First Alert SMI100, Battery-Operated Smoke Alarm, 2-Pack

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, Battery-operated alarm allows for easy installation and maintenance, Front access battery compartment makes for easy battery replacements, End-of-life warning lets you know when it’s time to replace the alarm, Test/silence button for efficient testing to ensure alarm is working properly