220V POWERED GAS LEAKAGE ALARM Features: -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 -Durable sensor head -Less affected by other organic solvent -High Accuracy -AC ~ DC adaptor included -Loud sound signal of 85 dB at alarm mode -Three-year limited warranty.-suitable for the safety valve.