First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Install Additional Nest smart smoke and CO2 detector – Battery Operated – PNW Home Improvements
2 Pack 10 Year Battery Operated Smoke and Carbon Monoxide Detector, Portable Fire Co Alarm for Home and Kitchen (White) - Amazon.com
First Alert ZCOMBO-G (1044807) Z-Wave enabled Battery Operated Combination Photoelectric Smoke and Carbon Monoxide Alarm | Smoke Alert
First Alert 10-Year Battery-Operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Kidde 10-Year Worry Free Smoke & Carbon Monoxide Detector, Lithium Battery Powered with Voice Alarm, 2-Pack 21029621 - The Home Depot