First Alert Carbon Monoxide Alarm

Keep your family safe from dangerous carbon monoxide fumes — even in a power outage. The First Alert Carbon Monoxide Alarm runs on AC power, but provides battery backup in case the electricity goes out. Ultra reliable, it features a single test/silence button that tests alarm functions and silences unwanted alarms.

Plug-in with battery back-up, works during power outages One button to silence or test alarm functions Low battery silence quiets low battery alert without affecting alarm operation Covers only one wall outlet Loud 85-decibel alarm Low battery warning End of alarm life timer alarm chirps when it is time to replace, should be replaced every 5 years for maximum protection 3.3 in. height x 4.75 in. width x 2 in. depth, 0.43 pounds UL Listed Uses 2 AA batteries, included White