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Kidde 10-Year Worry Free Smoke & Carbon Monoxide Detector, Lithium Battery Powered with Photoelectric Sensor and Voice Alarm 21030866 - The Home Depot
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What is this rectangular object next to the smoke detector in my apartment?Thank you! : r/whatisthisthing
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First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated, 1 Pack, White - Combination Smoke Carbon Monoxide Detectors - Amazon.com
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Landlords support new Sask. regulations requiring CO detectors in all residential properties | CBC News
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