Stand-combustible Gas Detector BJ-92-1A/BJ-92-1C Combustible Gas Detector Detection of gas: 1A: liquefied natural gas 1C: artificial coal gas BJ-92-1A/BJ-92-1C Combustible Gas Detector Output: * DC12V pulse output * AC220V contact output * AC220V pulse output * AC220V Output * Relay contact (normally open output), with the controller BJ-92-1A/BJ-92-1C Combustible Gas Detector Technical Parameters * Detection method: FIGARO semiconductor gas sensor * Alarm concentration: 1A: Gas explosion limit below 25% 1C: 400 PPM * Power supply: AC220V ± 15% * Power consumption: 3W or less * Temperature: -10 ~ 55'C