Kidde 10 Year Worry-Free Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alarm and Ambient Light Ring 21029893 - The Home Depot
First Alert Brk 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
AC Hardwired Operated Carbon Monoxide Alarm KN-COB-IC | Kidde
First Alert Hard-Wired w/Battery Back-up Electrochemical/Ionization Smoke and Carbon Monoxide Detector - Walmart.com
First Alert Hard-Wired Photoelectric Smoke and Carbon Monoxide Alarm | Wayfair