First Alert Battery Smoke Alarm

Price: null - $55.99
(as of Sep 07, 2026 18:43:08 UTC – Details)


The First Alert SMI100 Battery-Operated Smoke Alarm is equipped with First Alert’s Precision Detection advanced sensing technology and meets new industry standards. This battery-operated smoke 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 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
Customers find the smoke alarm to be a quality product that’s easy to install and provides peace of mind for home protection. They appreciate its loud alarm and ease of use, with one customer noting it takes less than 10 minutes to set up. The battery life receives mixed feedback – while it comes with batteries, some report they only last 4 months. The noise level also gets mixed reviews, with some customers reporting random beeps that are difficult to track.