Kidde 260-CO — a 12/24 VDC carbon monoxide detector with alarm and trouble relays, an integrated 85 dB temporal-4 sounder, a 10-year end-of-life signal and the SafeTest™ functional test feature.
An internal electrochemical sensor communicates with an on-board microprocessor that tracks CO levels over time, giving quick response, fast reset and strong false alarm immunity. The detector adjusts automatically for normal indoor temperature variations and compensates for sensitivity drift over its service life. It is a four-wire device powered from a Class 2 output of a control panel or resettable auxiliary power supply certified to UL 985 or UL 864, and it reports to the panel through its Form C alarm relay and a common trouble relay that opens on lost power, CO cell trouble or cell end-of-life. The 260-CO is intended for indoor dwelling-unit applications in residential and commercial occupancies such as hotel rooms and dorm rooms; it is not intended for industrial applications such as refineries or parking garages.
Specifications
| Input voltage |
12 or 24 VDC from a UL 985 or UL 864 control panel or resettable auxiliary power supply |
| Current consumption |
20 mA normal; 40 mA alarm (75 mA in test) |
| Alarm relay |
Form C, 150 mA at 33 VDC |
| Common trouble relay |
Normally open, held closed with power applied; 150 mA at 33 VDC |
| Sounder |
85 dB, temporal-4 pattern |
| Sensor life |
10 years from date of manufacture |
| CO sensitivity |
70 ppm: 60 to 240 min; 150 ppm: 10 to 50 min; 400 ppm: 4 to 15 min |
| Electrical box |
2-1/2 in. (64 mm) single-gang |
| Wire size |
14 to 22 AWG (0.25 to 2.0 mm²) |
| Dimensions (W × L × D) |
3.1 × 4.6 × 1.4 in. (7.8 × 11.7 × 3.6 cm) |
| Operating environment |
40 to 100°F (4.4 to 37.8°C); 10 to 90% RH noncondensing |
| Color |
White |
| Standards |
UL 2075 compliant; CO sensitivity conforms to UL 2034 |
Installation notes
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Dedicated CO zone: connect the detector only to a zone used exclusively for CO detection and monitored 24 hours a day — never to an initiating circuit with fire or security devices.
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Placement: install per NFPA 720. Wall-mounted units go at least 5 ft (1.5 m) above the floor; ceiling-mounted units at least 1 ft (0.3 m) from any wall. Keep detectors 5 ft (1.5 m) from cooking appliances and 10 ft (3 m) from fuel-burning appliances.
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SafeTest: press and hold TEST/HUSH for 5 to 10 seconds to enter SafeTest mode, then spray UL-classified CO test gas at the sensor port; the alarm relay, sounder and red LED activate in the temporal-4 pattern. SafeTest meets the NFPA 720 (2009/2012) functional test requirement.
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Tandem interconnect: with an ESL 405-01 polarity reversal module, an alarm on one detector sounds the other 260-CO detectors on the same loop; only the initiating detector blinks red.
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Replacing a 240-COe: use the 250-COPLT adapter plate to cover paint discoloration left by the old detector.
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End of life: a flashing green LED and intermittent chirps indicate the detector needs replacing, and the trouble relay signals the panel as the sensor approaches end of life.
Related models
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250-COPLT-5PKG — adapter plates for replacing a 240-COe with a 260-CO.
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ESL 405-01 — 24 VDC polarity reversal module for tandem interconnect.
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240-COe — the earlier Kidde CO detector the 260-CO replaces.
Specifications taken from the Kidde Commercial data sheet "12/24VDC Carbon Monoxide Detector with SafeTest™ 260-CO," document K85001-0632 issue 1.1. Manufacturer specifications are subject to change without notice.
Documents
FAQ
How is the 260-CO connected to a panel?
It is a four-wire device powered from a Class 2 output of a UL 985 or UL 864 control panel or resettable auxiliary supply, with a Form C alarm relay and a common trouble relay.
Can it share a zone with smoke detectors?
No. Connect it only to a zone dedicated to CO detection and monitored 24 hours a day, never to an initiating circuit with fire or security devices.
How do I test it with real CO gas?
Hold the TEST/HUSH button for 5 to 10 seconds to enter SafeTest mode, then spray UL-classified CO test gas at the sensor port. SafeTest meets the NFPA 720 functional test requirement.
Can it replace a 240-COe?
Yes. The 250-COPLT adapter plate covers the paint discoloration left behind when replacing a 240-COe with a 260-CO.
