Simplex 4098-9714 — a TrueAlarm addressable photoelectric smoke sensor for Simplex IDNet and MAPNET II fire alarm control units.
The 4098-9714 uses a pulsed LED light source and a silicon photodiode receiver to measure smoke obscuration, and its base digitizes and transmits that analog value to the control unit every four seconds. The control unit maintains a running average for each sensor and compares the present value against that average over time, which compensates for dust, dirt and component aging and reduces nuisance alarms. Peak values are logged at the panel so sensitivity can be selected per point, and the panel can apply timed or multi-stage set points — for example a 0.2% level for investigation and a higher level for alarm. The sensor head is a separate SKU from its base; a TrueAlarm base such as the 4098-9792 is ordered separately and carries the address DIP switch.
Specifications
| Device type |
Addressable TrueAlarm analog photoelectric smoke sensor |
| Communications |
IDNet or MAPNET II two-wire, auto-selected; one address per base |
| Standard sensitivity |
1.25% to 3.1% per foot, selected at the fire alarm control unit |
| Special-application fixed sensitivities |
0.2%, 0.5% and 1.0% per foot, user-selectable per sensor |
| Sensing method |
Pulsed LED source with silicon photodiode receiver; 360° smoke entry with built-in insect screen |
| Operating temperature |
15°F to 122°F (-9°C to 50°C) |
| UL listed operating temperature range |
32°F to 100°F (0°C to 38°C) |
| Storage temperature |
0°F to 140°F (-18°C to 60°C) |
| Humidity |
10% to 95% RH |
| Air velocity rating |
0 to 4,000 ft/min (0 to 1,220 m/min) |
| Housing |
Frost white; NEMA 1 rated |
| Base wiring terminals |
Screw terminals for in/out wiring, 18 to 14 AWG (0.82 mm² to 2.08 mm²) |
| Compatible bases |
4098-9792, 4098-9789, 4098-9791, 4098-9780 (white); 4098-9775, 4098-9776 (black) |
| Compatible control units |
4007ES, 4010, 4010ES, 4100ES and 4100U series; 4008 series with reduced feature set; 4020, 4100 and 4120 series, Universal Transponders and 2120 TrueAlarm CDTs equipped for MAPNET II |
| Listings |
UL 268 7th Edition and ULC-S529 listed; FM approved; CSFM listed; MEA (NYC) accepted |
Installation notes
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UL 268 7th Edition limit: fixed sensitivity settings higher than 1.0% per foot are not UL 268 7th Edition compliant.
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Base ordered separately: the addressable electronics and the address DIP switch live in the base, not the sensor head, so the address stays with the location when a sensor is swapped.
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Box requirements: a 4 in. octagonal or 4 in. square box of 1-1/2 in. minimum depth, or a single-gang box of 2 in. minimum depth, is required for the standard base.
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Adapter plate: the 4098-9832 adapter plate is required for surface or semi-flush mounting to a 4 in. square box and for surface mounting to a 4 in. octagonal box.
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Spacing: on smooth ceilings a 30 ft (9.1 m) smoke sensor spacing may be used as a guide; select locations per NFPA 72 after considering the layout and contents of the protected area.
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Air velocity: because sensing is photoelectric, air velocity is not normally a factor other than its effect on smoke flow through the area.
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Sensor substitution: a heat sensor can be fitted to the same base during dusty construction phases without reprogramming; the panel reports an incorrect sensor type but the heat sensor operates at a default sensitivity.
Related models
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4098-9774 — the same photoelectric smoke sensor in a black housing
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4098-9733 — TrueAlarm heat sensor, rate-compensated fixed temperature with optional rate-of-rise, uses the same bases
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4098-9734 — high-temperature heat sensor adding a 190°F (88°C) set point; IDNet only on 4100ES, 4010ES and 4007ES
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4098-9792 — the standard white TrueAlarm sensor base this sensor mounts on
Specifications taken from the Johnson Controls / Simplex data sheet "TrueAlarm Analog Sensing — TrueAlarm Analog Sensors, Photoelectric and Heat, Standard Bases and Accessories," document S4098-0019 Rev. 31 (06/2023). Manufacturer specifications are subject to change without notice.
