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10-year sealed battery dual-sensor smoke alarm provides ultimate protection by combining ionization and photoelectric technologies to detect both fast-flaming and slow-smoldering fires. Precision Detection advanced sensing helps reduce nuisance alarms from cooking while still delivering early warning of real fire emergencies. Sealed lithium power cell removes the need for battery changes or low-battery chirps, and a single test/silence button simplifies operation and maintenance.
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10-year sealed battery dual-sensor smoke alarm provides ultimate protection by combining ionization and photoelectric technologies to detect both fast-flaming and slow-smoldering fires. Precision Detection advanced sensing helps reduce nuisance alarms from cooking while still delivering early warning of real fire emergencies. Sealed lithium power cell removes the need for battery changes or low-battery chirps, and a single test/silence button simplifies operation and maintenance.

The right temp in just the right spot - Meet the Nest Temperature Sensor (2nd gen). Now it’s easy to manage hot and cold spots throughout your home. Just put it in your preferred room and get the right temp, right where you want it. It’s battery powered, so you can set it, then forget it’s even there.¹
| Pros for First Alert - Battery-Powered Ionization/Photoelectric Dual Sensor Smoke Detector 1 pk | |||
|---|---|---|---|
| There were no pros for this product— | Installation Ease, Connectivity, Overall Performance, Alarm Volume, Battery Life | Installation Ease, Connectivity, Overall Performance, Compatibility, Design | Overall Performance, Connectivity, Temperature Control, Setup Process, Accuracy |
| Cons for First Alert - Battery-Powered Ionization/Photoelectric Dual Sensor Smoke Detector 1 pk | |||
| There were no cons for this product— | Features, Night Light, Size | Features, Alarm Accuracy, Sensitivity | There were no cons for this product— |