First Alert Plug-In with Battery Back-up Electrochemical Carbon Monoxide Alarm(CO615)

Item no: 5208962 | 029054856180
390  Estimated 

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  • Power Type: Plug-In with Battery Back-up
  • Sensor Type: Electrochemical
  • Product Type: Carbon Monoxide Alarm
  • Color Family: White
  • Test and or Reset Button: Yes
  • Detects Smoke: No
  • Volts: 120 volts
  • Indoor and Outdoor: Indoor
  • Number in Package: 1 pk
  • Detects Carbon Monoxide: Yes
  • UL Listed: Yes
  • CSA Listed: No
  • Front-access battery compartment.
  • Memory chip stores highest levels permanently
  • Silencer button alarms if levels persist
  • Self testing systems alerts if malfunctions
  • 3 indicator light
  • Low battery warning
  • End of life timer
  • 7 year limited warranty

This item can be shipped to your home. Or pickup this item at your local Ace Store for FREE*.

*Items shipped from our warehouse to stores in Alaska and Hawaii will receive a 70% shipping discount.

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We want you to be fully satisfied with every item that you purchase from If you are not satisfied with an item that you have purchased (subject to the return exceptions below), you may return the item up to thirty days after the original purchase date to receive a refund (less shipping, handling and other charges). We recommend that you make returns of online purchases to an Ace retail store near you which will issue you a refund. If you do not have an Ace retail store near you, please contact a Customer Service Specialist by calling 1-866-290-5334 for complete return instructions. Please refer to our Return Instructions for more information about returning a purchase.

The item must be returned in good condition, in original packaging (whenever possible), with all paperwork (including product instructions or information and your packing slip), and parts and accessories to ensure full credit for purchase price (not including shipping and handling, gift-wrap, or additional charges). After 30 days from the original purchase date, please contact the manufacturer directly.

Return Exceptions:

30 Day Return Policy does not include Gift Cards, Magnolia Home Paint or gas-powered outdoor equipment.

  • Gift Cards cannot be returned for any reason.

  • Because each Magnolia Home Paint product is made to order, undamaged paint products are non-refundable. Magnolia Home Paint products purchased on cannot be returned for any reason. If your Magnolia Home Paint product arrives incorrect or damaged, please contact a Customer Service Specialist by calling 1-866-290-5334.

  • Gas-Powered Outdoor Equipment (such as tillers, edgers, mowers, string trimmers, blowers, tractors, generators, chainsaws, snow blowers, as well as all other gas powered chore equipment) may be returned within 30 days of the date of purchase, with original receipt, provided that it is in like-new condition. Gas-Powered Outdoor Equipment cannot be returned once gas or oil has been put in it, even if the equipment has been drained of these materials.

Please note that if your Gas-Powered Outdoor Equipment is defective or is not functioning properly, its service and warranty issues will be handled through the authorized service center. See Return Instructions for more information.

What people are saying

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by PowerReviews
First Alert® CO Detector (CO615)

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

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(1 of 1 customers found this review helpful)



By Doreen

from Durham, NC

About Me Casual Do-It-Yourselfer


  • Accurate
  • Compact
  • Discreet
  • Easy To Set Up


    Best Uses

    • Early Warning
    • Safety

    Comments about First Alert® CO Detector (CO615):

    I bought this product as soon as I moved into my home. Home is 19 years old. I disconnected all ADT monitors so I bought this CO2 monitor since there are 2 gas fireplaces, gas stove and gas heat. 3 months after moving in, alarm goes off 5am one morning. Called gas company and they identified a leak coming from the valve in one of the fireplaces. Can't imagine what would have happened without this product! Thanks!

    • Primary use:
    • Personal

    (12 of 16 customers found this review helpful)


    TV remote controler

    By Jeff

    from Vermont

    About Me Casual Do-It-Yourselfer


    • Sensitive


    • Remote control

    Best Uses

    • Bedrooms
    • Living Room

    Comments about First Alert® CO Detector (CO615):

    It was brought up that a fire department responded to a CO alarm recently and discovered that the First Alert CO detector model CO615 can be activated by a TV remote that is pointed at the unit and the channel up/down or volume up/down button held for five seconds. This is apparently a feature to test or silence the unit. This is the first any of us were aware of this, however it is noted in the 615 owners manual.

    Displaying reviews 1-2

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