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Combination plug-in alarm provides 3‑in‑1 protection by detecting carbon monoxide, propane, and natural/methane gas using advanced electrochemical sensing. Backlit digital display shows current and peak CO levels, while status LEDs and a single test/silence button make operation straightforward. Unit plugs into any standard AC outlet and includes a 9V battery backup to maintain protection during power outages, sounding an 85 dB alarm for hazardous conditions.
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Combination plug-in alarm provides 3‑in‑1 protection by detecting carbon monoxide, propane, and natural/methane gas using advanced electrochemical sensing. Backlit digital display shows current and peak CO levels, while status LEDs and a single test/silence button make operation straightforward. Unit plugs into any standard AC outlet and includes a 9V battery backup to maintain protection during power outages, sounding an 85 dB alarm for hazardous conditions.

The right temp in just the right spot - Meet the Nest Temperature Sensor (2nd gen). Now it’s easy to manage hot and cold spots throughout your home. Just put it in your preferred room and get the right temp, right where you want it. It’s battery powered, so you can set it, then forget it’s even there.¹
| Pros for First Alert - Plug-in Electrochemical Explosive Gas and Carbon Monoxide Detector | |||
|---|---|---|---|
| There were no pros for this product— | Installation Ease, Connectivity, Overall Performance, Alarm Volume, Battery Life | Installation Ease, Connectivity, Overall Performance, Compatibility, Design | Overall Performance, Connectivity, Temperature Control, Setup Process, Accuracy |
| Cons for First Alert - Plug-in Electrochemical Explosive Gas and Carbon Monoxide Detector | |||
| There were no cons for this product— | Features, Night Light, Size | Features, Alarm Accuracy, Sensitivity | There were no cons for this product— |