Kidde KN-COPP-B-LP (KN-COPP-B-LS) (900-0230) Nighthawk with Digital Display Battery Operated Carbon Monoxide Alarm

Kidde KN-COP-DP-LS (KN-COP-DP-B) (900-0278) Nighthawk with Digital Display AC Plug-in Operated Carbon Monoxide Alarm (Upgraded to COPD)

Kidde KN-COPP-B (900-0146) (KN-COPP-B-LPM) Electrochemical Sensor Battery Operated Carbon Monoxide Alarm

BRK Electronics First Alert CO600B 120V AC Plug-in Electrochemical Carbon Monoxide (CO) Alarm

Kidde 21006462 KN-COB-DP2 (6pcs bulk) AC Powered, Plug-In with Battery Backup Electrochemical Sensor Carbon Monoxide Alarm

BRK Electronics First Alert CO605B 120V AC/DC Plug-in with 2 AA Batteries Backup Electrochemical Carbon Monoxide (CO) Alarm

BRK Electronics First Alert CO250B6CP 9V DC Battery Operated Tamper Resistant Electrochemical Carbon Monoxide (CO) Alarm - Contractor 6-Pack

BRK Electronics First Alert CO250LB 9V DC Lithium Battery Operated Tamper Resistant Electrochemical Carbon Monoxide (CO) Alarm

BRK Electronics First Alert CO615B 120V AC/DC Plug-in with 2 AA Batteries Backup Electrochemical Carbon Monoxide (CO) Alarm with Digital Display

BRK Electronics First Alert CO511B OneLink Wireless Battery CO Alarm with Voice (Upgraded to SMCO500V)

Kidde KN-COU-B Kidde Ultra-Sensitive Battery Powered Carbon Monoxide Monitor

Kidde 21006973 (6pcs bulk) AC Powered, Plug-In Carbon Monoxide Alarm

Kidde 21008908 (6pcs bulk) Battery Operated Carbon Monoxide Alarm (Replaced by 21025788)