Features: -Hot wire type sensor -Easy installation and maintenance -Modernized design -Detect all sorts of combustible gas, 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 ~ DC adaptor included -Loud sound signal of 85dB 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: -10 ~ 50癈 -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 -Type Of Gas Sensed: Natural gas, town gas, LPG -Size: 110mm*69*36mm -Weight: 344g/pc -Color box size: 43mm*110mm*142mm -Quantity/box: 100pcs