#end-of-life warning

First Alert BRK Smoke Alarm Review – Hardwire Detector with 10-Year Battery Backup (3-Pack)

The First Alert BRK SMI105-AC 3-pack smoke alarm delivers hardwire dependability with a sealed 10-year battery backup — a practical safety upgrade for any home. I spent two weeks testing these across three rooms, and here's what actually matters for aging-in-place households.