Parts List: 1x Gas Leak Detector 1x Screwdriver 1x Instruction Manual Product Specification: Product name: Gas Leak Detector What are the hazards of natural gas leakageLz 1.Brain hypoxia leads to poisoning. 2.Electrical appliances spark or even explode. 3.Threatening life safety and property loss. Key Feature: Premium Material: Natural gas detector is made of flame retardant material to reduce the potential gas explosion risky and keep family?Zs safety. Battery Powered: Gas leak monitor is powered by 2x 1.5V AAA batteries (not included), no worry about wire or socket. Please prepare battery before using. Easy To Use: Automatic calibration in 30s after startup, and all you have to do is press the ON switch. The zero key will automatically reset the countdown for