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⚠️ Stay plugged in, stay protected — safety that never sleeps!
The First Alert CO606 plug-in carbon monoxide detector combines cutting-edge electrochemical sensor technology with a reliable 9V battery backup, ensuring continuous, accurate CO monitoring even during power outages. Its compact design fits any standard outlet, while an 85-decibel alarm delivers unmistakable alerts. Simple one-button operation and a 7-year warranty make it the smart choice for millennial professionals prioritizing home safety and peace of mind.











| Alarm | Carbon Monoxide |
| Asin | B000ND74XA |
| Best Sellers Rank | #95 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #2 in Carbon Monoxide Detectors |
| Brand | First Alert |
| Built In Media | Alarm, Battery |
| Color | White |
| Compatible Devices | Standalone Wall Outlet |
| Customer Reviews | 4.7 4.7 out of 5 stars (23,082) 4.7 out of 5 stars |
| Enclosure Material | Plastic |
| Global Trade Identification Number | 00029054000682 |
| Item Dimensions D X W X H | 1.38"D x 5"W x 3.4"H |
| Item Type Name | CO Alarm |
| Item Weight | 4.2 ounces |
| Manufacturer | First Alert |
| Manufacturer Warranty Description | 7-Year Limited Warranty |
| Mfr Part Number | FATCO605 |
| Model Number | CO606 |
| Number Of Items | 1 |
| Operating Humidity | 10-95% RH |
| Power Source | Corded Electric |
| Product Style | Plug in Alarm with Battery Backup |
| Sensor Type | Electrochemical |
| Unit Count | 1 Count |
| Upc | 029054000682 |
| Upper Temperature Rating | 105 °F |
User
Very good product
Hasn't rang, havent died. It works.
User
Peace of mind
Replaced 10 year old alarms with these plug ins. Easy to install and fit against the wall. No fuss with plugging in and backup battery. Small and portable if needed to change outlets. Can't go wrong.
User
Good enough!
Run of the mill Carbon Monoxide Detector for a good price. No need to look any further.
User
As per my research This is a UL Certified it meets US safety standards
Read this if you want to save your time reading the too much info in the manual. Its overwhelming. This kind of stuff there should be a separate manual that features only the important instruction.- first and foremost 4 star only coz I wanted to buy the 3 pcs pack but good thing Ive read some comments with same complaints that they bought 3 pcs but they received only 1 pc. That must be a hassle and inconvenient to raise a complaint so I just bought 2 separate item and I am planning to buy another 2.- REASON WHY I BOUGHT THIS BECAUSE IVE READ: that First Alert is a reputable brand known for fire and CO safety products. Battery Backup: Works during power outages essential for 24/7 protection.Easy to install, no hardwiring needed.And the most important is it is "UL Certified" it Meets safety standards set by Underwriters Laboratories. Compared to other co detectors in amazon. These certifications mean the CO detector:•Has passed rigorous, standardized safety tests•Will reliably detect dangerous levels of carbon monoxide•Won’t give false alarms or miss actual dangerAnd when you buy this whether u like it or not you have to put the battery first and plug it. Coz if you dont put the battery and just plug it directly there will be a chirp sound every 30 seconds or so, and I found out thats an indication you need to install the battery. My bad I did not read the manual coz it overwhelms me a lot coz its too much to read for a supposed to be direct instructions only.So I tested my 2 first alert and it works. And you have to test it at least once a week. How I know this really works? I dont know I just have to trust the brand. And not wishing to have CO leak in our house. But this will bring us peace of mind knowing we have a CO detector at home esp so many sad cases about co leak in the house and people die. BE CAREFUL Y'ALL!
User
Easy to install and works as it should.
Easy to install and works as it should.
User
They officially worked
We officially had one of these go off in our house today. It took us by surprise and honestly at first we assumed one broke or was malfunctioning, but we moved another one and the same room and after a couple minutes, that one also went off. We called the fire department and once they came in, their sensors immediately went off. These did their job. I’m so glad I purchased these, and I’m about to buy another pack of 3 for more placements around the house.
User
I trust First Alert
Price was good, I trust first alert’s reliability, gives me a piece of mind, easy to use just plugs in.
User
Good CO alarm.
Good quality CO alarm. Very easy to install.
Trustpilot
2 months ago
1 month ago