Stand-combustible Gas Detector BJ-92-1A-11 Combustible Gas Detector Detection of gas: 1A: natural gas BJ-92-1A-11 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-11 Combustible Gas Detector Technical Parameters * Detection of gas: natural gas * Detection method: FIGARO semiconductor gas sensor * Alarm concentration:â?? Gas explosion limit below 25%â?? * Power supply: AC220V ± 15% * Power consumption: 3W or less * Temperature: -10 ~ 55'C