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

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

4.6
1726
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165 Questions
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Are all hard wired detectors three prong


there are details regarding the wiring in the instructions. The wiring colors matter. If you can not figure it out you should have a professional help you.

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We used model 9120b and it was the 3 prong hard wired.

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No, there are some 2 and others are 3.

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