756 with its supervised 4098-9843 relay output is the correct housing. The 4098-9755 cannot drive relays and does not accept the 4098-9843.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tube ordered separately:\u003c\/strong\u003e select by overall duct width — 4098-9854 up to 12 in., 4098-9855 for 13 to 23 in., 4098-9856 for 24 to 46 in., 4098-9857 for 46 to 71 in., 4098-9858 for 71 to 95 in. Cut the two smaller tubes 1\/2 in. longer than the duct width and the three larger tubes 3 in. longer. Tubes install and service with the housing in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e mount at 90° to airflow for all orientations and do not mount on the bottom of the duct. Where the sampling tube is not vertical, FDI testing recommends positioning it horizontally in the upper half of the duct to account for stratification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow limits are a design constraint:\u003c\/strong\u003e the chosen location must deliver 300 to 4,000 ft\/min and a 0.015 to 1.55 in. water pressure differential across the tubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere to place it:\u003c\/strong\u003e downstream of filters to detect fires in the filters, in return ducts ahead of mixing areas, and upstream of humidifiers and cooling coils. Avoid outside air inlets, return air damper branch ducts and mixing areas, and points where comfort-control dampers closing would interfere with airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e duct environments are dirty, so a less sensitive setting such as 2.5% per foot is typical; sensitivity is set at the panel, not on the device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuct detection is supplementary:\u003c\/strong\u003e Johnson Controls states that duct smoke detection signals the presence of smoke in the duct, does not replace open-area smoke detection requirements, and must never be regarded as a substitute for the building fire alarm and detection system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e the clear cover allows visual inspection, two test ports permit airflow measurement and aerosol injection with the cover in place, and a magnetic test area initiates an alarm at the housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference documents:\u003c\/strong\u003e installation instructions 574-776, plus NFPA 90A, NFPA 72 and the NEMA Guide for Proper Use of Smoke Detectors in Duct Applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated models\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4098-9756\u003c\/strong\u003e — the same housing with a supervised output for up to fifteen 4098-9843 relays; requires separate fused 24 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2098-9806 \/ 2098-9808\u003c\/strong\u003e — remote test station with keyswitch and status LED, or remote red status\/alarm LED, on a single-gang stainless steel plate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4098-9854 through 4098-9858\u003c\/strong\u003e — sampling tubes in ascending lengths for duct widths from 12 in. to 95 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4098-9845\u003c\/strong\u003e — NEMA 4X weatherproof enclosure for duct housings exposed to the weather (data sheet S4098-0032)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSpecifications taken from the Simplex data sheet \"TrueAlarm Analog Sensing — Addressable Duct Sensor Housings with TrueAlarm Photoelectric Sensor; Available with Multiple Relay Control,\" document S4098-0030-10 (11\/2014). Manufacturer specifications are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43132777857248,"sku":"4098-9755","price":148.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-4098-9755-2-wire-duct-detector-31897058443488.jpg?v=1763279046"},{"product_id":"simplex-4098-9842-duct-control-station","title":"Simplex 4098-9842 Duct Control Station","description":"\u003cp\u003e\u003cstrong\u003eSimplex 4098-9842\u003c\/strong\u003e — remote duct control station for the 4098-9687 Stand Alone Duct Detector.\u003c\/p\u003e\u003cp\u003eA stand-alone duct detector strapped to ductwork above a hard ceiling is awkward to see and awkward to reset. This station brings the detector status, the sounder and the test\/reset function down to an accessible wall point, so an inspection can be witnessed and a tripped detector cleared without lifting tile. It lands on the LED, A, P, – and TEST terminals at the duct housing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGreen POWER LED, red ALARM LED and a local audible sounder\u003c\/li\u003e\n\u003cli\u003eSILENCE toggle switch plus a keyed NORMAL \/ TEST-RESET switch\u003c\/li\u003e\n\u003cli\u003e500 ft (152 m) maximum wire run from the duct housing to the station\u003c\/li\u003e\n\u003cli\u003eInstalls to a standard double-gang outlet box at least 2 inches deep, supplied by others\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSilencing the sounder does not release the alarm relay contacts at the duct detector, and if the detector head has been removed the key switch will not clear the ALARM LED. Detector, duct housing and outlet box are each sold separately.\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43132778512608,"sku":"4098-9842","price":94.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-controls-default-title-simplex-4098-9842-duct-control-station-31897058279648.jpg?v=1763279101"},{"product_id":"simplex-565-654-sensor-w-relay","title":"Simplex 565-654 Sensor W\/Relay","description":"\u003cp\u003e\u003cstrong\u003eSimplex 565-654\u003c\/strong\u003e — service replacement electronics for the relay versions of the Simplex 4098 TrueAlarm duct sensor housings.\u003c\/p\u003e\u003cp\u003eSimplex catalogs this part as \u003cem\u003e4098-9751, 9753 Sensor W\/Relay\u003c\/em\u003e. It is the relay-equipped assembly carried inside those two duct housings, not a smoke sensor head — the sensing element is the separately ordered 4098-9714 photoelectric sensor. It is what a technician orders when a housing's relay or communications section fails but the housing, sampling tube and field wiring are sound.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHost housings: 4098-9751 in-duct and 4098-9753 sampling tube\u003c\/li\u003e\n\u003cli\u003eHost housing communications: IDNet or MAPNET II, one address per housing\u003c\/li\u003e\n\u003cli\u003eHost housing relay: single Form C, 1 A @ 28 VDC power limited; 1\/2 A @ 120 VAC non-power limited\u003c\/li\u003e\n\u003cli\u003eHost housing relay power: 18 to 32 VDC, four wire, from the fire alarm system\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCheck the housing model and the number printed on the assembly you remove before ordering; Simplex lists more than one 4098 duct sensor board and they are not interchangeable.\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43132791259360,"sku":"565-654","price":79.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-565-654-sensor-w-relay-31897132761312.jpg?v=1763279346"},{"product_id":"simplex-565-925-4-wire-duct-sensor-pc-board","title":"Simplex 565-925 4-Wire Duct Sensor PC Board","description":"\u003ch2\u003eSimplex 565-925 4098 4-Wire Duct Sensor PC Board\u003c\/h2\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43132791357664,"sku":"565-925","price":58.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-sensors-default-title-simplex-565-925-4-wire-duct-sensor-pc-board-31897132335328.jpg?v=1763279368"},{"product_id":"system-sensor-d4120w-duct-smoke-detector-4-wire","title":"System Sensor D4120W Duct Smoke Detector 4-Wire","description":"\u003cp\u003e\u003cstrong\u003eSystem Sensor D4120W\u003c\/strong\u003e is an InnovairFlex watertight 4-wire photoelectric low-flow duct smoke detector. Its enclosure is rated NEMA Type 4 for non-hazardous indoor and outdoor applications, so it can be mounted on rooftop HVAC equipment and in other harsh environments.\u003c\/p\u003e\u003cp\u003eThe enclosure protects against falling dirt, rain, windblown dust, splashing and hose-directed water, and the housing and cover material are UV resistant. A pivoting housing fits square and rectangular footprints and mounts to round or rectangular duct. It senses smoke at airflow of 100 to 4,000 feet per minute, -4°F to 158°F and 0 to 95% relative humidity, non-condensing. A plug-in sensor head provides false alarm immunity, and the sampling tube installs from the front or back without tools. Compared with the standard InnovairFlex unit it keeps the same form, fit and wiring terminations and adds a 3\/4-inch conduit knockout, high-contrast terminal labels and short circuit protection against wiring errors.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWatertight 4-wire photoelectric low-flow duct smoke detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNEMA Type 4, indoor\/outdoor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20-29 VDC; 24 VAC 50-60 Hz; or 120 VAC 50-60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandby current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21 mA at 24 VDC; 65 mA RMS at 24 VAC; 20 mA RMS at 120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 mA at 24 VDC; 135 mA RMS at 24 VAC; 35 mA RMS at 120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm initiation contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSPST, 2.0 A at 30 VDC (resistive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuxiliary contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDPDT, 10 A at 30 VDC \/ 250 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-4°F to 158°F (-20°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 268A certified for air handling systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eInstallation notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatertight only if installed watertight.\u003c\/strong\u003e The data sheet requires watertight conduit and fittings, with conduit holes facing down where possible. Standard fittings void the NEMA 4 protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not wire the auxiliary contacts to a panel initiating circuit.\u003c\/strong\u003e Use the SPST alarm initiation contact for the panel; the DPDT auxiliary contacts are for fan shutdown and similar duties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-fan shutdown:\u003c\/strong\u003e up to 50 D4120W units can be interconnected on the same independent supply with polarity maintained.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tube must match duct width:\u003c\/strong\u003e DST1 up to 1 ft, DST1.5 for 1-2 ft, DST3 for 2-4 ft, DST5 for 4-8 ft, DST10 for 8-12 ft.\u003c\/li\u003e\n\u003cli\u003eDuct detectors are not a substitute for open area smoke detection. Refer to NFPA 72 and NFPA 90A.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated models and accessories\u003c\/h3\u003e\u003cp\u003eThe D4120 is the standard, non-watertight InnovairFlex 4-wire duct detector. Accessories include the RTS151 and RTS151KEY remote test stations, RTS2-AOS multi-signaling accessory, RA100Z and APA151 remote annunciators, and the DH400OE-1 weatherproof enclosure.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43132854304992,"sku":"D4120W","price":298.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/system-sensor-duct-detectors-default-title-system-sensor-d4120w-duct-smoke-detector-4-wire-33531346780384.jpg?v=1793439247"},{"product_id":"system-sensor-dh400oe-1-weatherproof-housing","title":"System Sensor DH400OE-1 Weatherproof Housing","description":"\u003ch2\u003eSystem Sensor DH400OE-1 Weatherproof Housing for the DH400ACDCIHT Conventional High-Temperature Duct Detector\u003c\/h2\u003e\u003cdiv class=\"ths-mfr-data\"\u003e\n\u003cp\u003eDH400OE-1: Weatherproof Duct Smoke Detector Enclosure\u003c\/p\u003e\n\u003cp\u003eThe System Sensor DH400OE-1 is a steel enclosure for mounting a standard indoor rated duct smoke detector outdoors.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFits both current and legacy duct smoke detectors\u003c\/li\u003e\n\u003cli\u003eEnclosure is an additional option other than using the D4120W or DNRW watertight duct smoke detectors\u003c\/li\u003e\n\u003cli\u003eDrop top shield top with seamless front, side, and back construction\u003c\/li\u003e\n\u003cli\u003eProvision for a padlock to protect the entire unit against unauthorized tampering\u003c\/li\u003e\n\u003cli\u003eSpecial sampling tube gaskets are included as required by UL 268A listing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/DH400OE-1_DataSheet_HVDS192.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDH400OE-1 Weatherproof Enclosure for Duct Smoke Detectors Datasheet\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/gamewell-101625\/hon-ba-fire-9021-60475.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDNR and DNRW Intelligent Photoelectric Duct Smoke Detectors\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/manuals-and-guides\/user-manuals\/DH4000_OE1_Manual_I56-1164.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDH4000OE-1 All Weather Enclosure Manual\u003c\/a\u003e (User Manual)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/manuals-and-guides\/user-manuals\/DH400ACDCI_Manual_I56-555.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDH400ACDCI Air Duct Smoke Detector Manual\u003c\/a\u003e (User Manual)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/manuals-and-guides\/user-manuals\/DH400ACDCIHT_Manual_I56-0991.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDH400ACDCIHT Air Duct Smoke Detector Install Manual\u003c\/a\u003e (User Manual)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43132854436064,"sku":"DH400OE-1","price":360.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/system-sensor-duct-detectors-default-title-system-sensor-dh400oe-1-weatherproof-housing-31897170313440.jpg?v=1793439275"},{"product_id":"system-sensor-rts2-aos-multi-signaling-accessory","title":"System Sensor RTS2-AOS Duct Detector Multi-Signaling Accessory with Add-On Strobe","description":"\u003cp\u003e\u003cstrong\u003eSystem Sensor RTS2-AOS\u003c\/strong\u003e — multi-signaling remote accessory with add-on strobe, for InnovairFlex four-wire conventional duct smoke detectors.\u003c\/p\u003e\u003cp\u003eA duct detector sits inside ductwork where nobody can see or reach it. The RTS2-AOS brings its status, its test and its local signaling to an accessible wall: two bicolored LEDs mirror up to two detector sensors, a key switch picks the sensor to work on, and one button tests it or resets both.\u003c\/p\u003e\u003cp\u003eA duct detector sits inside ductwork where nobody can see or reach it. The RTS2-AOS brings its status, its test and its local signaling to an accessible wall: two bicolored LEDs mirror up to two detector sensors, a key switch picks the sensor to work on, and one button tests it or resets both.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSounder rated 85 dBA at ten feet, jumper selectable temporal or continuous tone\u003c\/li\u003e\n\u003cli\u003eAOS add-on strobe included on this model; also sold alone as the AOS\u003c\/li\u003e\n\u003cli\u003eStandby, maintenance, trouble and alarm show as green blink, amber blink, amber and red\u003c\/li\u003e\n\u003cli\u003e20 to 29 VDC; 3 mA standby, 16 mA trouble, 55 mA in alarm with the strobe\u003c\/li\u003e\n\u003cli\u003eSingle or double gang mounting; remove the AOS for a single gang box\u003c\/li\u003e\n\u003cli\u003eUp to 1000 ft from the detector, each interconnecting wire under 25 Ω\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe plain RTS2 is the same accessory without the strobe. RTS151 and RTS151KEY are test stations with no sounder, APA151 is the piezo annunciator and RA100Z is an alarm LED only.\u003c\/p\u003e\u003ch3\u003eCompatibility and related models\u003c\/h3\u003e\u003cp\u003eThe RTS2-AOS is for InnovairFlex four-wire conventional duct smoke detectors. The plain \u003ca href=\"\/products\/system-sensor-rts2-multi-signaling-accessory-1\"\u003eRTS2\u003c\/a\u003e is the same accessory without the strobe. The \u003ca href=\"\/products\/system-sensor-rts151key-remote-resting-station\"\u003eRTS151KEY\u003c\/a\u003e is a test station with no sounder.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDoes the RTS2-AOS include the strobe?\u003c\/strong\u003e\u003cbr\u003eYes. The AOS add-on strobe is included, and it is also sold alone as the AOS.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow far from the detector can it be installed?\u003c\/strong\u003e\u003cbr\u003eUp to 1000 ft, with each interconnecting wire under 25 Ω.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43132862300384,"sku":"RTS2-AOS","price":166.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/1018877759_lg.jpg?v=1793439688"},{"product_id":"siemens-tsm-1-500-696353-duct-detector-test-switch","title":"Siemens TSM-1 (500-696353) Duct Detector Test Switch","description":"\u003ch2\u003eSiemens TSM-1 (500-696353) Duct Detector Test Switch\u003c\/h2\u003e\u003cdiv class=\"ths-mfr-data\"\u003e\n\u003cp\u003eThe Duct-Detector Test Switch (Model TSM-1) is a key-activated device that tests detectors for proper, consistent functionality. Each Mod el TSM-1 switch is compatible with Siemens — Fire Safety intelligent fire, smoke and duct detectors used on FireFinder XLS \/ XLSV, MXL and MXLV fire alarm control\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with all Siemens — Fire Safety\u003c\/li\u003e\n\u003cli\u003eParallel functionality with a single Siemens Model\u003c\/li\u003e\n\u003cli\u003eUses a light-emitting diode (LED) to indicate\u003c\/li\u003e\n\u003cli\u003eMounts in single-gang back box\u003c\/li\u003e\n\u003cli\u003eT-45 key operated\u003c\/li\u003e\n\u003cli\u003eTest Switch Assembly —\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cache.industry.siemens.com\/dl\/files\/577\/109787577\/att_1044331\/v2\/A6V10238843.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTSM-1 Duct Detector Test Switch for FireFinder panels, Data Sheet\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/support.industry.siemens.com\/cs\/attachments\/109787872\/A6V10260325.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTSM-1 Test Switch Module, Installation Instructions\u003c\/a\u003e (Installation Sheet)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":43132885663968,"sku":"TSM-1","price":127.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/siemens-duct-detectors-default-title-siemens-tsm-1-500-696353-duct-detector-test-switch-31896978227424.jpg?v=1763277970"},{"product_id":"simplex-565-653-pca-duct-sensor","title":"Simplex 565-653 Duct PCA Circuit Board Assembly","description":"\u003cp\u003e\u003cstrong\u003eSimplex 565-653\u003c\/strong\u003e — a Simplex 565-series printed circuit board assembly (PCA) for 4098 TrueAlarm duct sensor housings.\u003c\/p\u003e\u003cp\u003ePCA means printed circuit assembly: this is a board, not a sensing head, so it does not replace a detector. The duct attribution comes from distributor price-book listings, not a published Simplex document, and no parts list reviewed here names 565-653. Match the number printed on the board being replaced.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSimplex 565- numbers are grouped under BOARDS in the 4020 parts list 574-756 Rev. A\u003c\/li\u003e\n\u003cli\u003eAdjacent numbers are panel network hardware: 565-649 Network Interface Card, 565-650 Physical Bridge Board\u003c\/li\u003e\n\u003cli\u003eIn the 4098 duct family the sensing head is separate: the 4098-9714 TrueAlarm sensor\u003c\/li\u003e\n\u003cli\u003e4098-9755 is the duct sensor housing with no relay output, powered from IDNet or MAPNET II\u003c\/li\u003e\n\u003cli\u003e4098-9756 adds a supervised output for remote relays, needs separate 24 VDC, includes one relay\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSimplex duct electronics split by function rather than into one board: the earlier CDT parts list separated an interface board (565-124 with relay, 565-143 without) from a base board (565-131, or 565-144 without). Match 565-653 to the board already fitted.\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43133015490784,"sku":"565-653","price":60.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-sensors-default-title-simplex-565-653-pca-duct-sensor-31897132925152.jpg?v=1763277179"},{"product_id":"potter-pad-200-dd-analog-addressable-duct-detector","title":"Potter PAD200-DD Photoelectric Duct Smoke Detector Head for PAD200-DUCT and PAD200-DUCTR","description":"\u003cp\u003e\u003cstrong\u003ePotter PAD200-DD\u003c\/strong\u003e — the photoelectric duct smoke detector head fitted inside a Potter PAD200-DUCT or PAD200-DUCTR housing.\u003c\/p\u003e\u003cp\u003eThis is the sensing head, not a complete duct detector. Potter names it in both duct data sheets as the Detector Head Model, and each engineering specification requires a detector base and a PAD200-DD head in the housing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDetector head type: photoelectric, with a self-diagnostic sensitivity test method\u003c\/li\u003e\n\u003cli\u003eFixed alarm set point of 2.5%\/ft. in the duct assemblies it is listed in\u003c\/li\u003e\n\u003cli\u003eHost assemblies run at 24 VDC and draw 300 µA (PAD200-DUCT) or 500 µA (PAD200-DUCTR)\u003c\/li\u003e\n\u003cli\u003eListed air velocity 100 to 4,000 ft.\/min., 32 °F to 120 °F\u003c\/li\u003e\n\u003cli\u003ePotter IPA and AFC\/ARC addressable panels, addressed 1 to 127 by a seven-position dip switch\u003c\/li\u003e\n\u003cli\u003eHousings are UL 268A listed and UUKL listed for smoke control, SLC Class A, X and B\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOrder the right thing: PAD200-DUCT (stock 3992792) is the complete duct detector and PAD200-DUCTR (3992793) adds one Form C relay rated 8 A at 30 VDC and 10 A at 120 or 250 VAC. Sampling tubes are never included; STN-2.5, STN-5 and STN-10 are separate numbers chosen by duct width.\u003c\/p\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":43492977737952,"sku":"PAD200-DD","price":78.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/potter-duct-detectors-default-title-potter-pad-200-dd-analog-addressable-duct-detector-35999170167008.jpg?v=1763281193"},{"product_id":"potter-pad200-ductr-addressable-duct-detector","title":"Potter PAD200-DUCTR Analog Addressable Duct Smoke Detector with Form C Relay","description":"\u003cp\u003e\u003cstrong\u003ePotter PAD200-DUCTR\u003c\/strong\u003e — analog addressable duct smoke detector, supplied complete with housing and a PAD200-DD photoelectric head, and carrying one form C relay.\u003c\/p\u003e\u003cp\u003eTwo tubes protruding into the duct sample the air moving through it, and mounting uses a template and two screws without removing the clear cover. The \u003cstrong\u003eR\u003c\/strong\u003e is the relay, not a mounting or protocol variant: Potter lists the unit as an Analog Addressable Duct Detector W\/Relay.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e24 VDC, 500 µA draw; the relay-less PAD200-DUCT draws 300 µA\u003c\/li\u003e\n\u003cli\u003eRelay contacts rated 8 A at 30 VDC, 10 A at 120 VAC and 10 A at 250 VAC\u003c\/li\u003e\n\u003cli\u003ePhotoelectric head fixed at 2.5%\/ft; listed air velocity 100 to 4,000 ft.\/min.\u003c\/li\u003e\n\u003cli\u003e32 to 120 °F, 10% to 85% RH non-condensing; 13 1\/2 in. L × 4 1\/2 in. W × 2 1\/4 in. H, 2 lb\u003c\/li\u003e\n\u003cli\u003eSLC Class A, X and B; cover tamper switch; UL 268A and UUKL listed for smoke control\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe 7 in. exhaust tube ships in the kit; intake sampling tubes are ordered separately once duct width is known — \u003cstrong\u003eSTN-2.5\u003c\/strong\u003e, \u003cstrong\u003eSTN-5\u003c\/strong\u003e, \u003cstrong\u003eSTN-10\u003c\/strong\u003e. \u003cstrong\u003ePAD200-DD\u003c\/strong\u003e is the bare head alone, no housing or base. Supervised accessories: \u003cstrong\u003ePAD100-DRTS\u003c\/strong\u003e, \u003cstrong\u003eMS-RA\u003c\/strong\u003e, \u003cstrong\u003eMS-KA\/R\u003c\/strong\u003e, \u003cstrong\u003eMS-KA\/P\/R\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":43601834639584,"sku":"PAD200-DUCTR","price":279.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/potter-duct-detectors-default-title-potter-pad200-ductr-addressable-duct-detector-31896919539936.jpg?v=1763281315"},{"product_id":"edwards-6263-sg-air-velocity-test-kit","title":"Edwards 6263-SG Air Velocity Test Kit","description":"\u003ch2\u003eEdwards 6263-SG Air Velocity Test Kit - For Signature Series Duct Housing.\u003c\/h2\u003e\n\u003cp\u003eIncludes Air Velocity Meter, Psychrometer And Test Fixture for Measurement of Velocity of Duct Air Flow And Relative Humidity.\u003c\/p\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":43766680551648,"sku":"6263-SG","price":621.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/edwards-fire-alarms-default-title-edwards-6263-sg-air-velocity-test-kit-31896719261920.jpg?v=1763281918"},{"product_id":"edwards-esd-cj","title":"Edwards ESD-CJ SuperDuct Controller (RJ45) 4-wire","description":"\u003cp\u003e\u003cstrong\u003eEdwards ESD-CJ\u003c\/strong\u003e — SuperDuct four-wire duct smoke detector controller with RJ-45 modular connectors. This is the controller only, not a sensor.\u003c\/p\u003e\u003cp\u003eIn SuperDuct the sensor sits in the duct while the controller holds the relays, status LEDs and line-voltage supply. It will not operate without at least one compatible sensor, and the ESD-CJ pairs only with the ESD-SJ; a working detector also needs a sampling tube sized to the duct. The RJ-45 harness to the sensor may not exceed 15 ft.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOne normally open alarm initiation contact, 2.0 A at 30 Vdc resistive\u003c\/li\u003e\n\u003cli\u003eTwo Form C auxiliary relays, 10 A at 30 Vdc \/ 250 Vac, for HVAC shutdown\u003c\/li\u003e\n\u003cli\u003eOne Form C supervision relay, 2.0 A at 30 Vdc; aux output 18 Vdc, 30 mA\u003c\/li\u003e\n\u003cli\u003e20 to 29 Vdc, or 24 V, 120 V or 220\/240 V at 50\/60 Hz; serves one or two sensors\u003c\/li\u003e\n\u003cli\u003eAt 24 Vdc: 77.9 mA standby, 124.3 mA alarm; -4°F to 158°F; 6.75 × 5.45 × 1.90 in.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eMatch the letters: TSD-CJ and SD-CJ take TSD-SJ and SD-SJ sensors, ESD-CT is the terminal-block version, ESD-4WJ is controller and sensor in one.\u003c\/p\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":43766686351584,"sku":"ESD-CJ","price":132.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/edwards-duct-detectors-default-title-edwards-esd-cj-31896737153248.jpg?v=1763281995"},{"product_id":"edwards-esd-st-superduct-sensor","title":"Edwards ESD-ST Superduct Sensor","description":"\u003ch2\u003eEdwards ESD-ST Superduct Sensor (Terminals), 4-Wire\u003c\/h2\u003e\u003cdiv class=\"ths-mfr-data\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLess than 2\" deep for easy installation\u003c\/li\u003e\n\u003cli\u003ePCB mounted photoelectric detector with on-board intelligence\u003c\/li\u003e\n\u003cli\u003eEnvironmental compensation with patented differential sensing\u003c\/li\u003e\n\u003cli\u003e4°F to 158°F (-20°C to 70°C) operating range\u003c\/li\u003e\n\u003cli\u003e100 ft\/min. to 4,000 ft\/min air velocity rating\u003c\/li\u003e\n\u003cli\u003eStandard RJ45 modular interconnection\u003c\/li\u003e\n\u003cli\u003eStatus LEDs remain visible through clear assembly cover\u003c\/li\u003e\n\u003cli\u003eCover tamper reed switch for added security\u003c\/li\u003e\n\u003cli\u003eStandard sampling tube and mounting holes\u003c\/li\u003e\n\u003cli\u003eInstall in tandem with the controller assembly, or remotely from it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/E85001-0583%20--%20Four-Wire%20SuperDuct%20Duct%20Smoke%20Detector.pdf\" target=\"_blank\" rel=\"noopener\"\u003eFour-Wire SuperDuct Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":43766686613728,"sku":"ESD-ST","price":91.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/edwards-duct-detectors-default-title-edwards-esd-st-superduct-sensor-31896737284320.jpg?v=1763281997"},{"product_id":"simplex-4098-9687-duct-detector","title":"Simplex 4098-9687 Duct Detector","description":"\u003cp\u003eThe Simplex 4098-9687 is a duct detector housing for HVAC ducts that must be monitored without a fire alarm control panel. It comes with a factory-installed 4098-9601 TrueAlarm photoelectric smoke detector. Its own relay can shut down fans or trigger other equipment when smoke is detected in the duct.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInput power of 120 VAC, 24 VAC or 24 VDC\u003c\/li\u003e\n\u003cli\u003eFail-safe Form C relay stays energized in normal operation and transfers on alarm, loss of power or detector removal\u003c\/li\u003e\n\u003cli\u003eClear cover lets you see the detector and its status LED, and test ports allow smoke testing with the cover in place\u003c\/li\u003e\n\u003cli\u003eMagnetic test starts an alarm and shows the detector's dirt accumulation status\u003c\/li\u003e\n\u003cli\u003eTrueAlarm sensitivity drift compensation\u003c\/li\u003e\n\u003cli\u003eMounts to rectangular or round ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Simplex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 4098-9687\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Stand-alone duct smoke detector housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetector:\u003c\/strong\u003e 4098-9601 TrueAlarm photoelectric (factory installed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Power:\u003c\/strong\u003e 120 VAC, 24 VAC or 24 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Contacts:\u003c\/strong\u003e Form C, 5 A at 120 VAC or 28 VDC, resistive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Duct Size:\u003c\/strong\u003e 8 in (203 mm) square or 18 in (457 mm) diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListings:\u003c\/strong\u003e UL 268A; CSFM 3240-0026:241\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eRequires the 4098-9842 control station, ordered separately. It provides a green power LED, a red alarm LED, a tone-alert with silence switch and a keyed test\/reset switch. A sampling tube sized to the duct width (4098-9854 through 4098-9858) is also ordered separately. Duct detection supplements area smoke detection but does not replace it.\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43777819377888,"sku":"4098-9687","price":234.3,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-4098-9687-duct-detector-31897051070688.jpg?v=1763282683"},{"product_id":"simplex-4098-9688-duct-detector","title":"Simplex 4098-9688 Duct Detector","description":"\u003ch2\u003eSimplex 4098-9688 Duct Detector Housing, 2-W, W\/Relay Dr\u003c\/h2\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43777819410656,"sku":"4098-9688","price":241.35,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-4098-9688-duct-detector-31897049792736.jpg?v=1763282686"},{"product_id":"simplex-4098-9750-ssd-in-duct-sensor","title":"Simplex 4098-9750 SSD In-Duct Sensor","description":"\u003cp\u003e\u003cstrong\u003eSimplex 4098-9750\u003c\/strong\u003e — TrueAlarm in-duct sensor housing, without relay.\u003c\/p\u003e\u003cp\u003eDuct detection samples the air moving through an HVAC system so smoke can be detected in the airstream and the fans shut down before the system distributes it through the building. The housing carries the sampling tubes that draw conditioned air across the sensor head and return it to the duct.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIn-duct housing for TrueAlarm analog sensors, per NFPA 72 and NFPA 90A duct detector requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo relay\u003c\/strong\u003e — specify the 4098-9751 where a relay is required in the housing\u003c\/li\u003e\n\u003cli\u003eAssembly includes sensor base assembly, mounting box and cover, and mounting gaskets\u003c\/li\u003e\n\u003cli\u003eUL air velocity rating 35 to 2,000 ft\/min (10.7 to 610 m\/min)\u003c\/li\u003e\n\u003cli\u003eCompatible with Simplex 4100ES, 4010ES, 4100U, 4010, 4020, 4100, 4120 and 2120 CDT panels configured for MAPNET II \/ TrueAlarm communications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eThe sensor head is ordered separately\u003c\/strong\u003e — the 4098-9714 smoke sensor is the usual companion. Sampling tube length must suit the duct width; check it against the duct dimensions before installation.\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43777819508960,"sku":"4098-9750","price":154.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-4098-9750-ssd-in-duct-sensor-31897050710240.jpg?v=1763282675"},{"product_id":"simplex-4098-9756-4-wire-duct-detector","title":"Simplex 4098-9756 TrueAlarm Addressable Duct Sensor Housing with Photo Sensor and Relay, Separate 24 VDC","description":"\u003cp\u003e\u003cstrong\u003eSimplex 4098-9756\u003c\/strong\u003e — a TrueAlarm addressable duct smoke sensor housing with a supervised multiple-relay control output, supplied with a factory-installed 4098-9714 photoelectric sensor.\u003c\/p\u003e\n\u003cp\u003eThe 4098-9756 monitors an HVAC duct for smoke. A sampling tube crossing the duct directs air through the housing to the internal photoelectric sensor, and the exhaust tube returns it. Analog sensor values are transmitted digitally to the fire alarm control unit over IDNet or MAPNET II, where they are tracked against a running average so that dust and component aging are compensated rather than mistaken for smoke. What separates this model from the basic 4098-9755 is the relay output: it drives up to fifteen 4098-9843 Form C relays under panel control — on, off, or override — so fan shutdown and damper control can be commanded manually from the panel or in response to any other system input. That output is supervised, and it is the reason this housing needs a separate fused 24 VDC supply from the fire alarm power supply in addition to the communications pair. The housing includes the 4098-9714 sensor, the exhaust tube and one 4098-9843 relay; the sampling tube is ordered separately to match the duct width.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDevice type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAddressable duct sensor housing with supervised multiple relay output; includes internally mounted 4098-9714 TrueAlarm photoelectric sensor and exhaust tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData communications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIDNet or MAPNET II, auto-select, one address per housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelay control input voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18 to 32 VDC (24 VDC nominal), separate fused 24 VDC from the fire alarm power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandby current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 mA at 24 VDC, plus 15 mA for each 4098-9843 relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupervised remote relay output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4098-9843 relays only, 15 maximum; 500 ft (152 m) maximum; requires 4081-9008 10 k\u0026amp;ohm;, 1\/2 W end-of-line resistor harness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e4098-9843 relay contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle Form C, 7 A at 0.35 PF at 28 VDC and 120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e4098-9843 coil current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor sensitivity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2% to 3.7% per foot of obscuration, selectable and monitored at the host control panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir velocity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 to 4,000 ft\/min (91 to 1,220 m\/min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure differential\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.015 to 1.55 in. of water (0.381 to 39.37 mm) between intake and exhaust tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUL listed temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32°F to 100°F (0°C to 38°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32°F to 122°F (0°C to 50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage temperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°F to 140°F (-18°C to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10% to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTerminal blocks, 18 to 12 AWG (0.82 mm² to 3.31 mm²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack ABS base with clear polycarbonate cover; sampling and exhaust tubes are black CPVC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum duct size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 in. (203 mm) square, or 18 in. (457 mm) diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiagnostic LEDs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed alarm\/trouble LED for sensor status and polling; yellow LED for open or shorted supervised relay control trouble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRemote indicator distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 ft (76 m) maximum; remote alarm LED 1.2 mA, test station keyswitch 3.3 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible control units\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4007ES, 4008, 4010, 4010ES, 4020, 4100, 4100ES, 4100E and 4120. The 2120 CDT is supported for TrueAlarm operation on MAPNET II, but the relay operation is not compatible with the 2120 CDT.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eListings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL listed to Standard 268A; ULC listed; FM approved; CSFM Listing 3240-0026.241; MEA (NYC) acceptance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate 24 VDC is mandatory:\u003c\/strong\u003e unlike the 4098-9755, this housing cannot run on communications power alone. The relay control section needs a separate fused 24 VDC feed from the fire alarm power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd-of-line harness required:\u003c\/strong\u003e the 4081-9008 10 k\u0026amp;ohm;, 1\/2 W end-of-line resistor harness must be fitted at the last relay location to supervise the remote relay coil connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tube ordered separately:\u003c\/strong\u003e select by overall duct width — 4098-9854 up to 12 in., 4098-9855 for 13 to 23 in., 4098-9856 for 24 to 46 in., 4098-9857 for 46 to 71 in., 4098-9858 for 71 to 95 in. Cut the two smaller tubes 1\/2 in. longer than the duct width and the three larger tubes 3 in. longer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e mount the housing at 90° to airflow and do not mount it on the bottom of the duct. Where sampling tubes are not vertical, FDI testing recommends positioning them horizontally in the upper half of the duct to allow for stratification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow limits are a design constraint:\u003c\/strong\u003e the location must deliver 300 to 4,000 ft\/min and a 0.015 to 1.55 in. water pressure differential, or the housing will not sample correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere to place it:\u003c\/strong\u003e downstream of filters to catch filter fires, in return ducts ahead of mixing areas, and upstream of humidifiers and cooling coils. Avoid outside air inlets, return air damper branch ducts and mixing areas, and any point where comfort-control dampers closing would interfere with airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay placement:\u003c\/strong\u003e locate each 4098-9843 within 3 ft (1 m) of the device it controls, per NFPA 72, in its own electrical box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuct detection is supplementary:\u003c\/strong\u003e Johnson Controls states that duct smoke detection is intended to signal smoke in the duct and does not replace open-area smoke detection requirements, and that it must never be regarded as a substitute for the building fire alarm and detection system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e the clear cover allows visual inspection, two test ports permit airflow measurement and aerosol injection with the cover in place, and a magnetic test area initiates an alarm at the housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated models\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4098-9755\u003c\/strong\u003e — the basic duct sensor housing, powered entirely by IDNet\/MAPNET II communications with no relay output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4098-9843\u003c\/strong\u003e — additional epoxy-encapsulated Form C remote relay; one is included, up to 15 total\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4081-9008\u003c\/strong\u003e — the 10 k\u0026amp;ohm; end-of-line resistor harness required to supervise the relay coil connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2098-9806 \/ 2098-9808\u003c\/strong\u003e — remote test station with keyswitch and status LED, or remote red status\/alarm LED, on a single-gang stainless steel plate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4098-9845\u003c\/strong\u003e — NEMA 4X weatherproof enclosure for duct housings exposed to the weather (data sheet S4098-0032)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThe 4098-9756 works with 4007ES, 4008, 4010, 4010ES, 4020, 4100, 4100ES, 4100E and 4120 control units. The relay operation is not compatible with the 2120 CDT. The basic \u003ca href=\"\/products\/simplex-4098-9755-2-wire-duct-detector\"\u003e4098-9755\u003c\/a\u003e housing has no relay output and needs no separate 24 VDC feed.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDoes the Simplex 4098-9756 need separate power?\u003c\/strong\u003e\u003cbr\u003eYes. The relay control section needs a separate fused 24 VDC supply in addition to the IDNet or MAPNET II communications pair.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the sampling tube included?\u003c\/strong\u003e\u003cbr\u003eNo. The sampling tube is ordered separately to match the duct width.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSpecifications taken from the Simplex data sheet \"TrueAlarm Analog Sensing — Addressable Duct Sensor Housings with TrueAlarm Photoelectric Sensor; Available with Multiple Relay Control,\" document S4098-0030-10 (11\/2014). Manufacturer specifications are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"Simplex","offers":[{"title":"Default Title","offer_id":43777819541728,"sku":"4098-9756","price":176.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/simplex-duct-detectors-default-title-simplex-4098-9756-4-wire-duct-detector-31912665776352.jpg?v=1763282693"},{"product_id":"edwards-esd-4wj-superduct-controller-w-sensor","title":"Edwards ESD-4WJ Superduct, Controller W\/Sensor","description":"\u003ch2\u003eEdwards ESD-4WJ Superduct, Controller W\/Sensor (Rj45), 4-Wire\u003c\/h2\u003e\u003cdiv class=\"ths-mfr-data\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLess than 2\" deep for easy installation\u003c\/li\u003e\n\u003cli\u003ePCB mounted photoelectric detector with on-board intelligence\u003c\/li\u003e\n\u003cli\u003eEnvironmental compensation with patented differential sensing\u003c\/li\u003e\n\u003cli\u003e4°F to 158°F (-20°C to 70°C) operating range\u003c\/li\u003e\n\u003cli\u003e100 ft\/min. to 4,000 ft\/min air velocity rating\u003c\/li\u003e\n\u003cli\u003eStandard RJ45 modular interconnection\u003c\/li\u003e\n\u003cli\u003eStatus LEDs remain visible through clear assembly cover\u003c\/li\u003e\n\u003cli\u003eCover tamper reed switch for added security\u003c\/li\u003e\n\u003cli\u003eStandard sampling tube and mounting holes\u003c\/li\u003e\n\u003cli\u003eInstall in tandem with the controller assembly, or remotely from it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/E85001-0583%20--%20Four-Wire%20SuperDuct%20Duct%20Smoke%20Detector.pdf\" target=\"_blank\" rel=\"noopener\"\u003eFour-Wire SuperDuct Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":43777855586528,"sku":"ESD-4WJ","price":257.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/edwards-fire-alarms-default-title-edwards-esd-4wj-superduct-controller-w-sensor-37788675080416.webp?v=1763283110"},{"product_id":"edwards-siga-dts-duct-smoke-detector-test-station","title":"Edwards SIGA-DTS Signature Duct Test Station, Key Switch with Integral Input Module, 2-Gang","description":"\u003cp\u003e\u003cstrong\u003eEdwards SIGA-DTS\u003c\/strong\u003e — Signature Series duct test station: a key switch with an integral intelligent input module on a two-gang plate, supplied with two keys.\u003c\/p\u003e\u003cp\u003eDuct detectors sit on ductwork, out of reach above a ceiling. Turning this key to TEST lights the station LED and makes the integral module report a duct detector test alarm, so the damper and smoke control sequences programmed at the panel are exercised too. Resetting the panel clears the test, and the key cannot be withdrawn in the TEST position.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStandby current 250 µA; activated 400 µA\u003c\/li\u003e\n\u003cli\u003e15.2 to 19.95 Vdc, 19 Vdc nominal\u003c\/li\u003e\n\u003cli\u003eOccupies one module address on the Signature loop\u003c\/li\u003e\n\u003cli\u003eRelay bases are not automatically operated; the panel may be programmed to do so\u003c\/li\u003e\n\u003cli\u003eMounts to a 2 in. deep two-gang or 4 in. square box, ordered separately\u003c\/li\u003e\n\u003cli\u003eWhite engineered plastic front plate; replacement key P-037449\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEdwards documents it only with the SIGA-SDH and SIGA-SDHR housings. SuperDuct and Optica duct detectors take one-gang stations instead, SD-TRK keyed or SD-TRM magnetic. SIGA-LED is a remote alarm indicator with no test function.\u003c\/p\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":43777870168288,"sku":"SIGA-DTS","price":121.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/edwards-duct-detectors-default-title-edwards-siga-dts-duct-smoke-detector-test-station-31896771625184.jpg?v=1763283290"},{"product_id":"edwards-siga-sd-duct-smoke-detector","title":"Edwards SIGA-SD Duct Smoke Detector","description":"\u003cp\u003e\u003cstrong\u003eEdwards SIGA-SD\u003c\/strong\u003e (also searched as SIGA SD) is an intelligent SuperDuct Signature Series duct smoke detector that samples HVAC airflow and reports as an addressable device on a Signature loop.\u003c\/p\u003e\u003cp\u003eA Signature Series photoelectric sensor is built into every SIGA-SD. It compares analog readings from the smoke sensing elements against historical readings and time patterns to make an alarm decision, and digital filters remove signal patterns that are not typical of fires. Differential sensing keeps gradual environmental change from triggering unwanted alarms: a rapid change such as smoke causes an alarm, while dust accumulating over time does not shift alarm sensitivity. Air enters the sensing chamber through a sampling tube that extends into the duct and returns through an exhaust tube. The assembly is less than 2 in deep, uses removable dust filters and conformally coated circuit boards, and comes apart for cleaning. The exhaust tube is included; the sampling tube is a separate order sized to the duct.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhotoelectric (light scattering)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.79 to 2.46 %\/ft obscuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir pressure differential\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.005 to 1.00 inches of water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15.2 to 19.95 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandby 45 µA; alarm 45 µA; standalone alarm 18 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon alarm relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOne Form C, 2.0 A at 30 VDC (resistive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature (UL)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 to 158°F (-29 to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10% to 93%, noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.70 x 5.45 x 1.90 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14 to 22 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShip weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.4 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL, ULC, CSFM, FM, MEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eInstallation notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling tube ordered separately:\u003c\/strong\u003e size it to the duct from the SD-T8, SD-T18, SD-T24, SD-T36, SD-T42, SD-T60, SD-T78 or SD-T120 range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube orientation:\u003c\/strong\u003e install sampling tubes with the inlet holes facing the airstream; they rotate in 45-degree increments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the duct first:\u003c\/strong\u003e Edwards directs that duct air velocity, temperature and humidity be tested before installation. The SD-VTK air velocity test kit is made for this.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne remote device only:\u003c\/strong\u003e connect no more than one remote test station or LED indicator, with a maximum of 10 ohms per wire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh humidity:\u003c\/strong\u003e use the SD-PH protective housing to prevent condensation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimits:\u003c\/strong\u003e a duct detector is not a substitute for open-area smoke detection or for a building's regular fire detection system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated models\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSD-TRM and SD-TRK: remote test\/reset stations, magnet or key operated\u003c\/li\u003e\n\u003cli\u003eSIGA-LED: remote alarm LED\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/edwards-siga-sdpcb-superduct-replacement-pcb-signature-sensor-kit\"\u003eSIGA-SDPCB\u003c\/a\u003e: replacement PCB and Signature sensor kit for an installed SuperDuct housing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSpecifications are taken from the Edwards data sheet E85001-0584. Manufacturer specifications are subject to change without notice.\u003c\/p\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":43777870758112,"sku":"SIGA-SD","price":221.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/edwards-duct-detectors-default-title-edwards-siga-sd-duct-smoke-detector-31896781750496.jpg?v=1763283312"},{"product_id":"edwards-siga-sdpcb-superduct-replacement-pcb-signature-sensor-kit","title":"Edwards SIGA-SDPCB Superduct, Replacement PCB Signature Sensor Kit","description":"\u003ch2\u003eEdwards SIGA-SDPCB Superduct, Replacement PCB Signature Sensor Kit\u003c\/h2\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":43777870790880,"sku":"SIGA-SDPCB","price":166.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/edwards-fire-alarms-default-title-edwards-siga-sdpcb-superduct-replacement-pcb-signature-sensor-kit-38518948397280.webp?v=1763283323"},{"product_id":"system-sensor-d2-innovairflex-2-wire-conventional-photo-duct-detector","title":"System Sensor D2 Innovairflex 2-Wire Conventional Photo Duct Detector","description":"\u003cp\u003eHVAC systems can carry smoke through a building, and the System Sensor D2 InnovairFlex 2-wire conventional photoelectric duct detector is designed to catch it inside the ductwork. This unit includes the 2151 photoelectric detector head. Its pivoting housing mounts in a square or rectangular footprint on round or rectangular ducts.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes the 2151 photoelectric detector head\u003c\/li\u003e\n\u003cli\u003eIntegrated low-flow technology rated for air velocities of 100 to 4,000 ft\/min\u003c\/li\u003e\n\u003cli\u003ePatented sampling tube installs from the front or back without tools\u003c\/li\u003e\n\u003cli\u003eCover tamper feature signals trouble if the sensor cover is removed or not installed correctly\u003c\/li\u003e\n\u003cli\u003eAdded ¾-inch conduit knockout for more wiring space\u003c\/li\u003e\n\u003cli\u003eLocal magnetic test or remote testing with a compatible remote test station\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e System Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e D2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 2-wire conventional photoelectric duct smoke detector (InnovairFlex)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply Voltage:\u003c\/strong\u003e 8.5–35 VDC (24 VDC nominal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby Current:\u003c\/strong\u003e 60 µA max. average\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Current:\u003c\/strong\u003e 130 mA max.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Duct Velocity:\u003c\/strong\u003e 100 to 4,000 ft\/min (0.5 to 20.32 m\/sec)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -4°F to 158°F (-20°C to 70°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 0% to 95% RH, non-condensing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e Rectangular: 14.38 x 5 x 2.5 in.; Square: 7.75 x 9 x 2.5 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Size:\u003c\/strong\u003e 12–18 AWG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListing:\u003c\/strong\u003e Housing UL listed to UL 268A for use in air handling systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eConnects to UL\/FM listed compatible 2-wire control panel initiating circuits and is backward compatible with existing Innovair products, including remote accessories such as the RA100Z remote alarm LED.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43976665628896,"sku":"D2","price":212.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/system-sensor-duct-detectors-default-title-system-sensor-d2-innovairflex-2-wire-conventional-photo-duct-detector-31897169297632.jpg?v=1763283668"},{"product_id":"silent-knight-sk-duct-w-intelligent-photoelectric-duct-smoke-detector","title":"Silent Knight SK-DUCT-W Intelligent Photoelectric Duct Smoke Detector","description":"\u003ch2\u003eSilent Knight SK-DUCT-W Intelligent Photoelectric Duct Smoke Detector\u003c\/h2\u003e\u003cp\u003eThe Silent Knight SK-DUCT-W is an intelligent photoelectric duct smoke detector supplied with its smoke detector housing and the SK-PHOTO-R-W detector. The SK-DUCT-W and DNRW use photoelectric technology to detect smoke and combustion particles present in air moving through an HVAC air handling system.\u003c\/p\u003e\u003cp\u003eThese units sense smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet per minute (0.5 to 20.32 m\/s), temperatures of -4°F to 158°F (-20°C to 70°C) and a humidity range of 0 to 93 percent, non-condensing.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePhotoelectric, integrated low-flow technology\u003c\/li\u003e\n\u003cli\u003eAir velocity rating from 100 ft\/min to 4,000 ft\/min (0.5 m\/s to 20.32 m\/s)\u003c\/li\u003e\n\u003cli\u003eVersatile mounting options: square or rectangular configuration\u003c\/li\u003e\n\u003cli\u003eBroad operating ranges: -4°F to 158°F (-20°C to 70°C) and 0% to 93% humidity, non-condensing\u003c\/li\u003e\n\u003cli\u003eSampling tube installs from the front or back of the detector with no tools required\u003c\/li\u003e\n\u003cli\u003eCover tamper signal\u003c\/li\u003e\n\u003cli\u003eIncreased wiring space with a newly added 3\/4\" conduit knockout\u003c\/li\u003e\n\u003cli\u003eEasily accessible code wheels on the sensor head (included with SK-DUCT-W)\u003c\/li\u003e\n\u003cli\u003eClear cover for convenient visual inspection (SK-DUCT-W only)\u003c\/li\u003e\n\u003cli\u003eRemote testing capability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSK-DUCT-W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhotoelectric, integrated low-flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSK-PHOTO-R-W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft\/min (0.5 to 20.32 m\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-4°F to 158°F (-20°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0% to 93%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eRelated models\u003c\/h3\u003e\u003cp\u003eThe \u003ca href=\"\/products\/silent-knight-sk-duct\"\u003eSilent Knight SK-DUCT\u003c\/a\u003e is the related intelligent duct detector supplied with the SK-PHOTOR detector.\u003c\/p\u003e\u003ch3\u003eQuestions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat airflow range does the SK-DUCT-W cover?\u003c\/strong\u003e 100 to 4,000 feet per minute (0.5 to 20.32 m\/s).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it have a cover tamper signal?\u003c\/strong\u003e Yes, and it also offers remote testing capability.\u003c\/p\u003e","brand":"Silent Knight","offers":[{"title":"Default Title","offer_id":44058642284768,"sku":"SK-DUCT-W","price":265.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/silent-knight-duct-detectors-default-title-silent-knight-sk-duct-w-intelligent-photoelectric-duct-smoke-detector-32276215103712.jpg?v=1763283687"},{"product_id":"potter-pad300-duct-addressable-duct-detector-1","title":"Potter PAD300-DUCT Addressable Duct Detector","description":"\u003ch2\u003ePotter PAD300-DUCT Analog Addressable Duct Detector\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe PAD300-DUCT is designed and built to meet all local requirements, as well as the NFPA regulations regarding duct smoke detectors. Air sampling is accomplished by two (2) tubes which protrude into the duct.\u003c\/p\u003e\n\u003cp\u003eAn exhaust tube of one standard length (7”) is supplied in the installation kit with the smoke duct unit. Once the duct width has been determined the air intake, sampling tubes must be ordered. Sampling tubes are supplied in three standard lengths: 2.5 ft., 5 ft., and 10 ft. and cut to size to fit the duct.\u003c\/p\u003e\n\u003cp\u003eMounting the duct smoke unit is accomplished by the use of a template and two (2) sheet metal screws, which are provided. Mounting can be achieved without the removal of the clear cover which is secured by four (4) capture screws.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDetects Smoke in Building HVAC Ducts\u003c\/li\u003e\n\u003cli\u003eShips Complete with Housing and Head\u003c\/li\u003e\n\u003cli\u003eCompatible with Addressable IPA and AFC\/ARC Series Panels\u003c\/li\u003e\n\u003cli\u003eSLC In-and-out Wire Terminals\u003c\/li\u003e\n\u003cli\u003eSLC Class A, Class X \u0026amp; Class B\u003c\/li\u003e\n\u003cli\u003eInstallation Without Removing the Head\u003c\/li\u003e\n\u003cli\u003eListed Air Velocity of 100 to 4,000 ft\/minute\u003c\/li\u003e\n\u003cli\u003eNo Screens or Filters in Housing\u003c\/li\u003e\n\u003cli\u003eDurable Plastic Enclosure and Clear Cover\u003c\/li\u003e\n\u003cli\u003eIntegrated Cover Tamper Switch\u003c\/li\u003e\n\u003cli\u003eUUKL Listed for Smoke Control\u003c\/li\u003e\n\u003cli\u003eUtilizes Simple Snap in Sampling Tubes STN Series\u003c\/li\u003e\n\u003cli\u003eProduct includes 5-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":44264463433952,"sku":"PAD300-DUCT","price":167.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/potter-duct-detectors-default-title-potter-pad300-duct-addressable-duct-detector-32223434146016.jpg?v=1763284366"},{"product_id":"fire-lite-d365pl-duct-detector-replaces-d355pl","title":"Fire-Lite D365PL Duct Detector (Replaces D355PL)","description":"\u003ch2\u003eFire-Lite D365PL Intelligent Non-Relay Photoelectric Low Flow Duct Smoke Detector (Replaces D355PL)\u003c\/h2\u003e\n\u003cp\u003eThe Fire-Lite D365PL is an intelligent non-relay photoelectric low flow smoke detector housing. It replaces the D355PL and includes the SD365R-IV detector.\u003c\/p\u003e\n\u003cp\u003eThe D365PL and the DNRW watertight non-relay duct smoke detector use a pivoting housing that fits both square and rectangular footprints and mounts to a round or rectangular duct. The DNRW has a NEMA-4 rating and is listed as a watertight, UV resistant enclosure. These units sense smoke at airflow speeds of 100 to 4,000 feet per minute (0.5 to 20.32 m\/s). An improved cover design isolates the sensor head for easier maintenance, and a cover tamper feature signals a removed or improperly installed sensor cover. The housing has a 3\/4-inch conduit knockout and space for a relay module. The D365PL(A) can be customized to local codes without additional wiring and is compatible with all previous models, including remote test accessories.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePhotoelectric, integrated low-flow technology\u003c\/li\u003e\n\u003cli\u003eAir velocity rating 100 to 4,000 ft\/min (0.5 to 20.32 m\/s)\u003c\/li\u003e\n\u003cli\u003eSquare or rectangular mounting configuration\u003c\/li\u003e\n\u003cli\u003eOperating temperature -4°F to 158°F (-20°C to 70°C); humidity 0% to 93% non-condensing\u003c\/li\u003e\n\u003cli\u003eSampling tube installs from the front or back with no tools\u003c\/li\u003e\n\u003cli\u003eCover tamper signal and clear cover for visual inspection (D365PL(A) only)\u003c\/li\u003e\n\u003cli\u003eCode wheels on the sensor head included with the D365PL\/D365PLA\u003c\/li\u003e\n\u003cli\u003eRemote testing capability; requires comm line power only\u003c\/li\u003e\n\u003cli\u003eHousing accommodates an addressable relay module, CRF-300 (sold separately), for applications needing a Form-C relay\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize (rectangle)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.38 in (37 cm) L x 5 in (12.7 cm) W x 2.5 in (6.6 cm) D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize (square)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.75 in (19.7 cm) L x 9 in (22.9 cm) W x 2.5 in (6.35 cm) D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6 lb (0.73 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-4°F to 158°F (-20°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-22°F to 158°F (-30°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0% to 93% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir duct velocity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 4,000 ft\/min (0.5 to 20.32 m\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eReplacement\u003c\/h3\u003e\u003cp\u003eThe D365PL replaces the \u003ca href=\"\/products\/fire-lite-d355pl-duct-smoke-detector-replaced-by-d365pl\"\u003eD355PL\u003c\/a\u003e. The included detector is the SD365R-IV; a replacement duct detector head is also available as the \u003ca href=\"\/products\/fire-lite-sd365r-iv-replacement-duct-smoke-detector-ivory\"\u003eSD365R-IV duct smoke detector\u003c\/a\u003e.\u003c\/p\u003e","brand":"Fire-Lite","offers":[{"title":"Default Title","offer_id":44744462008544,"sku":"D365PL","price":266.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/products\/fire-lite-duct-detectors-default-title-fire-lite-d365pl-duct-detector-replaces-d355pl-32336197583072.jpg?v=1763284714"},{"product_id":"edwards-gsa-dh-duct-detector-housing","title":"Kidde GSA-DH Intelligent Duct Smoke Detector Housing, Signature Series","description":"\u003cp\u003e\u003cstrong\u003eGSA-DH\u003c\/strong\u003e is the Kidde intelligent duct smoke detector housing for Signature Series detectors. It holds a standard Signature smoke detector and base, so no special duct head is needed. Air moving in the duct enters through the perforated inlet sampling tube, passes the detector, and leaves through the exhaust tube; the inlet must be upstream of the exhaust.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible detectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGSA-PS, GSA-PHS, GSA-IPHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir velocity range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 to 4,000 ft\/min (1.5 to 20.3 m\/s) with GSA-PS or GSA-PHS; 300 to 1,000 ft\/min (1.5 to 5.0 m\/s) with GSA-IPHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 in. (200 mm) minimum, up to 10 ft. (3.05 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7-3\/8 in. (188 mm) W x 7 in. (178 mm) H x 5 in. (127 mm) D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial and finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 gauge cold rolled steel, red baked enamel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConduit knockouts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCombination 1\/2 in. and 3\/4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e#18 to #12 AWG (0.75 to 2.5 mm²); #14 AWG not recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAddressing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUses one input device address\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eController\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSignature Loop Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgency approvals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL, ULC, MEA, CSFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot weatherproof or dust tight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.5 lb (3.0 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eCompatibility and installation notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSupplied with a 6 in. (150 mm) exhaust tube, gaskets, installation instructions and a self-adhesive drilling template.\u003c\/li\u003e\n\u003cli\u003eOrder separately: one detector (GSA-PS, GSA-PHS or GSA-IPHS), one base (\u003ca href=\"\/products\/kidde-gsa-sb\"\u003eGSA-SB\u003c\/a\u003e standard, GSA-RB relay or GSA-IB isolator), and one inlet sampling tube: 73681-1 (8 in.), 73681-2 (24 in.), 73681-3 (42 in.), 73681-6 (78 in.) or 73681-10 (120 in.).\u003c\/li\u003e\n\u003cli\u003eThe sampling tube must span the full duct width; tubes longer than 3 ft. (900 mm) must be supported at both ends.\u003c\/li\u003e\n\u003cli\u003eNeeds a clear, flat area on the duct of at least 7-3\/8 in. W x 7 in. H. Test duct air velocity before installing; duct humidity must be 0 to 93%.\u003c\/li\u003e\n\u003cli\u003eAccessories: GSA-LED remote alarm LED (with GSA-SB base only), GSA-DTS duct test station, \u003ca href=\"\/products\/edwards-6263-sg-air-velocity-test-kit\"\u003e6263-SG\u003c\/a\u003e air velocity test kit.\u003c\/li\u003e\n\u003cli\u003eDuct detectors are not a substitute for open area smoke detection.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDocuments\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/K85001-0325%20--%20Intelligent%20Duct%20Detector%20Housing.pdf\"\u003eKidde data sheet K85001-0325, Intelligent Duct Smoke Detector Housing GSA-DH (PDF)\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eSpecifications from Kidde data sheet K85001-0325, Intelligent Duct Detector Housing GSA-DH, Issue 1.1 (04-05-20). Manufacturer specifications are subject to change.\u003c\/em\u003e\u003c\/p\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":45547292000480,"sku":"GSA-DH","price":84.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/edwards-fire-alarms-default-title-edwards-gsa-dh-duct-detector-housing-33699508682976.jpg?v=1763284963"},{"product_id":"system-sensor-d4s-duct-smoke-detector","title":"System Sensor D4S InnovairFlex 4-Wire Photoelectric Duct Smoke Sensor Component, Requires D4120 or D4P120 Power Board","description":"\u003cp\u003e\u003cstrong\u003eSystem Sensor D4S\u003c\/strong\u003e — InnovairFlex 4-wire photoelectric duct smoke sensor component, supplied without a power board.\u003c\/p\u003e\u003cp\u003eInstallation instructions I56-2967-002R state that the D4120 duct detector consists of the D4P120 power board and the D4S sensor component. This is the sensing half only: four wiring terminals and no power board, so it carries none of the alarm initiation, auxiliary or supervisory relay contacts a complete detector provides, and cannot be used alone. It wires to the Sensor 2 terminals of a D4120 or D4P120, which then watches two sensors at once, typically supply and return side.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSensor component only; an accessory to the D4120 in the ordering table\u003c\/li\u003e\n\u003cli\u003eFootprint 7.75 x 5 x 2.5 in. (19.7 x 12.7 x 6.35 cm)\u003c\/li\u003e\n\u003cli\u003eOperating -4 to 158 °F; air velocity 100 to 4,000 ft\/min; 0 to 95 percent RH\u003c\/li\u003e\n\u003cli\u003eFour terminals with clamping plates, marked Tamper (Y,Y), +R and -B\u003c\/li\u003e\n\u003cli\u003eOne D4120 with one D4S, or one D4P120 with two D4S units\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe complete detector is the D4120; D4P120 is the power board alone and 2D51 the bare head. Sampling tubes DST1 to DST10 are marked sold separately and chosen by duct width.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":46202394935520,"sku":"D4S","price":138.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/system-sensor-duct-detectors-default-title-system-sensor-d4s-duct-smoke-detector-34518402826464.jpg?v=1793440610"},{"product_id":"system-sensor-ductsd","title":"System Sensor DUCTSD 4-Wire Duct Smoke Detector","description":"\u003cp\u003e\u003cstrong\u003eSystem Sensor DUCTSD\u003c\/strong\u003e — 4-wire photoelectric low-flow duct smoke detector.\u003c\/p\u003e \u003cp\u003eDuct detectors shut down air handling on smoke detection so the HVAC system does not spread smoke through the building. This one covers the low-velocity end of that job, and its housing pivots between square and rectangular footprints to fit tight clearances. Up to 30 units interconnect for multi-fan shutdown; all transfer their relays, but only the one that saw smoke goes into alarm.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e4-wire only — not for 2-wire applications; uses the 2D51 plug-in photoelectric head\u003c\/li\u003e \u003cli\u003e24 VAC\/VDC (20–29 VDC) or 120 VAC 50\/60 Hz\u003c\/li\u003e \u003cli\u003e100 to 4,000 ft\/min; -4°F to 158°F; 0 to 95% RH\u003c\/li\u003e \u003cli\u003eAlarm initiation SPST 2.0 A at 30 VDC; auxiliary DPDT 10 A; supervisory SPDT\u003c\/li\u003e \u003cli\u003eHousing listed to UL 268A\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eNo sampling tube is included; order one to suit the duct: DST1 (to 1 ft), DST1.5 (1–2 ft), DST3 (2–4 ft), DST5 (4–8 ft), DST10 (8–12 ft). It must span at least two-thirds of the duct width. Never land the auxiliary contacts on a panel initiating circuit.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":46202401063136,"sku":"DUCTSD","price":195.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/system-sensor-fire-alarms-default-title-system-sensor-ductsd-34518418555104.jpg?v=1763285032"},{"product_id":"system-sensor-st-10","title":"System Sensor ST-10 Britannia 'C' Spanner","description":"\u003cp\u003eDUCT SMOKE DETECTOR CONDUIT 10' WITH HOLES\u003c\/p\u003e\u003cdiv class=\"ths-mfr-data\"\u003e\n\u003cp\u003eST-10: Sampling Tube · Metal · Duct · 8 to 12ft · for Legacy Duct Smoke Detectors DH100 · DH200 · DH400 · and DH500 Series\u003c\/p\u003e\n\u003cp\u003eST metal sampling tubes may be installed from the front or back of System Sensor® HVAC duct smoke detection and monitoring products. The tubes lock securely into place and can be removed by releasing the front or rear locking tab.\u003c\/p\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/9020-0470.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDH100 SERIES Duct Detector Data Sheet\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/DH100ACDCI_DataSheet_A05-0315.pdf\" target=\"_blank\" rel=\"noopener\"\u003e4-Wire Ionization Duct Smoke Detector Datasheet\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/9020-0622.pdf\" target=\"_blank\" rel=\"noopener\"\u003eVelociti Series ADPF and ADPRF Data Sheet\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/gamewell-101625\/hon-ba-fire-9020-0470.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDH100 Series Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/gamewell-101625\/hon-ba-fire-9020-0567.pdf\" target=\"_blank\" rel=\"noopener\"\u003eAnalog, Addressable Low-Flow Duct Sensor\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/hbt\/en-us\/documents\/literature-and-specs\/datasheets\/cs-2463.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSS-PD and SS-PDR Photoeclectric Detector Data Sheet\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":46202459062496,"sku":"ST-10","price":45.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/system-sensor-fire-alarms-default-title-system-sensor-st-10-34518899294432.jpg?v=1793441112"},{"product_id":"edwards-est-tsd-cj-c01-superduct-four-wire-duct-smoke-detector","title":"Edwards EST TSD-CJ-C01 SuperDuct Four-Wire Duct Smoke Detector Controller, RJ-45","description":"\u003cp\u003e\u003cstrong\u003eEdwards TSD-CJ\u003c\/strong\u003e — SuperDuct four-wire duct smoke detector controller with RJ-45 modular connectors, supplied without a sensor.\u003c\/p\u003e\u003cp\u003eA SuperDuct four-wire duct detector is two pieces. The sensor sits on the duct and draws the airstream through a photoelectric chamber; the controller carries the line voltage input, the shutdown relays and the test controls. Edwards states it will not operate until a sensor is connected.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDrives one or two sensors — TSD-SJ, TSD-SJG or TSD-SJCO2 — by RJ-45 harness, within 15 feet\u003c\/li\u003e\n\u003cli\u003eOperating voltages: 20 to 29 Vdc, or 24 V, 120 V or 220\/240 V at 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003eOne normally open alarm contact, 2.0 A at 30 Vdc, for a panel initiating device circuit\u003c\/li\u003e\n\u003cli\u003eTwo Form C auxiliary relays, 10 A at 30 Vdc and 10 A at 250 Vac, for fan and damper control\u003c\/li\u003e\n\u003cli\u003eOne Form C supervision relay, 2.0 A at 30 Vdc; Alarm, Trouble and Power LEDs\u003c\/li\u003e\n\u003cli\u003eHousing 6.75 x 5.45 x 1.90 inches, rated -4 to 158 °F\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTSD-CT is the same controller with terminal blocks instead of RJ-45, TSD-CJG adds a cover gasket, TSD-4WJ combines controller and sensor in one assembly and TSD-SJ is the sensor alone.\u003c\/p\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":46232094441696,"sku":"TSD-CJ-C01","price":94.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/edwards-duct-detectors-default-title-edwards-est-tsd-cj-c01-superduct-four-wire-duct-smoke-detector-35477380923616.jpg?v=1763285220"},{"product_id":"kidde-fx-pdd-intelligent-addressable-optical-duct-detector","title":"Kidde FX-PDD Intelligent Addressable Optical Duct Detector","description":"\u003ch2\u003eKidde FX-PDD Intelligent Addressable Optical Duct Detector\u003c\/h2\u003e\n\u003cp\u003eThe Kidde FX-PDD Duct Smoke Detector is designed for easy installation and represents the perfect balance of practical design and advanced technology.\u003c\/p\u003e\n\u003cp\u003eThe FX-PDD features a unique design that speeds up installation and simplifies maintenance. Removable dust filters, conformally coated circuit boards, and optional water-resistant gaskets keep contaminants away from components, ensuring years of trouble-free service. When cleaning is required, the assemblies come apart easily and snap back together in seconds.\u003c\/p\u003e\n\u003cp\u003eThe duct smoke detector’s primary purpose is to provide early warning of an impending fire and shut down the HVAC unit in order to prevent smoke from circulating throughout the building. The duct smoke detector is designed for use in duct applications where temperatures can exceed standard detector capabilities.\u003c\/p\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":47019885527264,"sku":"FX-PDD","price":202.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/kidde-duct-detectors-default-title-kidde-fx-pdd-intelligent-addressable-optical-duct-detector-39957007859936.webp?v=1764161335"},{"product_id":"kidde-sd-2w-duct-detector-smoke-2-wire","title":"Kidde SD-2W Duct Detector Smoke 2-Wire","description":"\u003cp\u003e\u003cstrong\u003eKidde SD-2W\u003c\/strong\u003e — conventional two-wire SuperDuct duct smoke detector, supplied as a complete detector assembly.\u003c\/p\u003e\u003cp\u003eDuct detectors sample air inside HVAC ductwork so that smoke moving through the ventilation system is caught before it spreads. The SD-2W pulls duct air through a sampling tube into its sensing chamber and returns it through the supplied exhaust tube, driven by the pressure difference between the two.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePhotoelectric light-scattering sensing, 0.79 to 2.46 %\/ft obscuration\u003c\/li\u003e\n\u003cli\u003eOperating voltage 16 to 30 Vdc; standby 70 µA, alarm 5 to 100 mA\u003c\/li\u003e\n\u003cli\u003eAlarm impedance 50 to 750 Ω\u003c\/li\u003e\n\u003cli\u003eAir velocity 100 to 4,000 ft\/min; air pressure differential 0.005 to 1.00 in. of water\u003c\/li\u003e\n\u003cli\u003eOne Form C auxiliary alarm relay rated 2.0 A at 30 Vdc resistive\u003c\/li\u003e\n\u003cli\u003eAssembly 8.70 × 5.45 × 1.90 inches, under 2\" deep\u003c\/li\u003e\n\u003cli\u003eCompatible with most Kidde, Fenwal and Chemetron conventional panels per chart K-70-100\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSD-2WPCB is only the replacement two-wire sensor PCB kit, not a detector, and sampling tubes SD-T8 through SD-T120 are ordered separately by duct width. SD-TRM and SD-TRK are the remote test stations, SD-PH the high-humidity housing.\u003c\/p\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":47019951554784,"sku":"SD-2W","price":173.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/kidde-duct-detectors-default-title-kidde-sd-2w-duct-detector-smoke-2-wire-36504958533856.png?v=1763286045"},{"product_id":"kidde-sd-4wpcbt-duct-detector-accessory","title":"Kidde SD-4WPCBT Duct Detector Accessory","description":"\u003ch2\u003eKidde SD-4WPCBT Duct Detector Accessory, Replacement PCB\/Sensor Kit, Terminals\u003c\/h2\u003e\u003cdiv class=\"ths-mfr-data\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLess than 2” deep for easy installation\u003c\/li\u003e\n\u003cli\u003ePCB mounted photoelectric detector with on-board intelligence\u003c\/li\u003e\n\u003cli\u003eEnvironmental compensation with patented differential sensing\u003c\/li\u003e\n\u003cli\u003e-4°F to 158°F (-20°C to 70°C) operating range\u003c\/li\u003e\n\u003cli\u003e100 ft\/min. to 4,000 ft\/min air velocity rating\u003c\/li\u003e\n\u003cli\u003eStandard RJ45 modular interconnection\u003c\/li\u003e\n\u003cli\u003eStatus LEDs remain visible through clear assembly cover\u003c\/li\u003e\n\u003cli\u003eCover tamper reed switch for added security\u003c\/li\u003e\n\u003cli\u003eStandard sampling tube and mounting holes\u003c\/li\u003e\n\u003cli\u003eInstall in tandem with the controller assembly, or remotely from it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"ths-spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eController\u003c\/th\u003e\n\u003ctd\u003e6.75” x 5.45” x 1.90” inches (17.15 cm x 13.84 cm x 4.83 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSensor\u003c\/th\u003e\n\u003ctd\u003e8.70” x 5.45” x 1.90” (22.10 cm x 13.84 cm x 4.83 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eController with sensor\u003c\/th\u003e\n\u003ctd\u003e14.51” x 5.45” x 1.90” (36.86 cm x 13.84 cm x 4.83 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWire size High voltage power input terminals\u003c\/th\u003e\n\u003ctd\u003e(L\u0026amp;N): #12 to #22 AWG All others: #14 to #22 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTest Station to Controller\u003c\/th\u003e\n\u003ctd\u003e10 ohms max. per wire (i.e. 621 feet with 22 AWG, 3,952 feet with 14 AWG)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eController Interconnect\u003c\/th\u003e\n\u003ctd\u003e5 ohms max between first and last controller (i.e. 310 feet with 22 AWG, 1,976 feet with 14 AWG)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAir velocity rating\u003c\/th\u003e\n\u003ctd\u003e100 to 4,000 ft\/min and meets the required minimum air pressure differential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAir pressure differential\u003c\/th\u003e\n\u003ctd\u003e0.005 to 1.00 inches of water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSensitivity\u003c\/th\u003e\n\u003ctd\u003e0.67 to 2.46 %obscuration\/ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eReset time\u003c\/th\u003e\n\u003ctd\u003e2 seconds, max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower up time\u003c\/th\u003e\n\u003ctd\u003e8 seconds, max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAlarm test response time\u003c\/th\u003e\n\u003ctd\u003e5 to 7 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAlarm initiation relay Quantity\u003c\/th\u003e\n\u003ctd\u003e1 Style: Normally open Ratings: 2.0 A at 30 Vdc (resistive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eStyle\u003c\/th\u003e\n\u003ctd\u003eForm C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/K85001-0583%20--%20Four-Wire%20SuperDuct%20Duct%20Smoke%20Detector.pdf\" target=\"_blank\" rel=\"noopener\"\u003eK85001-0583 -- Four-Wire SuperDuct Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":47019952144608,"sku":"SD-4WPCBT","price":87.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/kidde-fire-alarms-default-title-kidde-sd-4wpcbt-duct-detector-accessory-36747861295328.png?v=1763286032"},{"product_id":"kidde-sd-ph-superduct-protective-housing","title":"Kidde SD-PH SuperDuct, Protective Housing","description":"\u003ch2\u003eUse the SD-PH Protective Housing when installing SuperDuct detectors in high-humidity environments\u003c\/h2\u003e\n\u003cp\u003eThe SD-PH is a weatherized housing that prevents condensation on the device by insulating the detectors and providing circulated air from the monitored HVAC duct. The SD-PH also adds a layer of protection against physical damage to the unit.\u003c\/p\u003e\n\u003cp\u003eThe SD-PH is easy to install and service. The hinged and transparent cover provides ready access to the detector, while keeping its status indicators visible at all times.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":47019953357024,"sku":"SD-PH","price":303.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/kidde-fire-alarms-default-title-kidde-sd-ph-superduct-protective-housing-37984990167264.jpg?v=1763286049"},{"product_id":"kidde-sd-sj-duct-detector","title":"Kidde SD-SJ SuperDuct Four-Wire Duct Smoke Sensor, RJ-45, Sensor Only","description":"\u003cp\u003e\u003cstrong\u003eKidde SD-SJ\u003c\/strong\u003e — SuperDuct four-wire duct smoke sensor with RJ-45 connectors, supplied as the sensor half only.\u003c\/p\u003e\u003cp\u003eThe Kidde ordering table lists SD-SJ as Sensor (RJ45), separate from SD-CJ Controller (RJ45) and SD-4WJ Controller w\/sensor, and a controller coupled with a compatible sensor is what makes up a four-wire duct smoke detector. The sensor samples duct air through a tube and signals the controller, which carries the relays that shut down fans and drive dampers.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePhotoelectric sensing with patented differential compensation; 0.67 to 2.46 %\/ft obscuration\u003c\/li\u003e\n\u003cli\u003eAir velocity 100 to 4,000 ft\/min\u003c\/li\u003e\n\u003cli\u003eSensor assembly 8.70 in. × 5.45 in. × 1.90 in., under two inches deep\u003c\/li\u003e\n\u003cli\u003eAlarm, trouble, dirty and power LEDs; magnet-activated test switch\u003c\/li\u003e\n\u003cli\u003eUp to 100 ft of CMP harness between each sensor and its controller\u003c\/li\u003e\n\u003cli\u003eUL range -4 °F to 158 °F, ULC range -4 °F to 120 °F\u003c\/li\u003e\n\u003cli\u003eExhaust tube included; sampling tube SD-T8 through SD-T120 ordered separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSD-SJ pairs only with the SD-CJ and SD-4WJ controllers. SD-ST is the same sensor with terminal blocks, and ESD-SJ and TSD-SJ belong to the ESD and TSD families.\u003c\/p\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":47019954667744,"sku":"SD-SJ","price":100.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/kidde-duct-detectors-default-title-kidde-sd-sj-duct-detector-36503486169312.png?v=1763286039"},{"product_id":"kidde-sd-t120-duct-detector-accessory-120-in-sampling-tube","title":"Kidde SD-T120 Duct Detector Accessory 120 in. Sampling Tube","description":"\u003ch2\u003eKidde SD-T120 Duct Detector Accessory, 120 in. Sampling Tube\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: rgb(255, 42, 0); text-decoration: underline;\"\u003e\u003cstrong\u003e*This item isn’t eligible for free shipping due to its size.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"ths-mfr-data\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for high air velocity duct applications. Up to 4000 ft\/min. (20.3 m\/sec.) with Photoelectric Detector\u003c\/li\u003e\n\u003cli\u003eStandard Kidde Intelligent detectors. Designed for use with standard photoelectric and photoelectric\/ heat Kidde Intelligent smoke detectors. Does not require “special”duct smoke heads\u003c\/li\u003e\n\u003cli\u003eStandard or relay detector base installed and prewired. Detector plugs-in to base then easily installs into housing\u003c\/li\u003e\n\u003cli\u003eInstall in ducts up to 10 ft. (3.05 m) wide\u003c\/li\u003e\n\u003cli\u003eRemote LED and test station accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"ths-spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAir Velocity Range\u003c\/th\u003e\n\u003ctd\u003e300 to 4000 ft\/min. (1.5 to 20.3 m\/sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating Environment Temperature\u003c\/th\u003e\n\u003ctd\u003e32 - 100º F (0  to 38º C)  Humidity: 0 to 93% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eStorage Environment Temperature\u003c\/th\u003e\n\u003ctd\u003e-4 to 140º F (-20 to 60º C); Humidity: 0 to 93% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eULI\/ULC Sensitivity Range\u003c\/th\u003e\n\u003ctd\u003e0.5% to 4.36% obscuration\/foot (for Optica)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e7-3\/8 inches (188mm) W x 7 inches (178mm) H x 5 inches (127mm) D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial and Finish\u003c\/th\u003e\n\u003ctd\u003e18 Gauge Galvanized Steel, Red - Baked Enamel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConduit Knockouts\u003c\/th\u003e\n\u003ctd\u003e4, Combination 1\/2 inch \u0026amp; 3\/4 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e15.2 to 19.95 Vdc (19 Vdc nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTemperature\u003c\/th\u003e\n\u003ctd\u003e32 to 120ºF (0 to 49ºC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOnboard LED Operation\u003c\/th\u003e\n\u003ctd\u003eRed LED - flashes when in alarm or test state\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMounting North American electric box\u003c\/th\u003e\n\u003ctd\u003e2 inch deep 2-gang or 4 inch square ; European electric box: 100 mm square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/K85001-0326%20--%20Intelligent%20Duct%20Detector%20Housing.pdf\" target=\"_blank\" rel=\"noopener\"\u003eK85001-0326 -- Intelligent Duct Detector Housing\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/K85001-0584%20--%20Intelligent%20SuperDuct%20Duct%20Smoke%20Detector.pdf\" target=\"_blank\" rel=\"noopener\"\u003eK85001-0584 -- Intelligent SuperDuct Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/K85001-0585%20--%20Two-Wire%20SuperDuct%20Duct%20Smoke%20Detector.pdf\" target=\"_blank\" rel=\"noopener\"\u003eK85001-0585 -- Two-Wire SuperDuct Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/K85001-0583%20--%20Four-Wire%20SuperDuct%20Duct%20Smoke%20Detector.pdf\" target=\"_blank\" rel=\"noopener\"\u003eK85001-0583 -- Four-Wire SuperDuct Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PublicMedia\/Catalog%20Sheets\/K85001-0613%20--%20Intelligent%20Duct%20Smoke%20Detector.pdf\" target=\"_blank\" rel=\"noopener\"\u003eK85001-0613 -- Intelligent Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/myeddie.edwardsfiresafety.com\/PrivateMedia\/Catalog%20Sheets\/K85001-2005%20--%20Intelligent%20Optica%20Duct%20Detector,%20Rotary%20Addressed.pdf\" target=\"_blank\" rel=\"noopener\"\u003eK85001-2005 -- Kidde Intelligent Optica Rotary Duct Smoke Detector\u003c\/a\u003e (Data Sheet)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":47019955060960,"sku":"SD-T120","price":22.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/SD-T120_1.jpg?v=1793580375"},{"product_id":"potter-pad200-duct-analog-addressable-duct-detector","title":"Potter PAD200-DUCT Analog Addressable Duct Detector","description":"\u003ch2\u003eThe PAD200-DUCT is designed and built to meet all local requirements, as well as the NFPA regulations regarding duct smoke detectors\u003c\/h2\u003e\n\u003cp\u003eAir sampling is accomplished by two tubes which protrude into the duct. An exhaust tube of one standard length (7”) is supplied in the installation kit with the smoke duct unit. Once the duct width has been determined the air intake sampling tubes must be ordered. Sampling tubes are supplied in three standard lengths: 2.5 ft., 5 ft., and 10 ft. and cut to size to fit the duct. Mounting the duct smoke unit is accomplished by the use of a template and 2 sheet metal screws, which are provided. Mounting can be achieved without the removal of the clear cover which is secured by 4 capture screws.\u003c\/p\u003e\n\u003cp\u003eEnhanced sensor technology allows the PAD200 Detector Series to comply with the new UL 268 7th edition standards while bringing customers an even higher standard in smoke detection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLegacy Unit; Latest Model is PAD300-DUCT\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDetects smoke in building HVAC ducts\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eShips complete with housing and head\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with addressable IPA and AFC\/ARC series panels\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSLC in and out wire terminals\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSLC Class A, Class X \u0026amp; Class B\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstallation without removing the head\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eListed Air Velocity of 100 to 4,000 ft\/minute\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo screens or filters in housing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDurable plastic enclosure and clear cover\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":47585513734368,"sku":"PAD200-DUCT","price":250.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/potter-duct-detectors-default-title-potter-pad200-duct-analog-addressable-duct-detector-37986230993120.png?v=1763286413"},{"product_id":"potter-pad100-drts-duct-detector-remote-test-switch","title":"Potter PAD100-DRTS Duct Detector Remote Test Switch","description":"\u003ch2\u003ePotter PAD100-DRTS Supervised Duct Detector Remote Test Switch\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe PAD100-DRTS module does not require an SLC loop address. The PAD100-DRTS provides a supervised remote test switch for the PAD100-DUCTR duct detector. Active and Pilot LEDs provide status of the PAD100-DUCTR detector. Keyed switch allows remote testing of the PAD100-DUCTR duct detector.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":47585513832672,"sku":"PAD100-DRTS","price":152.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/potter-fire-alarms-default-title-potter-pad100-drts-duct-detector-remote-test-switch-37978568065248.jpg?v=1763286442"},{"product_id":"potter-pad300-ductr-analog-addressable-duct-detector","title":"Potter PAD300-DUCTR Analog Addressable Duct Detector","description":"\u003cp\u003eThe PAD300-DUCTR is designed and built to meet all local requirements, as well as the NFPA regulations regarding duct smoke detectors\u003c\/p\u003e\n\u003cp\u003eAir sampling is accomplished by two (2) tubes which protrude into the duct. An exhaust tube of one (1) standard length (7”) is supplied in the installation kit with the smoke duct unit.\u003c\/p\u003e\n\u003cp\u003eOnce the duct width has been determined, the air intake sampling tubes must be ordered.\u003c\/p\u003e\n\u003cp\u003eSampling tubes are supplied in three standard lengths: 2.5 ft., 5 ft., and 10 ft. and cut to size to fit the duct.\u003c\/p\u003e\n\u003cp\u003eMounting the duct smoke unit is accomplished by the use of a template and two (2) sheet metal screws, which are provided.\u003c\/p\u003e\n\u003cp\u003eMounting can be achieved without the removal of the clear cover which is secured by four (4) capture screws.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDetects Smoke in Building HVAC Ducts\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eShips Complete with Housing and Head\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with Addressable IPA and AFC\/ARC Series Panels\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSLC Class A, Class X \u0026amp; Class B\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstallation Without Removing the Head\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eListed Air Velocity of 100 to 4,000 ft\/minute\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo Screens or Filters in Housing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDurable Plastic Enclosure and Clear Cover\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIntegrated Cover Tamper Switch\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUtilizes Simple Snap in Sampling Tubes STN Series\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOne Form C Relay\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUUKL Listed for Smoke Control\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with Supervised PAD100-DRTS Remote Test Switch, MS-RA, MS-KA\/R,\u003c\/li\u003e\n\u003cli\u003eMS-KA\/P\/R Remote Indicators\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct includes 5-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":47602272469216,"sku":"PAD300-DUCTR","price":350.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/potter-duct-detectors-default-title-potter-pad300-ductr-analog-addressable-duct-detector-38071652810976.jpg?v=1763286463"},{"product_id":"space-age-ssu-sl-2000-p-conventional-duct-smoke-detector","title":"Space Age SSU-SL-2000-P Conventional Duct Smoke Detector","description":"\u003ch2\u003eSpace Age SSU-SL-2000-P Duct Smoke Detector Photoelectric Voltage 4-Wire Low-Flow\u003c\/h2\u003e\n\u003cp\u003eThe SL-2000 Series Smoke Duct Detector is the latest innovation for early detection of smoke and products of combustion present in air moving through HVAC ducts in Commercial, Industrial and Residential applications.\u003c\/p\u003e\n\u003cp\u003eThe SL-2000 is designed to prevent the re-circulation of smoke by the air handling systems, fans, and blowers. Complete systems may be shut down in the event of smoke detection. Output terminals are provided for remote accessories such as horns, strobes, remote status indicators and test\/reset key switches or push buttons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEarly smoke detection in HVAC ducts\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrevents smoke re-circulation\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuitable for commercial, industrial, and residential use\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with remote accessories\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eShuts down systems upon smoke detection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Space Age","offers":[{"title":"Default Title","offer_id":47618563178720,"sku":"SSU-SL-2000-P","price":176.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/space-age-duct-detectors-default-title-space-age-ssu-sl-2000-p-conventional-duct-smoke-detector-38130469634272.jpg?v=1763286469"},{"product_id":"apc-rt-3000-p-weatherproof-duct-smoke-detector-photoelectric","title":"APC RT-3000-P Weatherproof Duct Smoke Detector Photoelectric","description":"\u003ch2\u003eAir Products and Controls RT-3000-P Weatherproof Photoelectric Duct Smoke Detector\u003c\/h2\u003e\n\u003cp\u003eThe RT-3000 photoelectric weather tight duct smoke detector builds on our commitment to installer\/servicer friendly products, and significantly reduces the total cost of ownership versus other comparable products.\u003c\/p\u003e\n\u003cp\u003eOur attention to detail has yielded a host of “No-Tools Required” features, as well as a multi-Application performance level as yet unmatched in the industry. \u003c\/p\u003e\n\u003cp\u003eThe weathertight NEMA 4X rated corrosion resistant enclosure coupled with extended temperature listings allow installation in the widest possible range of indoor\/outdoor environments.\u003c\/p\u003e","brand":"Air Products and Controls","offers":[{"title":"Default Title","offer_id":47635571146976,"sku":"RT-3000-P","price":216.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/7186\/5312\/files\/air-products-and-controls-duct-detectors-default-title-apc-rt-3000-p-weatherproof-duct-smoke-detector-photoelectric-38268005023968.png?v=1763286502"}],"url":"https:\/\/thefirealarmsupplier.com\/collections\/duct-detectors.oembed?page=3","provider":"The Fire Alarm Supplier","version":"1.0","type":"link"}