Detecting gas: LPG, natural gas, and coal gas Detecting gas: LPG, natural gas, and coal gasPower supply: AC100V~AC240VPower frequency: 50/60HzRated load: <4WAlarm thickness: LPG: 0.1~ 0.5%; natural gas: 0.1~ 0.3%; coal gas 0.1~ 0.5%Alarm volume:≥85dBWorking environment: -1050 relative humidity <97RHStorage temperature: -2555 gas alarm