Gentex Hardwired Interconnected Photoelectric Smoke and CO Alarm with Dualink, Battery Backup and Relay Contacts GN-503F - The Home Depot
X-Sense 10 Years Battery Wireless Interconnected Combination Smoke and Carbon Monoxide Detector Alarm with Over 820 ft Transmission Range, Large Silence Button, XP01-W, 3-Pack - Amazon.com
First Alert SCO500B OLCOMBOV Wireless Interconnect Smoke and Carbon Monoxide Combo Alarm with Voice & Location, Frust Free - Walmart.com
First Alert Smoke and Carbon Monoxide Alarm, 3-pack | Costco
First Alert SCO7CN Combination Smoke and Carbon Monoxide Detector with Voice and Location, Battery Operated , White - Combination Smoke Carbon Monoxide Detectors - Amazon.com
Wireless Interconnect Carbon Monoxide Alarm With Voice Alert - CO511B
First Alert Battery Powered Wireless Interconnected Photoelectric Smoke and Carbon Monoxide Combo Alarm with Voice and Location, SCO500B- (Pack of 3) - Amazon.com
7 Best Smart Smoke Carbon Monoxide Detectors and Monitors of 2023 - Reviewed