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Interconnected Smoke and Carbon Monoxide Detector, HATHEPHS 10-Year Battery RF Interlinked Smoke and CO Alarm with Large Silence Button, Two Installation Ways, 3-Pack - Yahoo Shopping
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First Alert SA521CN-3ST Wireless Interconnect Hardwired Smoke Alarm
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AEGISLINK Smoke and Carbon Monoxide Detector 10-Year Lifespan with Replaceable Battery, Photoelectric Fire Alarm and Electrochemical CO Alarm with Test/Silence Button, SC200, 1-Pack - Amazon.com
