

🛡️ Stay ahead of danger with smart, wireless CO detection that speaks your home's language.
The First Alert BRK CO511 is a battery-powered carbon monoxide detector featuring an electrochemical sensor for precise CO detection. It wirelessly interconnects with compatible alarms to create a comprehensive home safety network. Voice alerts clearly announce the location of danger, enhancing response time. With up to 8760 hours (1 year) of battery life and easy one-button testing and silencing, it offers trusted, hassle-free protection for modern homes.










| ASIN | B0064S9JCW |
| Alarm | Audible |
| Average Battery Life | 8760 Hours |
| Batteries | 2 AA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Best Sellers Rank | #56,596 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #118 in Carbon Monoxide Detectors |
| Brand | First Alert |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (168) |
| Date First Available | February 24, 2010 |
| Description Pile | Alkaline |
| Global Trade Identification Number | 00029054002914 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 10.4 ounces |
| Item model number | CO511B |
| Manufacturer | First Alert / BRK Brands, Inc. |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | CO511B |
| Power Source | Battery Powered |
| Product Dimensions | 2.38"D x 5.13"W x 5.13"H |
| Sensor Type | Electrochemical |
| Size | (Pack of 1) |
| Style | Batterypowered |
| UPC | 029054002914 |
| Warranty Description | Carbon Monoxide Alarm |
L**A
Quick delivery
Purchased this before so bought again when it was needed. Small, attractive and easy to install.
J**.
Great
Super easy setup. No false alarms. Feel safer already. Solid five stars.
D**N
These are great!
These are great alarms. All four of them synced together instantly and were very easy to install. They are loud and I particularly like the digital readout. Good product and a good price.
D**K
Fits old brackets
Nice quality
J**R
It works
Does the job
M**A
Recommended by a friend.
My friend’s husband recommended this brand as being reliable. He has used them for years. I installed them without a problem and the two units synced easily.
R**Y
Terrible Product, Terrible Company
I installed 14 of these in my house in 2020. FIVE of them died within four years, and a sixth just died on me. TONS of false alarms. Batteries last two or three years. I've had it. I'm ripping them all out and replacing them. WAY TOO EXPENSIVE FOR THE VERY SHORT LIFE AND ALL THE NUISANCE ALARMS (especially if you have sleeping babies in the house).
R**.
It works well
I used this to replace an older one that had expired. No problem with installation.
Trustpilot
2 months ago
4 days ago