light indicator:green(flash when under warm-up state,always bright under working state)
alarm indicate: the red light flash
alarm state: the red light flash and the buzzer sound(when the gas density been detected  is under the alarm point,the alarm return to inspect state
Reaction gas: coal gas, natural gas, liquid petroleum gas
Power supply:12VDC
Buzzer volume ≥7 0dB/m
Alarm density: 15%LEL
Resume density: 8%LEL
Working environment: :-10℃~+45℃ ，relative humidity≤90%RH
Stability: The alarm density error of long-term working ≤ ±5%LEL
Repeatability: The alarm density error of repeat testing≤ ±5%LEL
The alarm density error  ≤ ±5%LEL
Alarm way: Photic and phonic alarm, networking signal output
Consumption: <1.7W