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BRK Hardwired (with Battery Back-Up) Ionization Smoke detector

First Alert BRK Hardwired (with Battery Back-Up) Ionization Smoke detector

4.6
1735
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165 Questions
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Battery changed & unit continue to beep. Green light flicker during the beep.


I would check all your units. If they installed with the three wire hookup, it may be another unit that needs a battery

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