WiFi standalone gas leakage alarm detector linkage to smart gas valve controller automatically for elderly care. WiFi standalone gas leakage alarm detectoris a smart combustible gas detector with sound prompt alarm. When trigger the gas detector, it will alarm with build-in siren. This detector adopt semiconductor sensor which is stable and reliable. It keeps the place safe from the threats of combustible gas (such as liquefied petroleum gas, natural gas, methane, etc.). It’s widely used in kitchen, living room, garage, shopping mall, hotel, restaurant, office building, school, bank, library, computer house and storehouse, etc. where has no water vapor and has threats of combustible gas.