Product details:

It incorporates photoelectric smoke and electrochemical CO sensor for efficient operation. It has frequency rating of 2.4 GHz. The alarm in white color, is wall or ceiling mountable. It has solid state piezo type horn. It has a dimension of 5.44 Inch x 5.44 Inch x 1.5 Inch. It operates at temperature range of 4 to 38 deg C. This alarm resets automatically when CO clears. It offers interconnection with smoke, carbon monoxide, heat alarms and relays. Smoke/CO combo alarm is UL listed.