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Kidde Smoke Detector, Hardwired Smoke Alarm with 9-Volt Battery Backup, Test-Reset Button, Interconnect Capability - Amazon.com
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Need Help: Replacing Smoke Alarm (should I wire the red wire which might connect with another brand of smoke alarm?) : r/electricians
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Kidde Quick Connect Wiring Adapter for Hardwired Smoke and Combination Detectors 21032239 - The Home Depot
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Went to change a smoke detector and noticed what I thought was a ground wire beeping my tester. What's going on? New home owner here. : r/askanelectrician
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