First Alert CO615 Carbon Monoxide Detector
Where to Buy
| Retailer | Price | Last seen | Buy |
|---|---|---|---|
O Opens in a new window | $4.99 | Jun 22, 2022, may have changed | Buy Now |
M Mercari | $9.00 | Dec 8, 2024, may have changed | Buy Now |
 Bonanza Sold by ReCell208's booth | $22.49 | Apr 2, 2023, may have changed | Buy Now |
 Amazon Sold by Amazon Resale | $29.76 | Dec 8, 2024, may have changed | Buy Now |
G Giftiks | $30.19 | Jun 19, 2023, may have changed | Buy Now |
Prices are collected from retailer listings; each row shows the date we last saw that price. Return and shipping terms are each store's standard policy from our retailer research (April 2026). Some products and categories have different terms, so check with the store before you buy.
Used & Refurbished
✨ See 3 used & refurbished prices with ShopSavvy ProGet the app →Pros
- •Simple setup thanks to straightforward instructions and included batteries.
- •Provides a sense of safety, especially during the winter season.
- •The unit offers effective CO detection with a functional digital display.
- •Battery backup compartment is conveniently accessible from the front.
- •The digital display differentiates it from other alarms by clearly indicating the source of alerts.
- •Allows for versatile placement in various rooms, enhancing safety coverage.
- •Received positive ratings for performance from Consumers Report.
Cons
- •Green LED indicator is poorly positioned and difficult to see.
- •Display does not remain lit continuously, only lighting up for tests or alarms.
- •Fails to alert users to CO levels below 30ppm, which some may find insufficient.
- •Unnecessary nightly alarm with no clear explanation provided in the instructions.
- •Reports of previous models having similar reliability issues.
- •Some users experienced the unit failing to detect CO in multiple testing scenarios.
- •The advertised lifespan of 7 years may not always be accurate according to some reviews.
Bottom Line
The First Alert CO615 Dual-Power Carbon Monoxide Detector Alarm offers convenience with easy setup, battery backup, and versatile placement options. However, its performance is mixed, with some users experiencing reliability issues and unnecessary alarms. While praised for its functionality in many cases, potential buyers should weigh the pros and cons and consider having multiple units for comprehensive home safety coverage.
What Reviewers Are Saying
📚More About First Alert CO615 Carbon Monoxide Detector
Discussion
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