Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display - Carbon Monoxide Detectors - Amazon.com
Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural & Explosive Gas Detector, AC-Plug-in with Battery Backup, Digital Display, White & Smoke Detector, Battery Powered with Test Button - Amazon.com
Nighthawk™ AC Plug-in Carbon Monoxide Alarm KN-COB-DP-LS | Kidde