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BRK Hardwired (with Battery Back-Up) Dual Sensor Interconnected Smoke detector 6 -Pack

First Alert BRK Hardwired (with Battery Back-Up) Dual Sensor Interconnected Smoke detector 6 -Pack

4.6
70
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3 Questions
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how long do the battery's last?


Hi, the backup battery life will depend on the usage of the battery that is used during power outages. The unit will alert when the battery needs to be replaced.

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