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First Alert

First Alert Carbon Monoxide Detector, Plug-In Alarm with Battery Backup, CO606, White, 1-Pack

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Sep 18
Order within 5 hours and 11 minutes
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Size: 1-Pack


Pattern Name: Alarm


Features

  • Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure
  • Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
  • Simple to use, with a single test/silence button; a loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels. Low battery signal mute, quiets low battery signal for upto 8 hours
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • 7 year limited warranty; Equipped with end of life signal chirp, so you know when its time to replace the unit for safety
  • All first alert CO alarms are rigorously tested to meet UL standards. Item length is 3.4 inches , item width is 1.38 inches and item height is 5 inches
  • Loud 85-decibel alarm sounds when CO levels are elevated

Description

The First Alert CO606 plug in carbon monoxide alarm with battery backup uses an electrochemical carbon monoxide sensor the most accurate technology available. The alarm easily plugs into any standard outlet with no additional mounting. Battery backup ensures alarm Works even during power outages. Mute button silences any nuisance alarms. Single button also tests alarm functions. Carbon monoxide alarm utilizes electrochemical sensor for increased accuracy. 7 year limited. Co alarm meets UL standards. There are no complicated displays or settings to navigate.

Brand: First Alert


Style: Plug in Alarm with Battery Backup


Power Source: Corded Electric


Color: White


Product Dimensions: 1.38"D x 5"W x 3.4"H


Item Weight: 4.2 Ounces


Alarm: Carbon Monoxide


Operating Humidity: 10-95% RH


Upper Temperature Rating: 105 Degrees Fahrenheit


Sensor Type: Electrochemical


Power Source: Corded Electric


Alarm: Carbon Monoxide


Sensor Type: Electrochemical


Operating Humidity: 10-95% RH


Upper Temperature Rating: 105 Degrees Fahrenheit


Product Style: Plug in Alarm with Battery Backup


Color: White


Item Dimensions D x W x H: 1.38"D x 5"W x 3.4"H


Item Weight: 4.2 Ounces


Enclosure Material: Plastic


Brand: First Alert


Model Number: CO606


Global Trade Identification Number: 82


Number of Items: 1


Manufacturer: First Alert


UPC: 029054000682


Mfr Part Number: FATCO605


Unit Count: 1.0 Count


Item Type Name: CO Alarm


Built-In Media: Alarm, Battery


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Tested fine right out of the box. Comes with a battery. Good Brand Name.
Size: 1-Pack Pattern Name: Alarm
The inclusion of a 9V battery right out of the box is a thoughtful touch. It gives me peace of mind knowing that the detector is ready to go, and the added battery backup ensures continuous protection even during power outages. I tested the detector when it arrived, and everything checked out. The ease of setup and the immediate functionality straight out of the box impressed me. The clear instructions provided made the installation process a breeze. As a consumer, the First Alert brand has always been synonymous with reliability and trust. This CO detector is no exception. It reinforces my confidence in the brand, and I appreciate the commitment to delivering high-quality products that prioritize safety... at a reasonable price. The white design seamlessly blends with my home decor, making it unobtrusive. The compact size ensures it doesn't take up much space. In summary, the First Alert CO605 Carbon Monoxide Detector is a stellar product that offers peace of mind, reliability, and ease of use. I highly recommend it to anyone in need of a top-notch carbon monoxide detector. Five stars – well deserved! ... show more
Reviewed in the United States on January 24, 2024 by Spencer Thomas
    • Necessary important easy task!
Size: 1-Pack Pattern Name: Alarm
My old units were 10 yrs old. Needed to be replaced and updated. This is not something to be ignored! Very easy to follow the directions for set up before plugging in. Takes a few minutes with indicator lights and beeps to keep you on track. Since I replaced them they've been trouble free. No problems. ... show more
Reviewed in the United States on May 24, 2026 by Kindle Customer
    • Perfect Product Design & Packaging
Size: 1-Pack Pattern Name: Alarm
These manufacturers know how to put a great product together and also how to package it. Our previous First Alert carbon monoxide detector from 2019 started chirping 5 chirps. A Google lookup indicated it was indicating the end of its service life. Wow! Pretty cool. So I stayed with First Alert for replacing our two units. Both arrived in under a day. And you know how most plastic wrapped items are difficult to open without slicing your fingers? Not these. The back of the package has a perforated pulldown tab to open easily. And they even provide a new battery. Totally legit Company placing the customer FIRST, for real. ... show more
Reviewed in the United States on May 19, 2026 by NMSailor
    • As per my research This is a UL Certified it meets US safety standards As per my research This is a UL Certified it meets US safety standards
Size: 1-Pack Pattern Name: Alarm
Review Image by Jem
Review Image by Jem
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 danger And 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! ... show more
Reviewed in the United States on March 31, 2025 Reviewed in the United States on March 31, 2025 by Jem
    • Great Price !
Size: 1-Pack Pattern Name: Alarm
Good Deal !
Reviewed in the United States on June 6, 2026 by Wiklanski Joseph
    • Great item
Size: 1-Pack Pattern Name: Alarm
A must for every home
Reviewed in the United States on June 28, 2026 by Jose
    • A must have safety item for hallway in home.
Size: 1-Pack Pattern Name: Alarm
I got this item to replace a 10 year old same model First Alert carbon monoxide detector. Old detector working fine but I decided to replace it. Fortunately I never had a CO leakage but I checked the test button every few weeks to ensure it was working.
Reviewed in the United States on May 9, 2026 by gene
    • Have used this exact model before, it lasts a good long time.
Size: 1-Pack Pattern Name: Alarm
I had this exact model 15+ years ago. Test it every 6 months, and when it failed the recent test, checked the 9V battery, which was still good. Ordered this exact one online, put the battery in and plugged it in, tested, working. These are easy to use, you don't really need instructions. Always good to have one in the garage and main area of your house. Hoping it lasts another decade plus. ... show more
Reviewed in the United States on June 2, 2026 by Anonymous

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