First Alert BRK 3120B Hardwired Smoke Detector with Photoelectric and Ionization with Battery Backup
$68.99
Price: $68.99
(as of Feb 03, 2026 17:15:29 UTC – Details)
Dual Photoelectric and Ionization sensing technologies for optimal sensing of smoke particles produced in both flaming and smoldering fires.
Two Latching Features
Two Silence Features
Optipath 360 Technology
2 AA Batteries Included; 10 Year Limited Warranty
Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast-burning and smoldering fires
Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
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First Alert BRK 3120B Hardwired Smoke Detector with Photoelectric and Ionization with Battery Backup
$68.99