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Gentex Part # 7139LS - Gentex Photoelectric Smoke Alarm With Plug-In Line Cord, Ada Strobe And Battery Backup - Smoke Detectors - Home Depot Pro
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FIRST ALERT CO605 Plug-in Battery Backup Carbon Monoxide Alarm and FIRST ALERT 9120B Smoke Detector Alarm | Hardwired with Backup Battery - Amazon.com
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