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X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector with LCD Display & 10-Year Battery, Over 820 ft Transmission Range, 3-Pack - Amazon.com
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Kidde Firex Hardwired Combination Smoke and Carbon Monoxide Detector with Adapters and Voice Alarm 21029718 - The Home Depot
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First Alert Part # SCO500B - First Alert Wireless Inter-Connectable Battery Operated Combination Smoke And Co Detector With Voice Alert - Combination Detectors - Home Depot Pro
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