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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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First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup - Walmart.com
First Alert Sco501cn Smoke & Carbon Monoxide Detector With Voice Location And Wireless Interconnectivity : Target
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