Kidde KN-COB-IC Hardwired Carbon Monoxide Detector with 9V Backup

Overview

The Kidde KN-COB-IC is a hardwired carbon monoxide detector that combines precise electrochemical sensing with practical power options. It runs on standard 120V AC power and includes a built-in 9-volt alkaline battery backup, ensuring continued monitoring even when the lights go out. This model is designed to interoperate with other Kidde alarms on a single wiring network, helping you create a coordinated safety system across your home.

What you’ll notice

When carbon monoxide is detected, an 85-decibel alarm sounds to alert occupants, accompanied by a flashing red LED. A steady green LED confirms the unit is receiving power, giving a quick visual cue at a glance.

Key benefits at a glance

• Electrochemical sensor technology detects CO gas with sensitivity and responsiveness.
• Powered by 120V AC with a 9-volt alkaline battery backup (included) for continuous protection.
• Audible 85-decibel alarm paired with red LED indicators signals CO presence.
• Green LED shows active power, so you can quickly verify operation.
• Interconnection capability: connect up to 24 Kidde alarms on one wiring network for multi-room alerts.
• Smart interconnect behavior: distinct alarm patterns when linked to a Kidde smoke alarm in alarm mode.
• End-of-life indicator chirp helps you know when replacement is needed.
• 10-Year Limited Manufacturer’s Warranty on the alarm portion (battery performance not covered by the warranty).
• UL 2034 compliant for added assurance of performance and safety standards.

Real-life use and placement tips

Place a CO detector on every level of your home and near sleeping areas to help ensure early warning. Keep units at least 15 feet away from cooking or heating appliances to reduce false alarms. Regular testing keeps the detector ready to respond, and planning for replacement every 5–7 years helps you benefit from the latest technology.

Maintenance and care

• Test the alarm monthly to confirm proper operation.
• Respect the end-of-life chirp as a signal to replace the unit.
• Follow local codes and installation guidelines for best results.

Whether you’re upgrading an existing system or adding another layer of protection, this model provides practical, reliable monitoring with flexible power options and easy interconnection. It’s designed to be a friendly, non-intrusive part of a thoughtful home safety setup.