First Alert 120V Plug-In Electrochemical Carbon Monoxide Alarm & Gas Detector is designed to provide reliable detection of dangerous carbon monoxide, propane, and methane gas threats using advanced electrochemical sensors. This combo alarm features a backlit digital display that clear readouts of current and peak gas levels, helping users identify potential leaks from appliances, generators, and other household sources. Its compact, low-profile design plugs directly into any AC outlet without the need for additional mounting hardware, ensuring it won’t block other sockets. The included line cord allows for versatile placement options, while the 85-decibel alarm promptly alerts you when a threat is detected. For added convenience, the alarm has a pivoting battery drawer that enables quick and easy battery changes without removing the device. Model Number: 1039760