FIRST ALERT Plug-In Carbon Monoxide Detector with Battery Backup, (Pack of 3), CO605
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FIRST ALERT Plug-In Carbon Monoxide Detector with Battery Backup, (Pack of 3), CO605

4.7/5
Product ID: 46456100
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Details

  • Brand
    FIRST ALERT
  • Style
    Plug in Alarm
  • Power Source
    Battery
  • Color
    White
  • Product Dimensions
    1.38"D x 5"W x
  • Item Weight
    8 ounces
📏Compact 1.38"D x 5"W x 3.4"H design
📢85dB loud alarm for instant alerts
🔋Battery backup for power-outage safety

Description

⚠️ Stay plugged in, stay protected—because your peace of mind can’t wait!

  • PLUG PROTECT - Easy plug-in design fits any standard outlet—no wiring needed
  • MULTI ROOM COVERAGE - 3-pack lets you safeguard every floor and bedroom for total home protection
  • PRECISION DETECTION - Advanced electrochemical sensor delivers accurate CO level readings anywhere in the room
  • UNINTERRUPTED SAFETY - Battery backup ensures continuous CO monitoring even during power failures
  • LONG TERM RELIABILITY - 7-year limited warranty with end-of-life signal means you’re always protected and never caught off guard

The FIRST ALERT Plug-In Carbon Monoxide Detector (3-pack) combines advanced electrochemical sensing with a reliable battery backup to provide continuous, accurate CO detection. Its compact plug-in design fits any standard outlet, delivering loud 85dB alerts to keep your home safe across multiple rooms. Backed by a 7-year warranty and end-of-life signal, this detector ensures long-lasting protection and peace of mind.

Specifications

BrandFIRST ALERT
StylePlug in Alarm with Battery Backup
Power SourceBattery Powered
ColorWhite
Product Dimensions1.38"D x 5"W x 3.4"H
Item Weight8 ounces
AlarmAudible
Sensor TypeElectrochemical
Global Trade Identification Number00029054015778
Number of Items3
ManufacturerFirst Alert / BRK Brands, Inc.
UPC029054015778
Part NumberCO605
Country of OriginMexico
Item model numberCO605
Batteries2 AA batteries required. (included)
Is Discontinued By ManufacturerNo
Size(Pack of 3)
PatternAlarm
Item Package Quantity1
Included ComponentsSmoke Detector, batteries, mount, user's manual
Batteries Included?Yes
Batteries Required?Yes
Battery Cell TypeAlkaline
Warranty Description7 Year Limited

Have a Question? See What Others Asked

why does mine chirp intertmittently
Will the unit work without a bettery in it?
Does the monitor plug directly into the wall socket or is there an electric cord?
At what level of co does this alarm sound? Thank you for your time.

Reviews

4.7

All from verified purchases

N**I

Amazing product works good

Good alarm works well. It is pretty loud but it is supposed to so it will wake you up at night. Very easy to use all you have to do is plug into a wall. Easy to mount. Easy to read. I felt so much safer after buying this. Would 100% recommend.

A**G

Works.

It's what I needed and it works. Simple.

R**O

Seven years

Just bought two more of these. The first one I got lasted exactly 7 years and three months. Well worth 25 bucks for seven years protection! Never had to replace the battery end never had any false alarms, until the end-of-life (5 chirps)

S**H

Functional & low-cost.

Low-cost option for rental units I have. No complaints.

B**0

Working Good

Working Good so far. Quality is good, and it is easy to use. The position of the plug makes it mount flush against my wall. Carbon monoxide is very dangerous, so these are a must have for any household.

J**R

Came fast and easy to plug in, but how is anyone suppose to know if it works??

Needed it quickly and Amazon came through. Effectiveness? Honestly, the only way to tell if it functions is if you have a CO issue, right? It does allow you to test the alarm, but not its ability to detect CO. Idea: include a sample of CO (you can buy this on Amazon but it’s ridiculously costly) so that it is doing what it is supposed to do.

A**!

So glad I had this!

Today, I had a carbon monoxide leak coming from my basement which is three levels down from where I had this carbon monoxide detector plugged in. This thing perform amazingly!! It detected a leak coming from my basement. All the way up stairs into my bedroom! I have wired detectors too. But I was so impressed with this plug in and the distance that it was able to detect the carbon monoxide! What a life saver! I am buying two more as back ups. If I could give it 10 stars I would. I was not compensated nor am I recieving any rewards/perks etc. This is my own personal experience with the product. And this all happened today, 3/31/25. I am going to buy this brand from now on. I can not state enough how grateful I am for this little plug in backup. Buy it!!!

P**G

Easy to install

Great product!!!

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

First Alert Plug In Carbon Monoxide Detector With Battery Backup | Desertcart UNITED STATES