【Keep Safty】-- When combustible gases leak (kitchen methane / natural gas /camping propane) exceed the standard, this alarm will sound an 80dB siren speaking voice with top flashing red light until the ambient gas volume falls below alarm set point. 【Powerful Functions】-- This alarm precisely measures and displays an easy to read concentration (0 ~ 20 % LEL) of combustible gas, include natural gas (Main Components: Methane), liquefied gas (Main Components: Butane, Propane), and urban coal gas (Alkane, Olefin, Arene). It sounds alarm and flashes red light once concentration over 5% LEL. 【Durable & Energy saving】-- This detector is anti-mildew, anti-pest, and anti-corrosive. Double-sided PCB, flame-retardant ABS plastic, wipes clean easily. It uses <3 watts of electricity, much power saving. 【Easy to Install】-- Plug-In gas alarm design for home use, A/C-powered, much convenient. 【Factory Warranty】-- This gas alarm has passed the professional gas detection test in our factory. We get CE & ROHS Certificates and China Compulsory Certificate. All Ourjob alarms can be 100% guarantee, any quality problems, you can return or get a refund within 30days., Weight: 0.55125 Pounds, Manufacturer: YCD