Hot wire type sensor-Easy installation and maintenance -Modernized design -Detect all sorts of combustible gases, LPG and LNG includecity gas -Ideal for all kitchens -Excellent reliability & high stability -Self test function -75db sound-metal bracket for easy installation-Durable sensor head -Less affected by other organic solvent -High Accuracy -AC ~ DC adaptor included -Loud sound signal of 75 dB at alarm mode --Five years limited warranty. -suitable for the safety valve.SPECIFICATIONS : Power Source :220V ACSensitivity : 10%LELPower Consumption : 2W Operating Temperature : -10oC ~ 50oC Ambient Humidity : Less than 90% RH Horn Level :75 Decibels at 10 feet Standby Mode : Green LED on Alarm Mode : Red LED flashes and an acoustic alarm Type Of Gas Sensed : Natural gas, town gas, LPG SIZE:110mmx69x36mmWeight:<300g/pcs producing area:China payment:T/T, L/C