Klein MM720 Multimeter Review

Klein MM720 Multimeter Review: Tested & Trusted

Ever wondered what it’s like to have a reliable, high-performing multimeter that can handle a wide range of tasks? Well, you’re in luck! Today, we’re diving deep into the world of Klein Tools, specifically their MM720 Digital Multimeter.

This Klein MM720 review will give you a detailed look at its features, pros, cons, and everything. So, are you ready to explore?

Let’s get started!

Klein MM720 Overview

The Klein MM720 is a true root mean squared (TRMS) digital multimeter that automatically ranges. Now, what does that mean? Well, it’s designed to measure AC/DC voltage, AC/DC current, and resistance with high accuracy.

But wait, there’s more! It can also measure temperature, capacitance, frequency, duty cycle, test diodes, and continuity. And the best part? It comes with a high visibility, reverse contrast LCD display with an optical sensor that adjusts the display based on the lighting conditions. Now, isn’t that impressive?


  • TRMS technology
  • Low impedance (LoZ) mode
  • Measures up to 1000V AC/DC voltage
  • Temperature, capacitance, and frequency measurement
  • IP42 rated
  • Low battery indicator
  • High visibility reverse contrast display
  • Suitable for electromagnetic environments

Klein MM720 Features

  • Automatic ranging true root mean square (TRMS) technology for increased accuracy
  • Measures up to 1000V AC/DC voltage, 10A AC/DC current, and 60 MOhms resistance
  • Can measure temperature, capacitance, frequency, duty-cycle, diodes, and continuity
  • High visibility, reverse contrast display with an optical sensor to automatically optimize viewability in dark or bright ambient lighting
  • Low Impedance (LoZ) mode for identifying and eliminating ghost or stray voltages

What’s Included in the Package

  • Klein MM720 Multimeter
  • Carrying pouch
  • Test leads
  • Thermocouple with adapter
  • Batteries

Specifications Klein MM720

Measures AC/DC VYes
Measures AC/DC AYes
True RMSYes
Maximum Voltage AC1000 V
Resolution AC Volts1 V (1000 mV)
Maximum Voltage DC1000 V
Resolution DC Volts1 V (1000 mV)
Current AC/DC Range600.0 uA (0.6 mA) -10 A
Basic Accuracy V DC±(1.0% + 3 digits)
Display Counts6000
Diode TestingYes
CAT RatingIV
CAT Voltage1,000 V, 600 V
Battery TypeAAA

Design and Build

The Klein MM720 is a multimeter that has been carefully designed with the user in mind. Its compact size and durable construction ensure that it can withstand a drop of up to 6.6 feet without getting damaged.

Not only is the orange and black color scheme visually appealing, but it also makes the multimeter easy to spot in a crowded toolbox. This thoughtful design element adds convenience to its functionality.


The MM720 is designed to be handheld, which means it is easy to use and carry around. The layout of the buttons and the display are carefully designed to be user-friendly, allowing you to take measurements quickly and accurately.

The device comes with a carrying pouch to further enhance its portability, making it even more convenient to transport from one location to another.


Durability is a crucial aspect of any multimeter, and the MM720 excels in this regard. It is built to last, capable of withstanding a 6.6-foot drop without sustaining damage.

Additionally, it is rated IP42, which means it is protected against objects larger than 1mm in size and water droplets. These durability features ensure that the MM720 can withstand the rigors of everyday use, making it a reliable tool for various applications.


When it comes to performance, the MM720 is a high-performer. It utilizes automatic ranging TRMS (True Root Mean Square) technology, which enhances accuracy in measurements. With the capability to measure up to 1000V AC/DC voltage, 10A AC/DC current, and 60 MOhms resistance, this multimeter covers a wide range of measurement tasks.

Additionally, it offers the ability to measure temperature, capacitance, frequency, duty-cycle, test diodes, and continuity, making it a versatile tool suitable for a variety of electrical tasks.


Accuracy is paramount when it comes to measuring electrical quantities, and the MM720 doesn’t compromise in this aspect. It boasts a basic accuracy of ±(1.0% + 3 digits) for DC voltage measurements, ensuring precise and reliable readings.

True RMS technology enables accurate measurements of non-linear loads as well. Whether you are measuring voltage, current, or resistance, you can trust the MM720 to provide you with accurate results, enabling you to make informed decisions based on precise data.


The MM720 offers a wide measurement range, catering to various electrical scenarios. It can measure up to 1000V for both AC and DC voltage, and up to 10A for both AC and DC current.

The resistance measurement capability extends up to 60 MOhms. This broad range of measurements allows the MM720 to handle a diverse set of tasks, making it a versatile tool suitable for professionals and DIY enthusiasts alike.


The MM720 goes beyond being a simple multimeter and offers a multitude of functionalities. In addition to measuring voltage, current, and resistance, it can also measure temperature, capacitance, frequency, duty-cycle, test diodes, and continuity. These added features expand its capabilities and make it a comprehensive tool for electrical measurements.

Moreover, the device incorporates a Low Impedance (LoZ) mode, which helps identify and eliminate ghost or stray voltages, ensuring accurate and reliable readings.

Measurement Modes

The MM720 boasts an array of measurement modes, providing flexibility and versatility. It supports AC/DC voltage and current measurements, resistance, temperature, capacitance, frequency, duty-cycle, diode testing, and continuity.

These various modes empower users to tackle a wide range of electrical measurement tasks efficiently, making the MM720 a valuable tool in different electrical applications.

User Interface

The user interface of the MM720 is designed with usability in mind. The high visibility, reverse contrast LCD display ensures that readings are clear and easily readable in various lighting conditions. The layout of the buttons is intuitive and user-friendly, allowing for seamless operation.

Furthermore, an optical sensor is incorporated into the device, automatically optimizing the display based on ambient lighting conditions, ensuring optimal viewability at all times.


The MM720 features a high visibility, reverse contrast LCD display. This display type ensures that readings are clear and easily visible, even in challenging lighting conditions.

Additionally, an optical sensor is integrated into the device, automatically adjusting the display’s brightness and contrast based on the ambient lighting. This feature enhances the readability of the display and provides optimal visibility for users, irrespective of the surrounding environment.


The controls on the MM720 are designed to be intuitive and easy to use. The device incorporates a function selector switch, a range button, a relative button, a max/min button, a hold/backlight button, and a select button.

These controls make it effortless to switch between different measurement modes and settings, allowing users to navigate the multimeter’s features with ease.

Safety Features

Safety is a top priority when dealing with electricity, and the MM720 incorporates several safety features to protect users. It possesses a CAT IV 600V safety rating, making it safe for use in residential, business, and light-industrial locations.

The multimeter also includes a low battery indicator, ensuring that you are aware when the battery needs replacement. Additionally, the battery and fuse compartment are easily accessible, facilitating quick and convenient replacements when necessary.

Additional Features

In addition to its main features, the MM720 also includes some additional features. It has a low battery indicator, an easily accessible battery and fuse compartment, and a carrying pouch for easy transportation.


  • High accuracy
  • Wide measurement range
  • Durable and robust design
  • Easy-to-read display
  • Versatile functionality


  • Slightly heavier than some other multimeters
  • No peak hold function

Who Should Consider Buying the Klein MM720?

The Klein MM720 is a versatile tool suitable for a range of users, including professionals and DIY enthusiasts. Whether you are an electrician, technician, or homeowner who enjoys tackling your own repairs, the MM720 caters to a variety of tasks.

Its high accuracy, wide measurement range, and durable design make it a reliable tool for multiple applications. Whether you need to measure voltage, current, resistance, or temperature, the MM720 is a tool that can meet your needs effectively.

Customer Reviews and Feedback

Customers have highly rated the Klein MM720, with an average rating of 4.7 out of 5 stars. Users appreciate the multimeter’s accuracy, durability, and versatility. The high visibility display and intuitive controls have also received praise from customers.

The positive reviews and feedback reflect the MM720’s ability to make a lasting impression on users, reinforcing its value as a dependable multimeter.

Klein MM720 vs. 700

When comparing the MM720 to MM700, the MM720 stands out with its additional features. The MM720 offers temperature measurement capability, which can be useful in various electrical applications.

Additionally, it incorporates a Low Impedance (LoZ) mode, allowing for the identification and elimination of ghost or stray voltages. While both models provide a wide range of measurement capabilities, the MM720’s added features make it a preferred choice for those who require temperature measurements or encounter situations where stray voltages need to be addressed.


The Klein MM720 is a high-performing, versatile, and reliable multimeter. Its wide range of features, high accuracy, and durable design make it an excellent tool for professionals and DIY enthusiasts alike.

With the ability to measure voltage, current, resistance, temperature, and more, the MM720 caters to various electrical tasks with precision. Whether you are an electrician working on complex projects or a homeowner fixing everyday electrical issues, the MM720 is a trustworthy companion that can provide accurate measurements to support your work.


Is the Klein MM720 suitable for professional use?

Klein MM720 is suitable for both professional and DIY use. Its high accuracy and wide range of features make it a reliable tool for various tasks.

What is the measurement range of the Klein MM720?

The Klein MM720 can measure up to 1000V for both AC and DC voltage, up to 10A for both AC and DC current, and up to 60 MOhms for resistance.

What additional features does the Klein MM720 offer?

The Klein MM720 offers several additional features, including temperature measurement, capacitance measurement, frequency measurement, duty-cycle measurement, diode testing, continuity testing, and a Low Impedance (LoZ) mode.

What safety features does the Klein MM720 have?

The Klein MM720 is rated CAT IV 600V, providing protection against transient voltages in low-voltage installations. It also features a low battery indicator and an easily accessible battery and fuse compartment.

What is included in the Klein MM720 package?

The Klein MM720 package includes the multimeter, a carrying pouch, test leads, a thermocouple with an adapter, and batteries.


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