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Kidde Firex Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO Detector 21029915 - The Home Depot
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Kidde 10 Year Worry-Free Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alarm and Ambient Light Ring 21029893 - The Home Depot
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Kidde Plug-In Smart Carbon Monoxide Detector & Indoor Air Quality Monitor with Battery Backup - Walmart.com
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First Alert 10-Year Battery-Operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
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