... gas alarm,gas detector,gas leakage detector,natural gas detector,LPG gas detector,methane detector gas alarm,gas detector,gas leakage detector,natural gas detector,LPG gas detector,methane detectorMAIN FEATURE High reliability sensorAuto-reset after alarmMCU processing adoptedAuto detect sensor failureInduced Gas Natural gas ... 433MHZ (wireless type)Radio Distance: 100m in open area (wireless type) ...