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Customer Ratings & Reviews

Customer reviews

Rating 4.6 out of 5 stars with 48 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.7 out of 5 stars

  • Quality

    Rating 4.7 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

Pros mentioned filter

Cons mentioned filter

96%would recommend to a friend

Customers are saying

Customers regard the CO615 Carbon Monoxide Plug-In Alarm with Battery Backup as easy to use and install. The battery backup feature is a frequently praised aspect of its design. Positive feedback also highlights the alarm's quality and aesthetically pleasing appearance. Overall, customers express satisfaction with the product's ease of use and functionality.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 2 Showing 21-40 of 48 reviews
  • Rated 5 out of 5 stars

    Good value for the price

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love how this just plugs in and gives peace of mind. Good value for the prices

    I would recommend this to a friend
  • Pros mentioned:
    Battery backup

    Rated 5 out of 5 stars

    Peep, peep, peep!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Peep,peep,peep! I knew it was time to replace our carbon monoxide detector. First Alert has always been a reliable device for both smoke and monoxide detectors. True to its reputation we purchased First Alert and feel secure. I highly recommend First Alert.

    I would recommend this to a friend
  • Pros mentioned:
    Battery backup, Ease of use

    Rated 4 out of 5 stars

    Good price

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good price. Easy to install. Comes with batteries

    I would recommend this to a friend
  • Pros mentioned:
    Battery backup

    Rated 5 out of 5 stars

    CO Detector

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to install the backup battery. The plug and detector can be separated a few feet, and the detector mounted on the wall if desired. No alarms so far thankfully.

    I would recommend this to a friend
  • Pros mentioned:
    Quality

    Rated 5 out of 5 stars

    Excellent and Necessary Purchase for All!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very competitive price at Best Buy. Highest quality. Unpack and plug in....as easy as that. Informative display is very helpful.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Works well

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works well, easily to use. I haven't died of carbon monoxide, yet. Good buy.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    owner

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It works. I like the plug in feature (no batteries) last two i had batteries failed

    I would recommend this to a friend
  • Pros mentioned:
    Battery backup

    Rated 5 out of 5 stars

    carbon monoxide detector

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    we feel safer knowing it's in place. we have one in basement and one on first floor.

    I would recommend this to a friend
  • Pros mentioned:
    Quality

    Rated 5 out of 5 stars

    Great value

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great item. I have three, put this one in the basement.

    I would recommend this to a friend
  • Pros mentioned:
    Battery backup

    Rated 5 out of 5 stars

    Was what I needed

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    We needed a carbon monoxide detector and that is what we got! I do like the battery back up feature!

    I would recommend this to a friend
  • Pros mentioned:
    Quality

    Rated 5 out of 5 stars

    Good

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good product.recommended for others buyer to buy it

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Quality+affordable+peace of mind

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Nice features for the price. Easy programming and set-up.

    I would recommend this to a friend
  • Pros mentioned:
    Design

    Rated 4 out of 5 stars

    So far so good

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy plug in design with. Seems to be operating good, thankfully it hasn't went off

    I would recommend this to a friend
  • Pros mentioned:
    Quality

    Rated 5 out of 5 stars

    Carbon monoxide

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Excellent quality and a good price. Highly recommended

    I would recommend this to a friend
  • Pros mentioned:
    Battery backup

    Rated 5 out of 5 stars

    Excellent value.

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to install with battery backup. Ordered and sent to my home.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    great product

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    easy to install just pull in, works wonderful beautiful product,

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    First Alert Carbon Monoxide Plug-In Alarm

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I trust the First Alert brand to provide me peace of mind in knowing that this product will not fail. The last unit I bought reached the end of its life and notified me that it was time to replace it. This is definitely worth the investment.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great Buy

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I had an earlier model of this First Alert detector and was pleased with the simplicity of it so bought the same thing again. It is an inexpensive safety item to own. This is easy to test yourself.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Necessary safety monitor

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a must have in the bedroom level along with a fire extinguisher in each kitchen. The installation could not be easier because my carbon detector is plugged into an electrical receptacle.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Carbon monoxide detectors

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I returned this item. It’s not really a plug in. It has to be mounted. Too much work for me.

    No, I would not recommend this to a friend
    • Brand response from FirstAlertProductExpert
      Posted .

      Thank you for your feedback, Margaret. We apologize for any inconvenience. We’re here to help. We would like to talk to you further to better understand your experience. Please don’t hesitate to reach out to us at First Alert at 1 (800)-323-9005. We look forward to hearing from you. FirstAlert

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