First Alert 10-Year Battery Smoke Alarm and Battery-Operated Carbon Monoxide Alarm Value Pack Color:White Simply slide the hook over

Simply slide the hook over the door

Heavy-gauge rust-resistant steel mounting strap

effectiveness will not be diminished over time

available in 3 pack

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First Alert 10-Year Battery Smoke Alarm and Battery-Operated Carbon Monoxide Alarm Value Pack Color:White Simply slide the hook overComplies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency. 10 year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm Slim profile design is half the depth of a standard detector End of life warning lets you know when it's time to replace the alarm Test silence button for efficient testing to ensure the detector is working