... , shutoff the valve when gas leakaging This is home gas detector system, easy install in the house,Plug in the gas ... on the wall power, the green LED will lighting,connecting the gas valve, the gas detector will sound and lighting and send ... leakaging in the house, then the house are safe. Gas detector PNG101VMFeaturesGas detectorDetect LPG/LNG leakage.Intelligent MCU control, low power ...