First Alert

Model # CO615

Internet # 202433879

Plug-In Carbon Monoxide Alarm with Digital Display and Battery Backup

$30.84 /each
  • Plugs into any standard 120V outlet
  • EZ view backlit digital display
  • Battery backup, batteries included



Model # CO615

Internet # 202433879

The First Alert CO615 Carbon Monoxide Alarm is an easy-to-install, UL-listed alarm that combines advanced technology with a user-friendly design. Symptoms of carbon monoxide poisoning are like the flu, and you might not even know you're in danger. That's why a carbon monoxide alarm is an excellent way to protect your family. It detects the CO you can't see, smell or taste in the air. This carbon monoxide alarm utilizes an electrochemical carbon monoxide sensor, the most accurate technology available. A single test/silence button, silences non-threatening alarms, low battery warnings and allows you to test the unit's functionality. It’s easy-to-read backlit digital LED display gives you a clear read-out of current CO concentrations in parts per million. A remote mute silences nuisance alarms by pressing any button on a standard household remote control (remote not included). Installation of the CO615 is as simple as plugging it in to any wall outlet and it comes with a plug-in cord, offering multiple placement options. The CO615 alarm includes a battery back-up, giving you peace of mind in a power outage. 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.

  • EZ view backlit digital carbon monoxide level display
  • Plug-in and protect
  • Battery operated backup
  • EZ access battery door
  • Mute button
  • Low battery signal mute
  • Electrochemical carbon monoxide sensor
  • End of alarm life timer
  • 2 AA batteries included
  • 7-year limited warranty
  • Meets UL2034 standard
  • America's most trusted brand in home safety

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Alarm Type 
Carbon Monoxide 
Alarm/Detector Features 
Digital display 
Battery Back-Up 
Commercial / Residential 
Commercial / Residential 
Connector/Contact Type 
Power Source 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 


Power Source: Battery
Alarm/Detector Features: Digital display
Brand: First Alert
Price: $30 - $40
Review Rating: 4 & Up
2 Questions0 Answers

Customer Questions & Answers

Plug-In Carbon Monoxide Alarm with Digital Display and Battery Backup
Plug-In Carbon Monoxide Alarm with Digital Display and Battery Backup

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Backlit ON when?

This question is from Plug-In Carbon Monoxide Alarm with Digital Display and Battery Backup
Asked by
san francisco
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September 13, 2015
The blue light that lights up the LCD, is it on all the time, or It only comes on when a button is pressed?
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I pulled my unit out of the recepeicle. When I plugged in back in, it beeps once every minute. Why?

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August 8, 2015
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Rated 4.1 out of 5 by 22 reviewers.
Rated 4.0 out of 5.0 by I needed a replacement When my old CO detector died, I did some research and found this one had good ratings. The unit was easy to set up and seems to function just as it is supposed to. Since it is plugged into an outlet close to the floor, it is difficult to read the display without crouching down to floor level. April 26, 2016
Rated 4.0 out of 5.0 by Does the job. Plugged it in and no issues. Tested the alarm and it's pretty loud. May 4, 2016
Rated 4.0 out of 5.0 by The end of life timer will scare you if it goes off in the middle of the night. I have this unit. Tonight a few minutes after midnight it decided that it had reached its "end of life" and started blaring for a few seconds every minute. I was just about to start evacuating the house when I saw "END" on the display. I understand the need to remind you to replace an aging unit, but it could be done with a single chirp like a smoke detector with a dying battery instead of multiple loud chirps that sound like an actual emergency alarm! April 19, 2016
Rated 5.0 out of 5.0 by Excellent CO Detector Excellent CO Detector. Many nice features. Excellent Consumer Reports review. April 26, 2016
Rated 4.0 out of 5.0 by This Could Save Your Life Everything worked as designed except for the mounting screws. March 30, 2016
Rated 5.0 out of 5.0 by Ideal Product for Purpse I like the compact appearance of this CO detector, and found it very easy to install: just plug it in and set it! A plus are the backup batteries. The written instructions appeared more complicated than the actual set-up of the product. I would have appreciated additional information on recommended placement of the device for optimum early detection of any CO gas. February 23, 2016
Rated 5.0 out of 5.0 by Great purchase! Good product so far - no maintenance, seems to be working fine. Easy test for verification everything is safe and cost was a big factor in my purchase. Thanks Home Depot! January 12, 2016
Rated 1.0 out of 5.0 by Went south after 14 months Beeped every 25 seconds after 14 months with a good battery . Moved to other location. Moved also to a different housing unit. Still no fix. November 22, 2015
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