Kidde Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup, 3 LED Indicators

Price: $35.15 - $49.99
(as of Feb 16, 2026 04:05:33 UTC – Details)


The Kidde Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup, 3 LED Indicators, model KN-COB-IC, is a carbon monoxide detector that uses electrochemical sensor technology to detect carbon monoxide. The CO detector is powered by a 120-volt power source with a 9-volt alkaline battery backup located in the back of the unit, providing coverage during a power failure. When carbon monoxide is detected, an 85-decibel alarm will sound and a red LED will flash. A green LED indicates that the alarm is receiving power. Install a smoke detector and carbon monoxide detector on every level of your home and near bedrooms to help keep your family safe from fire and poisonous gas. 10-Year Limited Manufacturer’s Warranty on the Alarm Only: The warranty begins when the CO alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced. The 10-year limited warranty is not a battery performance claim. Meets requirements of UL 2034.
Electrochemical sensor technology detects CO gas
Carbon monoxide alarm operates on a 120V wired power source with a 9-Volt alkaline battery backup (included)
An 85-decibel alarm sounds & a red LED indicates the CO detector is sensing poisonous carbon monoxide gas
Green LED indicates power to the carbon monoxide detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
Interconnection capability: allows you to connect up to 24 Kidde smoke, heat, or CO alarms, with the possibly it interconnect 6 strobe lights or relay modules
The unit will chirp at the end of the alarm life, indicating that the alarm is in need of replacement
10-Year Limited Manufacturer’s Warranty on the Alarm Only: warranty begins when the CO alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced. The 10-Year limited warranty is not a battery performance claim.