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First Alert Wireless Interconnect Talking Battery Operated Smoke and Carbon Monoxide Alarm - SCO501CN-3ST (1039839)
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Smoke And A Carbon Monoxide Alarm Mounted On The Ceiling Stock Photo, Picture and Royalty Free Image. Image 31967072.
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What is this sensor on my ceiling? The round one next to the smoke detector? Also, are smoke detectors also carbon monoxide detectors? : r/whatisthisthing
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