The First Alert SMI100 Battery-Operated Smoke Alarm is available in a convenient two-pack. The SMI100 smoke detector is equipped with First Alert's Precision Detection advanced sensing technology and meets new industry standards. This battery-operated alarm is easy to install and the front access battery compartment makes for easy battery replacements.

• 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 detector 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 detector is working properly