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Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot
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Kidde 07581 - 120 volt Hush Smoke Alarm with Slide Load Front Battery Backup (9V Battery Included) (21007581 i4618) - Yahoo Shopping
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Kidde Firex Smoke Detector, Hardwired with Battery Backup & Front-Load Battery Door, Smoke Alarm 21029877 - The Home Depot
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