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 Lights & Voice Alerts - Walmart.com
First Alert Battery Operated 9V Electrochemical Carbon Monoxide Alarm (6-Pack) - Triple A Building Center
Battery Operated Carbon Monoxide Digital Display Alarm KN-COPP-B-LPM | Kidde
Kidde Smoke & Carbon Monoxide Detector with Voice Alerts, Battery Powered, Combination Smoke & CO Alarm - Amazon.com
Amazon.com: First Alert Carbon Monoxide Detector Alarm|No Outlet Required with Digital Display and Peak Memory, Battery Operated, CO410 , White : Everything Else