This product has been Discontinued
An image of the front of the KN-COPP-B carbon monoxide alarm.

Carbon Monoxide Alarm, Battery Operated with Digital Display

KN-COPP-B

The Kidde 900-0146 Carbon Monoxide Alarm is the only battery-operated alarm that includes a backlight digital display feature. This key feature adds an advanced level of protection that you have come to expect in a Kidde manufactured product. This easy to install alarm has been carefully designed and tested to detect CO concentration in a residential environment.

  • Digital Display
    Displays the level of carbon monoxide the unit is sensing. The unit updates this reading every 15 seconds.

  • Peak Level Memory
    Displays the highest CO concentration measured since the last reset.

  • Large Backlit Display
    Easy-to-read, even in low light conditions.

  • Front Load Battery Door
    Change battery without removing alarm from the wall.

Helpful Resources
Helpful Resources

Click on the video to learn more about how to install your Kidde Carbon Monoxide alarm.

Download iconProduct Data Sheet
Download iconUser Guide
Thumbnail of the video "How to Protect Your Home Against Carbon Monoxide"Play button
Kidde's comprehensive suite of products, including smoke and carbon monoxide alarms, and fire extinguishers. Number 1 home safety fire brand badge at the top.

Why Kidde

As North America's #1 home fire safety brand,* Kidde has been working to help make your home the safest it can be for more than 100 years. Now, our latest smoke alarms and combination smoke + carbon monoxide (CO) alarms are bringing you the next level of fire and CO safety. Help protect what matters most in your life with features like cutting edge technology that send fast alerts to give your family more time to get out safely. And enhanced sensing technology that reduces false alarms often caused by cooking.

*Based on total household installations as of December 2023.