First Alert 10-Year Battery 2-in 1 Smoke and Carbon Monoxide Alarm with Slim Profile Design

First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install detector
10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
End-of-life warning lets you know when it's time to replace the alarm
Slim profile design is half the depth of a standard alarm

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