Price: $34.99 - $26.98
(as of Nov 13, 2025 15:35:48 UTC – Details)
The First Alert SM210 10-Year Sealed Battery Smoke Alarm with Slim Profile Design is equipped with First Alert’s Precision Detection advance sensing technology and meets new industry standards. This slim profile smoke alarm is easy to install, and the 10-year sealed battery means no battery replacements are required.
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.
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 alarm
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 say
Customers find the smoke alarm easy to install and appreciate its 10-year sealed battery feature. However, the functionality receives mixed feedback, with some reporting it works well while others experience random alarms. Moreover, the lifespan is concerning, with customers noting it only lasts 18 months and the 10-year lifetime claim is considered a joke. Additionally, the smoke detector receives mixed reviews, with some describing it as decent while others find it poor quality, and customers report frequent false alarms.
