... detector,natural gas alarm Independent Catalytic sensor use for Natural Gas, LPG,Coal Gas Operating voltage: 85-265V AC LPG detector,natural gas alarmwith LED ... for Natural Gas / LPG / Coal Gas leakage detectingCatalytic sensor, with digital LED display for concentration Operating voltage: 85-265V AC; Wall mounted;Alarm output ... 118.5*82*43mm . Execute criterion:GB15322 LPG detector,natural gas alarm