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USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels - Walmart.com
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SITERWELL 2.4G WiFi Smoke Detector Carbon Monoxide Detector Combo, 2 in 1 Smart Fire and CO Alarm Detector, Voice Alert, Replaceable Battery, Auto-Check, Conforms to UL 217 & UL 2034 Standards, 1 Pack
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First Alert 10-Year Battery-Operated Smart Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
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Google Nest Protect 2nd Generation Smart Smoke and Carbon Monoxide (CO) Battery Alarm, White | Canadian Tire
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