Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.
🏠 Stay safe, stay savvy — CO protection that’s always on guard!
The First Alert CO400 is a battery-powered carbon monoxide detector featuring a highly accurate electrochemical sensor with a 5-year lifespan. Its compact design requires no wiring, allowing flexible placement anywhere in your home. Equipped with an 85 dB alarm, end-of-life signal, and a 5-year limited warranty, it offers reliable, continuous CO monitoring—even during power outages—making it an essential safety upgrade for modern households.
| ASIN | B000N8OYXI |
| Alarm | Audible |
| Best Sellers Rank | #306 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Carbon Monoxide Detectors |
| Brand | First Alert |
| Built-In Media | Alarm; Mounting Bracket; User Manual; 9V Battery |
| Color | White |
| Customer Reviews | 4.6 out of 5 stars 23,029 Reviews |
| Enclosure Material | Multi |
| Global Trade Identification Number | 00029054000699 |
| Item Dimensions D x W x H | 1"D x 5"W x 3"H |
| Item Type Name | First Alert CO400FF Battery Powered Carbon Monoxide Alarm |
| Item Weight | 11.2 ounces |
| Manufacturer | First Alert |
| Manufacturer Contact Information | 1 (800) 323-9005. |
| Manufacturer Warranty Description | 5 Year Limited Warranty |
| Mfr Part Number | CO400 |
| Model Number | CO400 |
| Number of Items | 1 |
| Operating Humidity | 10-95% RH |
| Power Source | Battery Powered |
| Product Dimensions | 1"D x 5"W x 3"H |
| Product Style | Battery Powered |
| Sensor Type | Electrochemical |
| Style | Battery Powered |
| UPC | 029054000699 |
| Unit Count | 1 Count |
J**.
Simple, reliable, and essential for home safety
I recently purchased this First Alert CO400 detector to add another layer of safety to my home, and I’m very satisfied with the experience. What I appreciate most is the straightforward, battery-operated design. It was incredibly easy to set up—no hardwiring or complex installation required, which makes it perfect for placing exactly where you need it without worrying about electrical outlets. The unit feels sturdy and well-built, and the alarm is loud and impossible to miss. It provides great peace of mind, especially given how unobtrusive and reliable it has been since I installed it. For anyone looking for a no-fuss, effective way to monitor carbon monoxide levels in their living space, this is a solid, must-have product.
J**N
Great Carbon Monoxide Detector – Easy to Install and Reliable!
I bought two of the First Alert Carbon Monoxide Detectors (model CO400), and I’m very happy with them. They were super easy to install — no outlet needed since they run on batteries. I just mounted them on the wall, and they were ready to go in minutes.I like that the battery operation means I can place them anywhere in my home without worrying about finding a plug. The alarm is loud enough to hear clearly, and the design is compact and simple.It gives me peace of mind knowing my family is protected. Overall, great value, easy setup, and reliable safety product. Highly recommend!
H**E
Great Value for Peace of Mind
Great Value, easy to set up, peace of mind! Alarm is loud and indicator light functions well.
A**T
great value and easy to set up
GREAT PRODUCT .GOOD PRICE
K**R
Works great! Would buy again.
They work great. Love the test feature. Installed on each floor outside bedrooms. Easy installation. Easy to put in batteries.
J**A
Good product
Since I bought a gas stove I just thought I needed this and I'm glad I have it. Seems to be a good product thus far
M**A
Battery operated only
Works as expected. It does not plug in. Battery only. Wish I had read a little better, but good product if you only use batteries.
S**T
Good value
Good value
Trustpilot
2 days ago
3 weeks ago