60th Anniversary SaleEnds Sunday. Exclusions, terms and conditions apply.Shop now

Skip to contentGo to Product Search
Main Content

First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White

Model: 1039746
SKU: 12164485
Sold & shipped by

About this product

Detect dangerous CO levels in your home with this First Alert CO615 carbon monoxide alarm. The plug-in design makes installation easy and lets you move the unit from room to room as needed. Battery backup on this First Alert carbon monoxide alarm keeps it working even during a power outage for added peace of mind and security.

Features
  • Advanced electrochemical sensor

    Detects carbon monoxide leaks from multiple sources, including faulty fuel-burning appliances.

  • Easy-view backlit digital display

    Enables viewing of danger levels, current and peak CO levels in your home. It illuminates only when the alarm sounds or a button is pressed.

  • Plug and protect

    Plugs into any standard 120V AC outlet with no additional mounting. The line cord allows multiple installation options.

  • Battery backup

    Provides consistent protection for added safety during power outages. Two AA batteries are included.

  • Easy-access battery door

    The front open compartment ensures easy battery change without dismounting the alarm.

  • Mute button

    Silences unnecessary alarms. You can also test your alarm function with the same button.

  • End-of-life timer

    The alarm chirps when it is time to replace it.

See all features
Specifications
  • Detector Type
    Carbon monoxide
    Sensor Type
    Electrochemical
    Power Source
    Battery-powered, Plug-in
    Number of Devices Included
    1
Sponsored

Reviews

Rating 4.6 out of 5 stars with 50 reviews

96% would recommend to a friend

Customer Images

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.

  • Rated 5 out of 5 stars

    Review / First Alert - CO615 Carbon Monoxide Alarm

    This review is about the First Alert - CO615 Carbon Monoxide Plug-In Alarm. Two alarms were purchased and one has been mounted. This alarm is easy to mount. There is a 'Test/Silence' button and a 'Peak Level' button on the front of the unit. By pressing the Test/Silence button, the screen lights with a blue background, four bars and a loud beeping sound, to indicate the presence of CO, in amounts ranging from 70 ppm to 400 ppm. By pressing the Peak Level button, the data in Memory is displayed, showing any CO level that the alarm had recorded while you were away from your home. Since this is a battery backup model, you should keep fresh batteries in the unit and check their voltage on a regular basis. Since a power outage can be an already frustrating experience, you will want to have the alarm on and ready to detect any CO that may be in the air.

    This review is from First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White

    Posted by JustanAverageBestBuyer

  • Rated 5 out of 5 stars

    1st Alert - CO 15 Carbon Monoxide Plug In

    1/28/24. I purchased this great life-saving product based on the exceptional info from Garza regarding its excellent life-saving features. Garza, thank!

    This review is from First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White

    Posted by DKM11

  • Rated 4 out of 5 stars

    works well

    discreet & you don't even know it is there, which is the point, I believe.

    Posted by ScottK

  • Rated 5 out of 5 stars

    Perfect for the space

    this product was perfect for the space I had and worked great. price was good.

    This review is from First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White

    Posted by RITAM

  • Rated 4 out of 5 stars

    Safe and Silent

    I purchased this warning device 11 months ago. I plugged it in after reading the directions and it has been operating continually since. It is silent unless the alarm goes off - which has not happened this far. I have it in the hallway outside my bedroom on the second floor and you would never know it was there unless you saw it. I check it periodically and so far all is in order. I definitely would recommend this device.

    This review is from First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White

    Posted by Will

Compare similar products

First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White
First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White
4.6(50)

Detect dangerous CO levels in your home with this First Alert CO615 carbon monoxide alarm. The plug-in design makes installation easy and lets you move the unit from room to room as needed. Battery backup on this First Alert carbon monoxide alarm keeps it working even during a power outage for added peace of mind and security.

First Alert - Plug-In Explosive Gas and Carbon Monoxide Alarm - White & Gray
4.6(47)

Protect yourself from explosive gas and carbon monoxide with this First Alert alarm. It lets you know if propane, natural gas, methane or carbon monoxide are present in your home. This First Alert alarm plugs into any standard outlet, and it has a backup battery for uninterrupted protection during power failures.

First Alert - Smoke and Carbon Monoxide Detector Battery Powered - White

First Alert Battery Smart Smoke Alarm

First Alert - 10 Year Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector 1 each

Be alerted to the type of danger and its location in your home with First Alert's SMCO210V 10-Year Sealed Battery Combination Smoke and Carbon Monoxide Alarm with Voice and Location Alerts. This 2-in-1 alarm provides convenient protection against both threats and meets new industry standards. First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.

Pros for First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White
There were no pros for this productThere were no pros for this productInstallation Ease, Connectivity, Overall Performance, Compatibility, Battery LifeThere were no pros for this product
Cons for First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White
There were no cons for this productThere were no cons for this productFeatures, Alarm Accuracy, Night Light, App Usability, SizeThere were no cons for this product

Specs

Questions & Answers
  • Can this unit be ran just off the battery?

    Thank you for your question. Relying on the backup battery as the main power source will necessitate frequent battery changes. Battery backup on this First Alert carbon monoxide alarm keeps it working even during a power outage for added peace of mind and security. If you have any additional questions, please don’t hesitate to reach out to our First Alert Consumer Support team at 1 (800)-323-9005.

    Answered by FirstAlertProductExpert
    FirstAlertProductExpert response
  • What year was this manufactured? How long is the warranty? I am seeing some being sold that were made more than a few yrs ago

    Thank you for your question, Sandee. The date of manufacture will be located on the back of the unit. If you have any additional questions, please don't hesitate to contact our Support Team at 1(800)-323-9005.

    Answered by FirstAlertProductExpert
    FirstAlertProductExpert response
  • Should a CO detector be mounted close to the floor at a wall outlet or higher up on the wall?

    Since CO is slightly less dense than air the higher the detector is placed is better. "If you use plug-in CO detectors, find the highest outlet to place them. A detector near the floor may not sound an alarm quickly enough to keep you safe. If you use detectors that provide periodic readouts of CO levels, place them high enough to read to monitor CO levels."

    Answered by HarryPotter
  • Is there any battery backup so if power goes out it continues to work?

    Yes

    Answered by CharlesO
  • Does it chirp every 90 seconds? Does it chirp at all?

    No, during normal operation, this unit does not chirp every 90 seconds. The following should help explain the chirps/beeps: What Do the Beeps From Your Carbon Monoxide Alarm Indicate? * 4 Beeps and a Pause: EMERGENCY. This means that carbon monoxide has been detected in the area, you should move to fresh air and call 9-1-1. * 1 Beep Every Minute: Low Battery. It is time to replace the batteries in your carbon monoxide alarm. * 5 Beeps Every Minute: End of Life. This type of chirp indicates it is time to replace your carbon monoxide alarm. The above information was taken from https://www.firstalert.com/community/safety-corner/what-does-the-beep-mean

    Answered by LanceRockwood
Ask a question
No content
Sponsored

Finance Options

My Best Buy® Credit Card
Buy Now, Pay Later

Finance Options

My Best Buy® Credit Card
Buy Now, Pay Later