Carbon Monoxide Detection The CM-E1 is a low voltage detector of Carbon Monoxide (CO). The CM–E1 is designed for connection to UL Listed Fire Alarm/Burglary Control Panels. Alarm control panels that work on 12 or 24 VDC can provide battery backup to the CM-E1 detectors. This carbon monoxide detector is designed to detect CO gas from ANY source of combustion. It is NOT designed to detect smoke, fire or any other gas. Features • Listed to UL standard 2075 for the Standard For Safety for Gas and Vapor Detector and Sensors • Tested to UL 2075 using UL 2034 Sensitivity limits for carbon monoxide gas • California State Fire Marshal Listed • Surface mounts to a wall using the supplied enclosure rear housing • Flush mounts in a 2 x 4 (1-1/2 inch deep minimum) single gang switch, or handy electrical box • Small, low profile, attractive unit in a white plastic case • Detector alarms at multiple levels of exposure to carbon monoxide based on time weighted averages of the gas present • Test & Reset switch conducts internal tests and actuates alarm relay • Highly linear electrochemical sensor • N.O. or N.C. SPST Alarm Relay and N.C. SPST Trouble relay to connect to Alarm Control Panels • Buzzer: Produces repeating loud tone bursts during alarm, and chirps if sensor trouble is found