First Alert 9120B / SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, 10-Pack
$164.26
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Price: $164.26
(as of Sep 22, 2026 10:11:33 UTC – Details)
10 pack of BRK 9120B hardwired smoke alarm
Customers find the smoke detector to be of excellent quality, with one mentioning it’s a perfect replacement for the original. They appreciate its ease of installation, with one customer noting it plugs right into the spot.
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First Alert 9120B / SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, 10-Pack
$164.26
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