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First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup Review

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By Best Choice team
Checked icon Last updated - April 24, 2025
9.5

Verdict overview

  • Easy installation 9.8
  • lasts a long time 9.3
  • Simple to use 9.6
  • Precision 9.3
  • Battery Duration 9.3
  • clearly written 9.6
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Pros
  • Easy plug-in with battery backup.
  • Accurate CO detection anywhere in room.
  • Simple test/silence button operation.
Cons
  • Battery quality uncertain.

Tech specs

color White
pattern Alarm
batteries included Yes
warranty description 7 Years Limited
alarm Carbon Monoxide
customer reviews4.7 4.7 out of 5 stars 18,035 ratings 4.7 out of 5 stars
battery cell type Alkaline
product dimensions 1.38D x 5W x 3.4H
batteries 1 9V batteries required. included
upper temperature rating 105 Degrees Fahrenheit
item weight 4.2 ounces
voltage 120 Volts
item package quantity 1
size 1-Pack
material Plastic
power source Corded Electric
style Plug in Alarm with Battery Backup
sensor type Electrochemical
batteries required Yes
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Product Overview

The First Alert CO605 Carbon Monoxide Alarm is a great product for anyone concerned about the safety of their family. This alarm is designed to detect dangerous levels of carbon monoxide in your home and alert you with a loud 85 decibel alarm. It is easy to install, with a simple plug in design that plugs into any standard outlet. It also comes with a battery backup, so it can still monitor carbon monoxide levels during power outages.

The First Alert CO605 features an advanced electrochemical carbon monoxide sensor that is incredibly accurate, giving you peace of mind that you re protected. It also has a single test/silence button, making it easy to use and check the alarm s status. For added convenience, the alarm also has a low battery signal mute, which quiets the low battery signal for up to 8 hours.

This alarm is perfect for anyone looking for a reliable and easy to use carbon monoxide detector. It is especially great for families and those who live in multi level homes, as it is recommended to install one on each level of your home and in each bedroom. The First Alert CO605 also comes with a 7 year limited warranty and has an end of life signal chirp, so you know when it s time to replace the unit for safety.

When it comes to features, the First Alert CO605 has a lot to offer. The easy to install design makes it a breeze to set up, while the reliable electrochemical sensor ensures accurate readings. The battery backup is also a great feature, giving you peace of mind that your family is safe even during power outages. The low battery signal mute is also a great feature, as it prevents false alarms from going off at night and ensures that you ll get an accurate reading when the alarm does go off.

Overall, the First Alert CO605 Carbon Monoxide Alarm is a great product for anyone looking for a reliable and easy to use carbon monoxide detector. The reliable sensor, easy to install design, and battery backup make this alarm a must have for anyone concerned about the safety of their family. With its 7 year limited warranty and end of life signal chirp, you can be sure that this alarm will provide you with reliable protection for years to come. Highly recommended.

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The secret behind our reviews

By Best Choice team

Best Choice Team is your go-to source for curated product recommendations across various categories. Leveraging years of industry experience and advanced AI technology, we analyze data from multiple sources to bring you the most relevant and up-to-date product lists.

Our AI-driven approach allows us to streamline the selection process, ensuring that the products we feature align with current market trends and consumer preferences. We aim to provide content that helps you navigate your purchasing decisions with greater ease Like.

Users reviews

95% of reviewers would recommend to a friend, Based on 36,070 Reviews

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