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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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What is the difference between 9120B and 9120BP smoke alarms?


I believe that the BP version comes with a mute button for some reason. Don't have this unit but have the B.

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