The Combustible Gas Detector is a low voltage electronic detector of combustible, heating type gases. This detector 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 this detector. You can use it in ordinary indoor locations of family living units and office work spaces. It's also intended for installation in buildings in non-hazardous locations such as residences, retail stores, office buildings, and institutional buildings. This detector has been evaluated by UL for methane (natural gas) and propane (LP) gas. You should NOT use it to detect smoke, fire or carbon monoxide.
A green LED signifies that the Combustible Gas Detector is armed. If it detects gas, the Red LED turns on and the alarm condition relay activates.