Combination Gas & Carbon Monoxide Detectors - 3 Packs Plug in Carbon Monoxide Alarm & Natural Gas Detector for Home, 2-in-1 Co Detector & Combustible Gas Detector with Digital Display, Easy to Install
【Hembisen Plug in Gas & Carbon Monoxide Detector KH-522】This is a newly optimized 2-in-1 unplugged detector with a backup power feature so you can keep tabs on your home.
【Highly Reliable Electrochemical Sensor】Two-in-one gas detection with fast response time.
【2-in-1 Digital Display & Alarm]】When the detected gas reaches the default value, it will immediately display PPM or LEL separately and emit 85dB sound.
【Backup Power Function】Can be equipped with 9V alkaline batteries, which can continue to supply power in case of power outage, allowing the product to continue to work normally.
【Plug and Play Design】Plug in the power supply, warm up for 60 seconds, and then the green light shows that it is working normally.
【2-in-1 Detection Function】Can detect carbon monoxide gas and combustible gas; combustible gases include LNG, LPG, propane, methane and etc
