220VAC power input convenient Design Combustible LPG gas, coal gas, oil gas etc. Detector and Auto Siren Strobe Alarm Unit. It is independently used without control panel or wiring. It will self test and with fault light indication. It is suitable for kitchen, living room etc. for fire prevention. ProductName:Gas Alarm Detailed: Hot wire type sensor -Easy installation and maintenance -Modernized design -Detect all sorts of combustible gases, LPG and LNG include city gas -Ideal for all kitchens -Excellent reliability & high stability -Self test function -Durable sensor head -Less affected by other organic solvent -High Accuracy -AC power input and adapter built-in -Loud sound signal of 85 dB at alarm mode -Three-year limited warranty. -suitable for the safety valve. SPECIFICATIONS : Power Source :220V AC Sensitivity : Propane LEL: 2.1 Vol% / HEL(UEL): 9.5 Vol% Butane LEL: 1.8 Vol% / HEL(UEL): 8.4 Vol% Methane LEL: 5.0 Vol% / HEL(UEL): 15.0 Vol% Power Consumption : 1.7W Operating Temperature : -10oC ~ 50oC Ambient Humidity : Less than 95% RH Horn Level :75 Decibels at 10 feet Standby Mode : Green LED on Alarm Mode : Red LED flashes and an acoustic alarm Size: 12.2*5.8*9.8cm Weight: 265g