First Alert 120V Plug-In Electrochemical Carbon Monoxide Alarm & Gas Detector Filter Cartridges Model Number: 004378

Model Number: 004378

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First Alert 120V Plug-In Electrochemical Carbon Monoxide Alarm & Gas Detector Filter Cartridges Model Number: 004378First 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 offers clear readouts of current and peak gas levels, helping users identify potential leaks from appliances, generators, and other household sources. Its compact, low profile