CO1224TR- Carbon Monoxide Detectors with RealTest ®

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The CO1224TR is a round, 12/24 volt, 6-wire, system-monitored carbon monoxide detector with RealTest (R) Technology, ideal for ceiling installation

Brand: System Sensor
Part Number: CO1224TR

Availability: In stock




When dangerous amounts of CO are detected, the CO1224TR CO detector alerts residents by sounding and flashing a temp 4 signal alarm. With 24/7 central station monitoring, residents are guaranteed protection whether they are away from home, sleeping, or already suffering from the effects of CO.
The CO1224 Series detectors are designed for system operation. These detectors are fully listed to UL 2075 (US models only) and CSA 6.19-01 (Canada model only) and offer a code-required trouble relay to send a sensor failure or end-of-life signal to the control panel and the central station. The CO1224TR detectors also use SEMS-type terminal Philips head screws for quicker and more positive wiring connections and code-required wiring supervision.
With a low current draw, these detectors enable more devices to be connected to the panel, limiting the need to purchase extra power supplies or more expensive panels. As 12/24 VDC detectors, the CO1224 Series detectors will operate on most industry security and fire alarm control panels.
With RealTest® technology, the CO gas sensing cell used in the CO1224 Series CO detectors can be tested using a CO gas agent, fully meeting the requirements of NFPA 720: 2009 (US models only).
Simply put the detector into RealTest mode, spray a small amount of CO into the detector per the installation instructions, and within seconds the detector will alarm, indicating successful gas entry.


•    A 10-year end-of-life timer
•    RealTest® enables a functional test using canned CO
•    A code-required trouble relay
•    Wiring supervision with SEMS terminals
•    12/24 VDC
•    A low current draw of 20 mA in standby and 40 mA in alarm
•    Versatile mounting for wall and ceiling
•    Accurate and reliable electrochemical sensing technology

Additional Info

Additional Info

Part Number CO1224TR
What's in the box No
Variant No


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Electrical Specifications
System Voltage
Nominal:      12/24 VDC
Min: 10 VDC
Max: 33 VDC
Avg. Standby Current: 20 mA
Max Alarm Current: 40 mA (75 mA test)
Alarm Contact Ratings: 30 VDC @ 0.5 A
Trouble Contact Ratings: 30 VDC @ 0.5 A
Audible Signal (temp 4 tone): 85 dBA min. in alarm (at 10ft)
Max. Start-up Capacitance: 20 uF

Physical Specifications
Operating Temperature Range: 0° to 40°C (32° to 104°F)
Operating Humidity Range: 22 – 90% %RH
Diameter: 6.0 ̋
Height:  1.25 ̋
Weight: 7 oz
Wire Gauge Acceptance: 14-22 AWG