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Klein Tools ET120 Gas Leak Detector Review

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By Best Choice team
Checked icon Last updated - June 12, 2025
9.1

Verdict overview

  • worth the money 8.9
  • Simple to use 9.3
  • Precision 9.1
Pros
  • Wide detection range up to 10,000 ppm.
  • Adjustable sensitivity for precise detection.
  • Flexible gooseneck for hard-to-reach areas.
Cons
  • LED light not detailed.

Tech specs

display style Digital
color Black
pattern Detector
batteries included Yes
operating humidity 85 percent
description pile 4 x AAA
alarm Audible
customer reviews4.5 4.5 out of 5 stars 1,677 ratings 4.5 out of 5 stars
battery cell type Alkaline
measurement system Metric
product dimensions 1.79D x 2.71W x 28.3H
batteries 4 AAA batteries required. included
item weight 13 ounces
special features Audible Alert, Auto-Power Off, Visual Notification
item package quantity 1
power source Battery Powered
style Combustible Gas
batteries required Yes
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Product Overview

My experience with the Klein Tools ET120 Gas Leak Detector has been overwhelmingly positive. I have used it to detect combustible gas leaks in many different environments, and it has always performed admirably. It is incredibly easy to use and offers a reliable detection range of approximately 50 to 10,000 ppm, based on Methane.

The two levels of sensitivity high approximately 50 to 1,000 ppm and low approximately 1,000 to 10,000 ppm make it highly versatile for a variety of different applications. The five red LED lights provide a visual notification that increases with gas concentration and the 85dB audible alert lets you know when you are close to the leak. Additionally, the 18 inch flexible gooseneck expands the sensor s reach and clips onto the meter for easy storage. The over molded body makes gripping it comfortable and allows for a secure hold when using.

The ET120 also has an automatic zero point calibration at power up which helps ensure accuracy by flashing its lights during self calibration which does not indicate the presence of gas . Plus, it features an auto power off after 10 minutes of non usage which conserves battery life while providing an extra measure of safety. As if that weren t enough, the ET120 also comes with 4 AAA batteries included so you can be up and running right away.

In conclusion, I highly recommend the Klein Tools ET120 Gas Leak Detector as an effective way to detect combustible gas leaks in any environment. From its wide range of features to its ease of use and convenience, this product makes an excellent choice for anyone who needs a dependable gas leak detector that won t break their budget. Whether you re a professional contractor or just someone looking for peace of mind in your home or workplace, I believe this product will serve you well.

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Frequently asked questions

  • What is the detection range of this gas detector?Arrow icon
  • What type of alarm does this gas detector have?Arrow icon
  • Is there an auto power off feature?Arrow icon
  • What type of batteries does this gas detector require?Arrow icon
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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

91% of reviewers would recommend to a friend, Based on 3,354 Reviews

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