X-Sense 2-in-1 Smoke and Carbon Monoxide Detector Alarm (Not Hardwired), 10-Year Battery-Operated Dual Sensor Fire & CO Alarm, Compliant with UL 217 & UL 2034 Standards, SC06 - Amazon.com
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CHZHVAN Smoke Detector Carbon Monoxide Detector Combo, Dual Sensor Combination Smoke and CO Alarm Replaceable Battery Fire Alarm with LCD Display & Test Button for Travel, Home (Not Hardwired) - Amazon.com
Kidde Firex Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alarm and Front Load Battery Door 21029888 - The Home Depot
Carbon Monoxide Detector CO Smoke Dual Sensor with Digital Concentration Display Test Button Fire Alarm LED Low Battery Signal
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Smoke and Carbon Monoxide Detector Battery Powered Dual Sensor Combination Smoke & CO Alarm with LCD Screen, Led Indicator and Loud Sound Alert, Complies with UL 217 & UL 2034 Standards - Amazon.com
First Alert 10-Year Battery 2-Pack Battery-operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com