We're sorry, this item is not
available in the selected combination.
Please select again.
The First Alert CO400 battery powered carbon monoxide detector with mute button is an easy-to-install, UL-listed alarm that combines advanced technology with a user-friendly design. Symptoms of carbon monoxide poisoning are like the flu, and you might not even know you're in danger. That's why a carbon monoxide alarm is an excellent way to protect your family. It detects the CO you can't see, smell or taste in the air. A single button tests alarm functions and mutes nuisance alarms. This alarm uses an electrochemical carbon monoxide sensor, which is the most accurate technology available. With battery backup, you will have peace of mind that the alarm will continue to work even when the power goes out. It's esthetically pleasing premium shape is ideal for placing in all visible location. The easy loading back access battery door allows you to quickly and easily change the alarms single 9-Volt battery. 5-year limited warranty. Meets UL standards and is code compliant.
|Assembled Depth (in.)||6.38 in||Assembled Height (in.)||8.56 in|
|Assembled Width (in.)||2.29 in|
|Alarm Type||Carbon Monoxide||Alarm/Detector Features||No Additional Features|
|Battery Back-Up||Yes||Commercial / Residential||Commercial / Residential|
|Connector/Contact Type||None||Electrical Product Type||Carbon Monoxide Detector|
|Certifications and Listings||1-UL Listed|
Standard Shipping includes delivery by small parcel service. Processing time varies by product.
If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.
Express Delivery from Store is available for items currently in stock at a The Home Depot store within a delivery ZIP code. A driver from a local store will deliver the item(s).
Outside Delivery: Service includes delivery to area outside the house which is accessible by delivery equipment.
Threshold Delivery: Service includes delivery across your first doorway or threshold (ie. garage, backyard, deck, first room of the home).