First Alert 2-Pack Battery-Operated Carbon Monoxide Detector

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Product details

Management number	205189910	Release Date	2025/10/22	List Price	$126.40	Model Number	205189910
Category	Electrical Fire Safety & Alarms Carbon Monoxide Detectors

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.

Battery operated to provide continuous monitoring of CO levels, even during a power failure
Advanced electrochemical sensor detects carbon monoxide levels no matter where the detector is installed
A loud 85-decibel alarm sounds when CO levels reach dangerous levels
CO alarms should be placed on every level and in every bedroom of the home
5-Year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit
Tested to meet UL standards