🚨 Don’t just detect CO—dominate safety with First Alert’s smartest alarm yet!
The First Alert CO400 is a compact, battery-powered carbon monoxide alarm featuring an advanced electrochemical sensor for highly accurate detection. Designed for easy installation and use, it includes a silence/test button, low battery warning, and a 5-year end-of-life timer. With a 5-year limited warranty and included batteries, it offers reliable, long-term protection against carbon monoxide hazards.
| Brand | First Alert |
| Style | Simple |
| Power Source | Battery Powered |
| Colour | White |
| Product Dimensions | 2.5D x 12.7W x 7.6H Centimeters |
| Item Weight | 0.45 Pounds |
| Alarm | Audible |
| Operating Humidity | 10-95% RH |
| Sensor Type | Electrochemical |
| Global Trade Identification Number | 00029054000699 |
| Material | Multi |
| Number of Items | 1 |
| Manufacturer | Jarden Safety |
| UPC | 029054000699 |
| Department | Electronics |
| Item model number | CO400 |
| ASIN | B000N8OYXI |
A**R
Excellent and easy to install
I purchased this alarm to install in the upstairs hallway between bedrooms. It was very easy to install and works perfectly and provides the added security I required. I was surprised and happy at how quickly the parcel arrived!
G**R
Saved my life
Installed as soon as they arrived to replace older models that the batteries had expired in (7 year batteries and no maintenance or replacement option). These do have batteries that have to be or can be replaced. The 2nd night after installation, the detector I had mounted in my bedroom (installed all 6 throughout my house) went off around 2:00 AM and awakened me. I immediately shut my gas furnace down and called a HVAC company. They found a crack in my heat exchanger as well as issue with the flue or exhaust pipe that was allowing CO to enter my home. Had I not replaced my CO detectors when I did, I wouldn't be writing this review now. Well worth my investment!! Easy installation and had all 6 up and operating in less than 30 minutes as well as reasonably priced. Purchased this pack of 6 for less that the other 2 I had bought 7 years ago.
K**
3 pack
Great deal for rentals. Good quality.
R**K
Good price on CO2 detector
Price and delivery was good. Tested good, hope I never need them!
G**.
Replacement Product.
This was a replacement item, after the original (over 5 years old) beeped to indicate it had to be replaced. Tested it & it’s working fine. Even fit right into the original screws, so happy that no wall repair/modification was necessary.
Trustpilot
1 month ago
3 days ago
