FIRST ALERT Plug-In Carbon Monoxide Detector, 3 Count (Pack of 1), CO600 , White, 6.75 x 6.9 x 9 inches - Amazon.com
First Alert CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 White 1039746 - Best Buy
First Alert Battery-operated Smart Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
First Alert 10-Year Battery-Operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Kidde Battery Operated Smoke & Carbon Monoxide Detector with LED Light & Voice Alert - Walmart.com
Kidde 10 Year Worry-Free Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alarm and Ambient Light Ring 21029893 - The Home Depot