Share this product
First Alert Battery-Operated Carbon Monoxide Detector in White | 1039721
This product ad may change over time
ShareFirst Alert Battery-Operated Carbon Monoxide Detector in White | 1039721
The First Alert CO400 carbon monoxide alarm uses an electrochemical sensor the most accurate technology available. The permanent sensor lasts up to 5 years. It is powered by a 9V replaceable battery giving you peace of mind even during power outages. The test/silence button …
The First Alert CO400 carbon monoxide alarm uses an electrochemical sensor the most accurate technology available. The permanent sensor lasts up to 5 years. It is powered by a 9V replaceable battery giving you peace of mind even during power outages. The test/silence button silences the alarm and allows you to test its functionality. The unit monitors and re alarms if carbon monoxide level persist sounding a loud 85 decibel horn. No installation is required and the attractive design allows the unit to be placed anywhere you need it. It includes an optional wall mount with no outlet required. An audible and visual battery signal alerts you to replace the battery. Pull down action chart has convenient guide on what to do if an alarm sounds. 5 Year limited warranty. UL listed. First Alert Battery-Operated Carbon Monoxide Detector in White | 1039721
$21.98
Visit Lowe's
Price History
Something went wrong. Please try again later.
User Reviews
5-star
63%
4-star
26%
3-star
0%
2-star
0%
1-star
11%
Loading reviews...
Mar 31, 2021Installed in my garage/shop/workout room and seems to be working just fine. Full review by walmart.com
Jan 20, 2021When I first ordered this item last year, it stated in was both, a smoke detector and a carbon dioxide detector. When I got them in the mail, they did not detect smoke. Full review by walmart.com
Mar 17, 2021Nice design; easy to install. Least expensive detector that I could find. I use it to replace an identical one that had its service life expired (5 years) per my local ordinances. Full review by walmart.com
Description
The First Alert CO400 carbon monoxide alarm uses an electrochemical sensor the most accurate technology available. The permanent sensor lasts up to 5 years. It is powered by a 9V replaceable battery giving you peace of mind even during power outages. The test/silence button silences the alarm and allows you to test its functionality. The unit monitors and re alarms if carbon monoxide level persist sounding a loud 85 decibel horn. No installation is required and the attractive design allows the unit to be placed anywhere you need it. It includes an optional wall mount with no outlet required. An audible and visual battery signal alerts you to replace the battery. Pull down action chart has convenient guide on what to do if an alarm sounds. 5 Year limited warranty. UL listed. First Alert Battery-Operated Carbon Monoxide Detector in White | 1039721
Price History
Something went wrong. Please try again later.
Tracking price
We added this to your collection and will notify you if the price dropsView collection
Sign in to see your saved products on any device and receive email
Sign InPrice tracking canceled
We removed this from your collectionView collection
Something went wrong. Please try again later.
Receive email and browser notifications if the price drops
Product added to your wishlist! View wishlist
Sign in to see your saved products on any device
Product removed from your wishlist! View wishlist
Sign in to see your saved products on any device
Something went wrong. Please try again later.
Product is added to compare already. Please refresh the page.
Product is not found in compare. Please refresh the page.
5 Products already added. Please delete existing selection to add this.
Feedback