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, 2 Pack (Not Hardwired) -
First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector with LCD Display & 10-Year Battery, Over 820 ft Transmission Range, 1-Pack - Amazon.com
First Alert Part # SCO500B - First Alert Wireless Inter-Connectable Battery Operated Combination Smoke And Co Detector With Voice Alert - Combination Detectors - Home Depot Pro
First Alert SCO403 Carbon Monoxide and Smoke Detector (Combo Pack)
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