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First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White

4.6 4.6 out of 5 stars 8,071 ratings
$35.27
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1 pack
Plug in Alarm with Digital Display
Alarm
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Purchase options and add-ons

Brand FIRST ALERT
Style Plug in Alarm with Digital Display
Power Source Corded Electric
Color White
Product Dimensions 1.7"D x 5"W x 3.4"H
Item Weight 0.6 Pounds
Alarm Audible
Sensor Type Electrochemical
Material Non-Precious Metal

About this item

  • Keep your family safe with this digital display, 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; Peak level feature displays the highest concentration of carbon monoxide measured
  • A loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels
  • 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
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
› See more product details

Customer ratings by feature

Easy to install
4.6 4.6
Battery life
4.5 4.5
Versatility
4.5 4.5
Easy to read
4.5 4.5
See all reviews

Customers usually keep this item

This product has fewer returns than average compared to similar products.

Frequently bought together

First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White
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First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
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First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
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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

Product guides and documents

User Guide (PDF)
User Manual (PDF)

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 CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White

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Product Description

Product Description

The FIRST ALERT CO615 dual power carbon monoxide plug in alarm alerts you to dangerous carbon monoxide. This carbon monoxide detector operates on a dual power system with battery backup for continuous monitoring, even in the event of a power outage. The backlit digital screen tells you at a glance what the carbon monoxide and power Levels Are. The Co monitor also features a convenient test and silence button and an end of life timer that lets you know when it is time to replace the unit.*ensure the outlet has power.*the battery is for back up only and is not intended to power the alarm for an Extended period of time in the absence of AC. *the alarm will light up the display briefly to indicate the unit is receiving power. *press and hold test button to ensure activation. Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you're in danger at first. That's why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can't see, smell or taste in the air.

The FIRST ALERT CO615 carbon monoxide alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. Installation is as simple as plugging it in to any wall outlet. Its easy-to-read backlit digital LED display gives you a clear read-out of current CO concentrations in parts per million. The alarm includes a battery back-up giving you peace of mind in a power outage. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. The unit monitors and re-alarms if carbon monoxide levels persist sounding a loud 85-decibel horn. An audible and visual low battery signal alerts you to replace the battery and an indicator alerts you when a battery has been removed. An end-of-life alarm of three chirps alerts you to replace the unit. Two AA batteries are included. 7-year limited warranty. UL listed. --Bree Norlander

What's in the Box
One carbon monoxide alarm, two AA batteries, and user's manual.

Amazon.com

Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you're in danger at first. That's why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can't see, smell or taste in the air.

The First Alert CO615 carbon monoxide alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. Installation is as simple as plugging it in to any wall outlet. Its easy-to-read backlit digital LED display gives you a clear read-out of current CO concentrations in parts per million. The alarm includes a battery back-up giving you peace of mind in a power outage. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. The unit monitors and re-alarms if carbon monoxide levels persist sounding a loud 85-decibel horn. An audible and visual low battery signal alerts you to replace the battery and an indicator alerts you when a battery has been removed. An end-of-life alarm of three chirps alerts you to replace the unit. Two AA batteries are included. 7-year limited warranty. UL listed. --Bree Norlander

What's in the Box
One carbon monoxide alarm, two AA batteries, and user's manual

WARNING:

CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Top Brand: FIRST ALERT

Highly Rated
100K+ customers rate items from this brand highly
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100K+ orders for this brand in past 3 months
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Price$35.27$28.99$46.99-13% $59.99
List: $69.21		$46.99
Delivery
Get it as soon as Friday, May 3
Get it as soon as Friday, May 3
Get it as soon as Friday, May 3
Get it as soon as Friday, May 3
Get it as soon as Friday, May 3
Customer Ratings
4.64.6 out of 5 stars8,071
4.64.6 out of 5 stars4,578
4.74.7 out of 5 stars62
4.64.6 out of 5 stars714
4.64.6 out of 5 stars837
Easy to install
4.6
4.6
4.7
4.6
4.7
Easy to read
4.5
4.6
5.0
4.4
4.6
Accuracy
4.4
4.4
—
4.3
4.2
Value for money
—
4.3
4.6
3.6
—
Sold By
Boom Bash LLC
Amazon.com
GEALDEN
Hembisen.
Chipai
power source
Corded Electric
Battery Powered
AC
Plug-and-play
AC
sensor type
Electrochemical
Electrochemical
Electrochemical
Electrochemical
Electrochemical
style
Plug in Alarm with Digital Display
Digital
—
3 Packs
2 PACK
alarm
Audible
Audible
Visual
Audible
Audible
weight
0.6 pounds
0.2 pounds
0.26 pounds
4.5 ounces
4.5 ounces

Important information

Legal Disclaimer

Item is new in box. No warranty provided by seller.

Bulb Voltage

120 volts

Customer reviews

4.6 out of 5 stars
4.6 out of 5
8,071 global ratings

Customers say

Customers like the performance, battery, and ease of use of the gas smoke fire alarm. For example, they mention it works well, has a backup battery, is easy to install and use, and is convenient to locate away from the wall outlet. That said, opinions are mixed on the quality and readability.

AI-generated from the text of customer reviews

609 customers mention551 positive58 negative

Customers are satisfied with the performance of the gas smoke fire alarm. They mention that it works well, has a self test that works great, and has no issues. Some say that the alarms seem to work ok, and that the monitor itself is great. They also say that it has s battery backup so it still works when the power goes out.

"Needed item for my rental unit. Works fine." Read more

"Seems like a good product. I hope I never need it" Read more

"works fine, just plug it in and go" Read more

"So far, the device is working as expected. Batteries came with purchase as a back up if electricity goes out." Read more

510 customers mention483 positive27 negative

Customers find the gas smoke fire alarm easy to install and use. They say it's simple to read and tops in accuracy. They also say it is convenient to locate away from the wall outlet and has a usable manual.

"...Quick delivery with easy simple to follow instructions make this a great bargain !!" Read more

"...Due to the clever design of this unit, the solution to that problem is simple - just pry back the little tabs that hold the wall wart captive, pop..." Read more

"Easy to install. Can’t tell about accuracy because no alarms for CO yet (and hopefully never)...." Read more

"This CO detector is easy to understand. It allows you to change the direction of the plug which is very helpful in keeping it upright...." Read more

226 customers mention218 positive8 negative

Customers appreciate the value of the gas smoke fire alarm. They say it's a wise purchase and a well-made product for the price. Customers also mention that it saves battery cost and is reliable.

"Best quality detector that's affordable that was purchased to replace existing units that were 10yrs old in my home...." Read more

"...Recommended, could save your life. Worth. Every. Cent." Read more

"...Good value for the safety you get." Read more

"I like this detector and feel it's priced right...." Read more

222 customers mention156 positive66 negative

Customers like the battery of the gas smoke fire alarm. They say it has a backup battery in case of power failure. Some like that it primarily uses electricity with a battery back up.

"...I like that they are primarily AC powered, but also battery backed, AND the AC adapter can store in back of unit, to hang on wall, or extend the cord..." Read more

"...Operates on AC with a battery backup (2 AAs)4) Batteries ARE included!!5) A biggie!..." Read more

"They don't last forever, but that's the way they are manufactured. This was a "new one" to replace the previous old one...." Read more

"So far, the device is working as expected. Batteries came with purchase as a back up if electricity goes out." Read more

131 customers mention117 positive14 negative

Customers like the outlet of the gas smoke fire alarm. They say it has the plug on a wire, so that you can put the detector somewhere other than the electrical outlet. Some say it comes with an extendable power cord so you can position the unit. Some customers like that it has a battery backup.

"...It has the plug on a wire, so that you can put the detector somewhere other than right in the outlet...." Read more

"...- Detachable plug with extension cord...." Read more

"...The attached plug and cord are designed so that you can install it directly into an outlet or hang it somewhere else and run the cord to the outlet...." Read more

"[[VIDEOID:mo1UOUK51YTF42O]]The best feature is the plug in design that lets you either plug directly into an outlet, or locate the unit further from..." Read more

122 customers mention97 positive25 negative

Customers like the appearance of the gas smoke fire alarm. They say it has a modern looking design, and has s nice display. Some appreciate the LCD screens and digital screen. They also appreciate the design options of direct plug-in or.

"This one went in the bedroom. Nice design with wall wart that is captive in the back of the unit so it can be "mounted" by simply plugging into a..." Read more

"...Small, clean design, First Alert products always seem to be top quality." Read more

"...This detector has a great design: the display shows you the highest level ever recorded and lets you reset to zero...." Read more

"...fingers crossed as to the rest. Oh. And it looks fine, and it arrived as per Hoyle and the price point seemed reasonable or better...." Read more

347 customers mention234 positive113 negative

Customers are mixed about the quality of the gas smoke fire alarm. Some mention that it's safe, trustworthy, and a great manufactured item to protect your home and family. However, others say that it wouldn't stop beeping no matter what they did.

"Best quality detector that's affordable that was purchased to replace existing units that were 10yrs old in my home...." Read more

"...we're used to the Kidde design and like the red LED, but it also seems more solid (the First Alert has the seemingly fragile/flimsy cover), and has..." Read more

"Easy to install. Can’t tell about accuracy because no alarms for CO yet (and hopefully never)...." Read more

"The alarm has never gone off and I still awake alive and breathing so I assume it is working...." Read more

121 customers mention74 positive47 negative

Customers are mixed about the readability of the gas smoke fire alarm. Some mention that the screen is easy to read and clear, while others say that the display is difficult to read in most lighting conditions, the information page was written in very small print, and the LED message is difficult.

"...The screen is easy to read and it has a test function (it's very loud)...." Read more

"...but when plugged in to a socket the whole device is low and becomes hard to read. Still, much better than older models with no display." Read more

"Easy to install , plug and play…. Gives reading better than just alarm" Read more

"...in the unit at ground level and install it much higher, so you can read it easily, and also have the unit sense readings higher off the ground...." Read more

Might have just saved our lives
5 Stars
Might have just saved our lives
I bought two of these after another cheaper carbon monoxide detector had alarmed in the middle of the night. I had read some reviews of the other carbon monoxide detector having false alarms and convinced myself it was probably a false alarm but I opened windows to air out the house.I got these two days ago and they alarmed the first night. I opened the windows and deduced that it was probably my tankless water heater which was recently installed and failed inspection. It is scheduled to be brought up to code this week.To prove my theory I made sure the central heat was off for a day and we hadn't used the clothes dryer for a few days and I put one of these detectors in the laundry room where the tankless water heater is installed. We have one of those large jacuzzi style baths in the master bathroom (hence the need to have the tankless) and we took a bath last night. When we were done the alarm was going off. I had done some minimal research before doing this test and knew that too high of a level (12,800 ppm) can kill you instantly after just 2 or 3 breaths. I had read that 400+ can be lethal. Wikipedia states 800 ppm will cause dizziness, nausea, and convulsions within 45 min and you will be insensible within 2 hours and 1600 ppm can kill you in 2 hours. So I went downstairs to see what the reading was.I held my breath and went in. 875ppm is what it read. I called 911 and the firemen came.My wife, 2 year old, and 2 month old were upstairs and in a room with the windows wide open. They came in and took their readings. They said they are not allowed to work in an environment where the levels are above 30 ppm without respirators. The windows had been open for 15 minutes and they were still getting readings over 70.Later, we compared what their professional monitor said to what the my 2nd First Alert Carbon monoxide detector was reading (remember I bought two of these). Their reading matched exactly what this unit displayed. So you can trust these devices.Please trust your device. Thats what you bought it for. Call 911. Open windows or get out of there. The long term affects of Carbon Monoxide exposure can cause heart problems, learning disabilities, and many other terrible things. I am now worried about what this has been doing to my family over the last 4 months since the water heater was installed. Like I said I have a 2 month old....I have posted a picture of the unit reading the max value from last night.
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Top reviews from the United States

Amazon Customer
5.0 out of 5 stars Good product
Reviewed in the United States on April 17, 2024
Size: Pack of 3Style: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
Needed item for my rental unit. Works fine.
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Geno405
5.0 out of 5 stars Top notch product
Reviewed in the United States on February 12, 2024
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
Best quality detector that's affordable that was purchased to replace existing units that were 10yrs old in my home. Placed at various places in home now offer peace of mind. Units are tested periodically and hopefully as durable as my past Units which were made by the same manufacturer. Build quality appears good with alarm that will definitely get your attention ! Quick delivery with easy simple to follow instructions make this a great bargain !!
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Eric Nordin
5.0 out of 5 stars No false alarms so far
Reviewed in the United States on December 1, 2023
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
This one went in the bedroom. Nice design with wall wart that is captive in the back of the unit so it can be "mounted" by simply plugging into a wall receptacle if one is available. In our case, the only available receptacle is split with one half of the receptacle being turned on and off with the switch for the overhead lights. Due to the clever design of this unit, the solution to that problem is simple - just pry back the little tabs that hold the wall wart captive, pop it out, and plug it into the power strip that occupies the unswitched half of the wall receptacle and powers the clock radio and bedside lamp. Rather than putting anchors in the wallboard to mount the CO detector, I just set it on the floor and stood it upright leaning against the wall.

Side note - when I first plugged it in , I noticed it chirping occasionally. That chirping reminded me that I had not yet installed the two AA backup batteries. I took care of that and no more chirp. Tested the detector with the test button. it's LOUD! I'm pretty sure this will wake me if there's ever a high CO problem. It might even wake the neighbors too!
3 people found this helpful
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Golfnotpro
4.0 out of 5 stars Easy to install
Reviewed in the United States on October 5, 2023
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
Easy to install. Can’t tell about accuracy because no alarms for CO yet (and hopefully never). I like the display but when plugged in to a socket the whole device is low and becomes hard to read. Still, much better than older models with no display.
5 people found this helpful
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Dinah Mays
5.0 out of 5 stars Safety
Reviewed in the United States on April 10, 2024
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
Seems like a good product. I hope I never need it
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Pamela G.
5.0 out of 5 stars Easy to read plug-in CO detector
Reviewed in the United States on April 17, 2024
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
This CO detector is easy to understand. It allows you to change the direction of the plug which is very helpful in keeping it upright. Most importantly, the blue light in the display is not too bright as to disturb the darkness when lights are out.
One person found this helpful
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HackOfAllTrades
5.0 out of 5 stars Still works, years later. Still highly rated by that consumer magazine.
Reviewed in the United States on February 10, 2024
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
We bought a few of these years ago. They still work. I like that they are primarily AC powered, but also battery backed, AND the AC adapter can store in back of unit, to hang on wall, or extend the cord, to mount higher on wall, or when outlet is behind furniture, etc. I recently searched for 'top rated CO detectors, and this same model is still among the top rated in the magazine reviews.
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grey
5.0 out of 5 stars Worked to save us TWICE! Lasted 6+ years
Reviewed in the United States on April 14, 2024
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
We bought 2 of these for different rooms on January 19, 2017.

The one in the front room alerted to evacuate twice in those years, one going off long long long before the apartment building knew about the problem! And even after performing so well—you’d think alerting that long would use the alarm up—it still lasted until today, April 14, 2024.

Super simple to set up and hang (and I am disabled so I was really worried about that), simple to test, and check. The only hard part about it was finding an outlet that was 6 feet from other stuff; sometimes it seems like every outlet is in use for something else.
One person found this helpful
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Top reviews from other countries

Amazon Customer
5.0 out of 5 stars They work
Reviewed in Canada on January 8, 2023
Size: Pack of 3Style: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
I own a condo townhouse and on the 24th of December 2022 the fire man came to my door after they were called to my area by another home owner whose carbon monoxide was going off. The outlet to my outside gas furnace pipe was blocked with snow. They cleared the snow away checked my monoxide fixtures and told me I need all new ones. I bought the package of 3 as the picture shows and plugged them in. They have a small light that shows they are on and working. I strongly suggest that anyone who does not have carbon monoxide alarms buy a package of these immediately. You can test them just by pressing a small button. Again, I repeat again if you do not have carbon monoxide alarms in your dwelling get these. They work great.
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L B C
5.0 out of 5 stars Simple to use and understand
Reviewed in Canada on January 11, 2019
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
It can be installed on a lower plug or higher up the wall out of reach of children or at a hight you can read without getting down on your knees with the power plug that can be taken out the back of the unit.It is simple to read and test and has backup batteries.
One person found this helpful
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David Edward Simmonds
1.0 out of 5 stars utterly useless, sold on amazon as a plug in alarm ...
Reviewed in the United Kingdom on December 16, 2014
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
utterly useless, sold on amazon as a plug in alarm suitable for U.K market, plug in not compatible with british wall sockets. needs returning to the U.S.A.
6 people found this helpful
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Gen_Grant WoTs
5.0 out of 5 stars It is the law in Ontario so keep your family safe.
Reviewed in Canada on August 31, 2022
Size: Pack of 3Style: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
After my one older CO2 monitoring devices died after 9 years it was time to replace and add a few more. Great deal and very easy to install and see the display. Stay safe and watch out for the invisible killer.
One person found this helpful
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KFielding
4.0 out of 5 stars Four Stars
Reviewed in Canada on June 18, 2018
Size: 1 packStyle: Plug in Alarm with Digital DisplayPattern Name: AlarmVerified Purchase
as described works well
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