Best carbon monoxide detector with alarms

Our top 3 picks

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  First Alert Carbon Monoxide Detector, Plug-In Alarm with Battery Backup, CO605, White, 1-Pack

  The First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup is an essential safety device for any home. Its plug-in design, combined with a battery backup, ensures continuous monitoring even during power outages. Featuring an advanced electrochemical sensor, it accurately detects carbon monoxide levels anywhere in the room, making it ideal for placement on every level of your home and in each bedroom. The unit is user-friendly, with a single test/silence button and a loud 85-decibel alarm that alerts you to dangerous CO levels. Customers appreciate its reliability and ease of use, although some have noted issues with the included battery. Despite this, the detector's overall performance and comprehensive 7-year warranty make it a top choice for safeguarding your family against carbon monoxide threats.
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  Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

  The Kidde Carbon Monoxide Detector is a reliable and easy-to-use safety device, ideal for both home and travel use. Powered by 3 AA batteries, it ensures continuous operation even during power outages. Its portable design allows for easy installation on walls or placement on tabletops, making it versatile for various locations including garages and vacation homes. The detector features a green LED for power indication and a loud 85-decibel alarm with a red LED for CO detection, ensuring prompt alerts. With a 10-year limited warranty, users appreciate its longevity and peace of mind. Customer reviews highlight its user-friendly design and the convenience of its battery operation, making it a top choice for safeguarding against carbon monoxide exposure.
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  Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

  The Kidde Carbon Monoxide Detector is a reliable and user-friendly safety device, perfect for ensuring peace of mind in any home. Featuring electrochemical sensor technology, this detector provides accurate carbon monoxide detection. It operates on 2-AA batteries, allowing it to function even during power failures, and includes a Test-Hush button for easy testing and temporary silencing of low battery warnings. Its versatile design allows it to be mounted on a wall or placed on a tabletop, making it ideal for multi-level homes, especially those with wood-burning stoves. The detector emits an 85-decibel alarm and features a red LED to indicate the presence of carbon monoxide, ensuring effective alerting. Customer reviews highlight the loud and reliable alarm performance, with users appreciating its straightforward installation and operation. With a 10-year limited warranty, the Kidde Carbon Monoxide Detector offers long-term protection, although users should note that the unit will need replacement after about 5-6 years of use.