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First Alert 10-Year Battery 2-Pack Battery-operated Photoelectric Sensor Smoke Detector

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10-Year battery eliminates battery replacements
Photoelectric sensor detects smoke from smoldering fire
Easy mounting bracket for effortless installation on a wall or ceiling

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Combining premium smoke detection with a sleek, compact design, the First Alert P1010 atom photoelectric smoke alarm with 10-year battery uses an ultra-reliable photoelectric sensor to detect smoke from smoldering fires while keeping false alarms to a minimum. A built-in 10-year 3V lithium-ion battery provides continuous power with no need to ever worry about changing batteries for the lifetime of the alarm. It's manufactured using 52% less resin and 76% less plastic than a standard alarm. The easy mounting system allows you to effortlessly install the detector on a wall or ceiling. A loud 85-decibel siren sounds if smoke is detected, a convenient test/silence button lets you easily check alarm function and mute false alarms, and an end-of-life signal lets you know when it's time to replace the unit.

10-Year battery eliminates battery replacements
Photoelectric sensor detects smoke from smoldering fire
Easy mounting bracket for effortless installation on a wall or ceiling
Battery-operated unit provides continuous monitoring even if there's a power failure
Alarm also features loud 85-decibel alarm, easy mounting bracket, a single test/silence button, and an end-of-life signal so you know when to replace the unit
Advanced micro design with maximum protection
Single button test/silence to ensure your alarm is working properly
End of life signal alerts you when alarm needs to be replaced
10-Year limited warranty