Kidde KN-COSM-IB (900-0114A) (KN-COSM-IBA) (21006377N) AC Wire-In with Battery Back-Up Combination Carbon Monoxide & Smoke Alarm with Ionization Sensor (Upgraded to CUACFEX-V + 20-9003)

Kidde KN-COPE-I (21007624) (KN-COPE-IC) AC Wire-In with Battery Back-Up Combination Carbon Monoxide & Smoke Alarm with Photoelectric Sensor (Upgraded to CUACFEX-V + 20-9003)

Kidde KN-COB-IC (900-0120) (21006406) AC Wire-In Carbon Monoxide Alarm w/ Alkaline Battery Back-up

BRK Electronics First Alert CO5120BN 120V AC/DC Hardwired with 9V Battery Backup Electrochemical Carbon Monoxide (CO) Alarm

Kidde KN-COPP-3 (900-0076) (21005294) AC Powered, Plug-In Carbon Monoxide Alarm

Kidde KN-COB-DP2 (21025761) (900-0263) Carbon Monoxide Detector, AC Plug-In with Battery Back-Up

Kidde KN-COB-LCB-A (900-0193) (KN-COB-DP2) (21006137) AC Powered, Plug-In with Battery Backup Electrochemical Sensor Carbon Monoxide Alarm

Kidde KN-COB-B (KN-COB-B-LPM) (9CO5-02) Battery Operated Carbon Monoxide Alarm (Replaced by KN-COB-LP2)

BRK Electronics First Alert CO250B 9V DC Battery Operated Tamper Resistant Electrochemical Carbon Monoxide (CO) Alarm

Kidde KN-COB-LP2 (9CO5-LP2) Battery Operated Carbon Monoxide Alarm

Kidde KN-COSM-B (900-0102) (KN-COSM-BA) (21005296) Battery Operated Combination Carbon Monoxide & Smoke Alarm - Contractor Packaging (Upgraded to 30CUDR-V)

Kidde KN-COEG-3 (900-0113) AC Powered, Plug-In with Battery Backup Electrochemical Sensor Carbon Monoxide Alarm

Kidde KN-COB-DP-LS (900-0235) (21007329) Nighthawk AC Plug-in Operated Carbon Monoxide Alarm (Upgraded to KN-COB-DP2)

Kidde KN-COP-IC (900-0121) (21006407) AC Wire-In Carbon Monoxide Alarm Battery Back-Up and Digital Display

BRK Electronics First Alert CO400B 9V DC Battery Operated Electrochemical Carbon Monoxide (CO) Alarm

Kidde KN-COB-B-LS (900-0233) Nighthawk Battery Operated Carbon Monoxide Alarm