First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
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SITERLINK Smoke Detectors Battery Operated, Smoke Alarm with Test-Silence Button, Photoelectric Sensor Fire Alarms Smoke Detectors with LED Lights, UL Listed Fire Alarm for House, GS528A, 2 Packs - Amazon.com