GK series gas leak alarm is a kind of wall-hung household gas alarm designed to detect the concentration of combustible and toxic gases or vapors, Provides visual and audible signals when the gas concentration reaches presetting level, remind you take prompt favorable action , you may start up other link equipment, ventilate gas or shut off gas supply to avoid fire, explosion, suffocation, and other evil accident, Alarms are available for liquefied petroleum gas (LPG), natural gas (methane), propane, hydrogen, town gas, smoke.