Kidde 10 Year Worry-Free Smoke Detector, Lithium Battery Powered, Smoke Alarm, 3-Pack 21029885 - The Home Depot
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XS01-WR Wireless Interconnected Smoke Alarm
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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
SITERLINK Smoke Detectors Battery Operated, Smoke Alarm with Test-Silence Button, Photoelectric Sensor Fire Alarms Smoke Detectors with LED Lights, UL Listed Fire Alarm for House, GS528A, 4 Packs - Amazon.com