Kidde 10-Year Worry-Free Hardwired Combination Smoke and Carbon Monoxide Detector with Battery Backup and Voice Alarm (3-Pack) 21030259 - The Home Depot
First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated, 1 Pack, White - Combination Smoke Carbon Monoxide Detectors - Amazon.com
Kidde Firex Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alarm and Front Load Battery Door (2-Pack) 21007624 - The Home Depot
Kidde Firex Battery Powered Combination Smoke and Carbon Monoxide Detector with Voice Alerts 21032090 - The Home Depot