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First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
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Walmart
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First Alert Sealed 10-Year-Battery 2-In-1 Smoke And CO Alarm With Slim Profile, 6-3/4"L X 8-1/2"W X 1-1/2"H, White
Office Depot
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