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First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White

4.7 4.7 out of 5 stars 17,811 ratings
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Amazon's Choice in Carbon Monoxide Detectors by FIRST ALERT

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1-Pack
Alarm

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About this item

  • 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 it’s 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
See more product details

Customer ratings by feature

Easy to install
4.7 4.7
Easy to use
4.6 4.6
Easy to read
4.6 4.6
Accuracy
4.4 4.4

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First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
FIRST ALERT First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
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Price-38% $28.99
List:$46.99
-19% $109.99
List:$135.99
$45.99$44.32-5% $26.99
List:$28.34
$26.00
Delivery
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Customer Ratings
Easy to install
4.7
4.5
5.0
4.7
4.6
4.7
Easy to read
4.6
4.5
4.8
5.0
4.6
5.0
Accuracy
4.4
4.4
4.8
4.6
4.4
Easy to use
4.6
4.2
4.7
4.8
Value for money
4.3
4.6
4.7
Sold By
Amazon.com
Amazon.com
KH Alert
GEALDEN
SITERWELL
Colorwell
power source
Corded Electric
Battery Powered
Corded Electric
AC
Battery Powered
AC
sensor type
Electrochemical
Electrochemical
Electrochemical
Electrochemical
Electrochemical
Photoelectric
style
Plug in Alarm with Battery Backup
simple
modern
Standard Model
Decibel,Safety
alarm
Carbon Monoxide
Audible
Audible
Visual
Audible
Visual
weight
0.26 pounds
0.01 ounces
0.26 pounds

From the manufacturer

First Alert
What is carbon monoxide?

Common sources of Carbon Monoxide

Furniture

Dryer Vent

Chimney

What does the beep mean?

4 beeps and a pause

1 beep every minute

5 beeps every minute

Emergency: Carbon monoxide has been detected. Move to fresh air and call 911.

Low battery: It's time to replace the batteries in your carbon monoxide alarm.

End of life: It's time to replace your carbon monoxide alarm.

Recommended alarm placement

Looking for specific info?

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here [PDF ]

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First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White


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Product guides and documents

Product Description

The First Alert CO605 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.

Important information

Bulb Voltage

120 volts

Customer reviews

4.7 out of 5 stars
4.7 out of 5
17,811 global ratings

Customers say

Customers like the value, ease of installation, size and performance of the home lighting accessory. For example, they mention it's a cheap lifesaver, works well and that it fits snugly into an outlet. That said, they're satisfied with safety, and quality. That's saying, they have issues with noise and disagree on battery life.

AI-generated from the text of customer reviews

600 customers mention535 positive65 negative

Customers like the performance of the home lighting accessory. They say it works well, has been working for years with no issues, and the initial test was successful. Some customers also mention that the detectors may work well, but all came with dead batteries. Overall, most are satisfied with the performance and recommend the product.

"...in the brand, and I appreciate the commitment to delivering high-quality products that prioritize safety... at a reasonable price...." Read more

"The product was easy to install. Test alert worked fine...." Read more

"Used in bedrooms; directions were easy to follow; they tested fine;" Read more

"Works great" Read more

559 customers mention529 positive30 negative

Customers find the installation process of the First Alert plug-in alarm to be easy. They mention that the directions are easy to understand, and the installation was as easy as plugging in. Customers also say that the detector just plugs into a wall and can be used in any room.

"...The ease of setup and the immediate functionality straight out of the box impressed me...." Read more

"The product was easy to install. Test alert worked fine...." Read more

"Used in bedrooms; directions were easy to follow; they tested fine;" Read more

"...This is extremely easy to install. The previous one has lasted many years. You can test the sound; it is very loud...." Read more

310 customers mention310 positive0 negative

Customers are satisfied with the value of the product. They mention it's a great detector for the price, and a cheap lifesaver.

"...delivering high-quality products that prioritize safety... at a reasonable price...." Read more

"...They do not have infinite lifetimes, but they are inexpensive and last 5-7 years...." Read more

"Great price for a nice carbon monoxide detector! I especially like that it doesn’t need to be mounted up high on wall." Read more

"...Best price for a good brand, for a must have safety item." Read more

214 customers mention170 positive44 negative

Customers like the quality of the carbon monoxide detector. They say it is reliable, easy to test, and provides extra peace of mind. Customers also say the unit is solid, easy-to-use, and lasts long. They mention that it arrived on time, in good condition, and with a good battery. Overall, customers are satisfied with the quality and value of the product.

"...Alert CO605 Carbon Monoxide Detector is a stellar product that offers peace of mind, reliability, and ease of use...." Read more

"...This is extremely easy to install. The previous one has lasted many years. You can test the sound; it is very loud...." Read more

"we got two of these for our home; they are worth the peace of mind and easy to use." Read more

"...Hopefully we’ll never need them but the extra peace of mind well worth it." Read more

89 customers mention84 positive5 negative

Customers are satisfied with the safety of the product. They mention that it's a great life saver, easy to install, and helps keep them and their family safe. The added battery backup ensures continuous protection even during power outages. Customers also say that the product could save their life and gives them peace of mind.

"...that the detector is ready to go, and the added battery backup ensures continuous protection even during power outages...." Read more

"...Carbon Monoxide Detectors are not fun or exciting, but important for your safety. I bought two because I am selling my home...." Read more

"...I was amazed at how accurately this detects CO and monitors it for my family's safety. This should be a must have in every home." Read more

"...I ordered a new one and no problems. Keeps your family safe." Read more

65 customers mention51 positive14 negative

Customers like the size of the home lighting accessory. For example, they mention it's compact, convenient, and easy to operate. Some say that it'll fit snugly into an outlet and allow them to use the other socket. That said, most are happy with the size and functionality of the product.

"...The compact size ensures it doesn't take up much space...." Read more

"...These are much slimmer and more compact than the older model we had...." Read more

"Compact enough to travel with. Easy to use." Read more

"...technically takes up the top space of the outlet as well and it sits pretty wide. U may be able to..." Read more

298 customers mention168 positive130 negative

Customers are mixed about the battery life of the home lighting accessory. Some mention that it has a backup battery for when power is out, while others say that it only lasted four months.

"...AC power with battery backup for extra safety is great. Covered every bedroom in our home without breaking the bank. Came with batteries as a plus...." Read more

"...They do not have infinite lifetimes, but they are inexpensive and last 5-7 years...." Read more

"...Somethings I guess you just have to trust. Easy install. Battery backup." Read more

"Safety first! Carbon Monoxide Detectors are not fun or exciting, but important for your safety. I bought two because I am selling my home...." Read more

126 customers mention26 positive100 negative

Customers are dissatisfied with the noise produced by the product. They mention that it chirps all day and is very loud when it goes off. Some customers also mention that the product uses a battery backup and will chirpat when the battery is dead. Overall, customers are not happy with the product's noise level.

"...annoying thing is when they finally die, they make periodic sequences of 4 very loud chirps...." Read more

"...Except it wasn't. Two days later, the random beeping resumed - and we had to peel our dog off the ceiling...." Read more

"...(9V) was "dead", I found that out after installing it, then the unit chirping...." Read more

"...the alarm (they recommend you do this weekly), and the sound is definitely loud enough to wake sleepers...." Read more

Easy to use. Already a year old. Nothing fancy.
4 Stars
Easy to use. Already a year old. Nothing fancy.
These were a good value but as you can see from the pics, they are already over a year old on arrival. I didn't have any issues at all putting the batteries in. Would have given five stars if they weren't a year old. All three were dated August 2019. Same manufacturers lot.
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Mine
1.0 out of 5 stars Disappointed :( :( :(
Reviewed in Canada on March 8, 2019
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