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10-Year Battery Hardwired (with Battery Back-Up) Ionization Interconnected Smoke detector

First Alert 10-Year Battery Hardwired (with Battery Back-Up) Ionization Interconnected Smoke detector

4.7
620
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33 Questions
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does connection work on any exiisting hard wired smoke detector


It will work with either two- or three-wire connections (the third wire is to interconnect other First Alert alarms), but you may need to install the included harness. This will take about 5 minutes and you should kill power to your house to prevent electrocuting yourself.

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