P12040 is a 120VAC powered photoelectric smoke alarm with 9V battery back up. This advanced smoke alarm has the ability to function as a stand-alone unit or in an interconnected system.
Kidde P12040 Interconnect Photoelectric Smoke Alarm - 21006371 for
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Kidde P12040 Smoke Alarm User Guide
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Kidde P12040 Smoke Alarm User Guide
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Customer reviews: Kidde 21006371 p12040 Hardwire With
Kidde P12040 Smoke Alarm User Guide
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Kidde Fire Systems Fire Detectors, Smoke Detectors