WiFi Gas Detector Features: Input voltage: DC 5V (micro USB interface) Working current: 350mA Response time: 30s Alarm Sound: 85dB Installation type: wall or celling mounting Air pressure: 86~106Kpa Working Temperature: -10C~60 C Work Humidity: 80%RH, no freezing Item Size: Approx. 10.2 * 10.2 * 3.5cm (L*W*H) Item Weight: Approx. 143g / 5oz App: iOS/Android " Smart Life " or " TuyaSmart" APP Remote Control Smart Instruction: This gas detector used for te natural gas field,which can do the security detecting and alarming for the burning,explding,poisoning caused by naturals gas leaking and the device has the high sensitive,stable,full type gas detecting and small size features. Feature: When the device detected the thickness of the nature get to 8% LEL,device will alarn and push the message by app,and close the electrical valves, when the fas thickness recovery to 0% LEL, device will stop alarming and recover to normal monitoring.