Pros
Accurate CO level detection.
Portable with protective features.
Clear display and dual alarm system.
Cons
Automatic power off risk.
Tech specs
display style | Backlit LCD |
color | Orange |
batteries included | Yes |
description pile | 4 x AAA |
alarm | Visual |
customer reviews | 4.6 4.6 out of 5 stars 1,081 ratings 4.6 out of 5 stars |
battery cell type | Alkaline |
measurement system | Metric |
product dimensions | 1.46D x 2.16W x 7.74H |
batteries | 4 AAA batteries required. included |
item weight | 5.1 ounces |
special features | Audible Alert, Auto-Power Off, Visual Notification |
item package quantity | 1 |
power source | Battery Powered |
style | Meter |
batteries required | Yes |

Product Overview
I recently had the opportunity to try out the Klein Tools ET110 CO Meter, and I must say that Im very impressed. This product is a battery powered carbon monoxide detector that is designed to detect and measure concentration levels of carbon monoxide gas. It has an easy to use design that makes it incredibly user friendly. It also has a low level alarm 35 ppm and high level alarm 200 ppm , as well as audible and visual alarms to alert you of any dangerous levels of carbon monoxide. The backlit display shows both CO measurements 0 to 1000 ppm and temperature Farenheit and Celcius . Additionally, it features an auto power off after 20 minutes of no usage which helps conserve battery life. It even comes with a carrying pouch and 4xAAA batteries included so its ready to use right out of the box.
I found this product to be incredibly easy to use. The design is intuitive, so you dont have to spend time figuring out how to use it. It also has an easy to read backlit display which makes it simple for anyone to read the measurements quickly and accurately. The audible and visual alarms are great for alerting you when dangerous levels of carbon monoxide are detected in your home or workspace. Plus, the auto power off feature is really useful for conserving battery life when not in use.

In terms of accuracy, I was really impressed by how accurate this product was at detecting levels of carbon monoxide. It was able to detect even small amounts of carbon monoxide with precision and accuracy, which is really important when it comes to safety. The readings were also consistent throughout my testing period, so Im confident that this product will provide reliable measurements for years to come.
Overall, I highly recommend the Klein Tools ET110 CO Meter for anyone who needs an accurate carbon monoxide detector for their home or workspace. Its user friendly design makes it easy for anyone to use, while its reliable readings give you peace of mind that your family or coworkers are safe from dangerous levels of carbon monoxide gas. The auto power off feature also helps conserve battery life, so you can be sure that your detector will always be ready when you need it most.
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