This product is a WiFi flammable gas alarm, which is used to detect the leak of flammable gas and prevent the damage caused By the gas leak. The alarm uses a high stability semiconductor gas sensor, which has the characteristics of high stability and small size Sensitivity drift. When a flammable gas leak is detected and the concentration value set by the alarm is reached, the alarm will send out an Alarm signal. This product is used indoors where leakage may occur, such as in kitchens. Specification Before installation, please confirm detection gas density heavier or lighter than air. If gas detection is heavier than air: LPG. Etc, install 0.3-1m height from ground, semi-diameter at gas source less than 1.5m. If gas detection is lighter than air: natural gas, Manufactured gas, marbled gas, etc., install 0.3-1m height from ceiling, half diameter at gas source less than 1.5m.