CO/Smoke Detectors

Combination CO and Smoke Detectors

The i4 series combines photoelectric smoke sensing and electrochemical carbon monoxide sensing in one system-connected detector. The COSMO-2W is the 2-wire model and the COSMO4W the 4-wire model; each reports smoke and CO as separate conditions through its COSMOD interface module, so the panel can sound the Temporal 3 fire pattern for smoke and the Temporal 4 CO pattern for carbon monoxide as NFPA 72 requires.

The CO cell is rated for 10 years, signals end of life to the panel and with a local chirp, and is replaced in the field with the CO-REPL cartridge instead of replacing the whole detector. Applications include hotel rooms, dormitories, apartments, and any residential occupancy with fuel-burning appliances or attached garages where codes call for CO detection alongside smoke. Listed to UL 268 for smoke and UL 2075 for CO.

Interface modules and replacement cells are under accessories, and the broader conventional line is under conventional CO detection. Browse the full System Sensor catalog, or contact our team to match detector, module, and panel.

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