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Kidde Firex Hardwired Smoke Detector with Photoelectric Sensor and 9-Volt Battery Backup 21029883 - The Home Depot
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Kidde Firex Smoke Detector, Hardwired with 9-Volt Battery Backup & Front Load Battery Door, Adapters Included, Smoke Alarm 21029886 - The Home Depot
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Kidde Hardwired Smoke Detector with 9-Volt Battery Backup, Photoelectric Smoke Alarm, Battery Included - Amazon.com
21006379 - Kidde 21006379 - i12080 Hard-Wired Interconnect Ionization Smoke Alarm (120v) w/ Safety Light and 9v Battery Backup
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