... .Combustible GAS Smoke detector 2.Independent alarm,easy install 3.OEM CCC ISO 4.Lowest price,battery 5.AC 110V-240V115dB Description:1.GAS ... .2.while detector density reach the limited,it gives off alarm warning,cause people attention.3.Manual test,auto reset after ... for room,hall,kitchen,party,no smoking place,hotel,factory and so on. Instruction:Plug in the power, the green light ...