KLEIN TOOLS
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Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance
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Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance
MULTIMETER WITH INCREASED ACCURACY using automatic ranging true root mean square (TRMS) technology
Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance
Item #: 222058444

Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance

Item #: 222058444

MMK 307606

Price Details

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*All items will import from US

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MULTIMETER WITH INCREASED ACCURACY using automatic ranging true root mean square (TRMS) technology
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What Stands Out

Auto-Ranging Function
The auto-ranging feature simplifies measurement processes, automatically detecting the range, which saves time and reduces errors for both beginners and professionals.
High Voltage Capacity
With a 600V AC/DC voltage capability, this multimeter effectively handles a wide variety of electrical tasks, making it a versatile tool for different environments.
TRMS Measurement
True RMS (TRMS) technology ensures accurate readings on non-linear loads, improving precision in both residential and industrial applications, ensuring reliable performance.

Product Details

Shop Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance online at a best price in Myanmar. B0B6WW5ZX8
Power SourceBattery Powered
Minimum Operating Voltage9 volts
Upper Temperature Rating60 u00b0C
Measurement TypeMultimeter
Compatible DevicesTest leads (included with the product)
Style NameAuto-Ranging
ColorOrange/Black
Item Weight1.76 ounces (49.9 grams)
Item Dimensions9.33 x 5.08 x 3.82 inches (23.7 x 12.9 x 9.7 cm)
Specification MetCat Iii 600v Safety Rating
Brand NameKLEIN TOOLS
ModelMM420
Unit Count1 Count
UPC092644693748
Number of Items1
ManufacturerKlein Tools
Global Trade Identification Number00092644693748
Included ComponentsDigital Multimeter, Auto-Ranging, 600V
Item Type NameBuilding Material
Part NumberMM420
BrandKLEIN TOOLS
StyleAuto-Ranging

Who Should Buy?

Suitable For
  • Electricians

    Ideal for electricians needing reliable measurements for AC/DC voltage, current, and resistance in various settings.

  • DIY Enthusiasts

    Great for DIY projects where basic electrical measurements are needed for home or hobby tasks.

  • Technicians

    Useful for technicians diagnosing electrical equipment with its auto-ranging feature and versatility in readings.

Not Suitable For
  • Advanced Engineers

    May not meet the high precision requirements of advanced engineers needing meticulous measurements beyond 600V.

Product Description

Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What features make the Klein Tools MM450 Slim Digital Multimeter unique?

    Answer: The Klein Tools MM450 Slim Digital Multimeter stands out due to its reverse contrast display that improves visibility in various lighting conditions. It features auto-ranging TRMS for accurate measurements of AC/DC voltage up to 600V and can measure current, resistance, and temperature. This versatility makes it suitable for professionals in electrical work, HVAC repairs, and DIY projects, ensuring reliable performance whether you're troubleshooting circuits or testing temperature in appliances.
  • Question: How do I use the auto-ranging feature of the MM450 Multimeter?

    Answer: Using the auto-ranging feature of the MM450 Multimeter is straightforward. Simply turn the dial to the measurement type you want to test, such as voltage, current, or resistance. The multimeter automatically selects the optimal range, displaying the readings on the screen instantly. This feature is particularly beneficial for users who may not be sure of the expected ranges, making it ideal for both novices and experienced technicians in various electrical applications.
  • Question: What types of measurements can the Klein Tools MM450 perform?

    Answer: The Klein Tools MM450 is capable of measuring a wide array of values including AC/DC voltage, current, resistance, and temperature. This multidimensional capability allows users to handle different tasks, from testing electrical circuits to measuring the temperature of HVAC systems. These features make it indispensable for electricians, HVAC professionals, and anyone engaged in electrical diagnostics at home or in a professional setting.
  • Question: Can the MM450 measure temperature, and what is the range?

    Answer: Yes, the Klein Tools MM450 can measure temperatures ranging from -20 to 1000 degrees Fahrenheit (-28 to 537 degrees Celsius). To measure temperature, simply set the multimeter to the temperature mode, insert the temperature probe, and read the displayed value. This function is particularly useful for HVAC technicians who need to assess heating and cooling systems accurately.
  • Question: What does the Lead Alert feature on the MM450 indicate?

    Answer: The Lead Alert feature on the MM450 notifies users if the test leads are connected improperly, ensuring safety and accuracy in measurements. When the multimeter is powered on and the leads are not correctly positioned, it emits a prompt alert. This essential feature reduces the risk of errors during testing, making it an invaluable tool for both novice users and seasoned professionals who work extensively in electrical environments.
  • Question: Is the Klein Tools MM450 durable for fieldwork?

    Answer: Absolutely! The Klein Tools MM450 is designed with durability in mind, featuring a rugged, slim profile that can withstand the rigors of fieldwork. Its design includes over-molded materials that offer added protection against drops and wear. Professionals who frequently take measurements on job sites will find this multimeter to be reliable in tough conditions, enabling them to carry out their tasks with confidence.
  • Question: What additional accessories come with the MM450 multimeter?

    Answer: The Klein Tools MM450 typically includes test leads, a temperature probe, and a user manual. Having the test leads and the temperature probe readily available ensures that users can start measuring right out of the box. This functionality is particularly useful for technicians who need to measure both electrical parameters and thermal readings in various settings, such as home inspections or industrial scenarios.
  • Question: Why is the reverse contrast display important?

    Answer: The reverse contrast display on the Klein Tools MM450 enhances readability, particularly in low-light conditions. It displays measurement values in bright contrast against a dark background, making it easier for users to quickly interpret results while working in tight, dimly lit spaces. This feature is significant for electricians and technicians who often find themselves working in various environments, ensuring they can obtain crucial measurements without straining their eyes.
  • Question: How does this multimeter compare to other models?

    Answer: The Klein Tools MM450 competes well with other multimeters due to its unique features like the reverse contrast display, lead alert, and auto-ranging capabilities. Compared to traditional models, it enhances user experience through better visibility and ease of use for both novice and expert users. Many technicians prefer the MM450 for its combination of efficiency and durability, making it suitable for all kinds of electrical work and repairs.
  • Question: Where can I buy Klein Tools MM450 Slim Digital Multimeter in Myanmar?

    Answer: You can purchase the Klein Tools MM450 Slim Digital Multimeter from Ubuy in Myanmar. Ubuy offers a simplified shopping experience with competitive pricing and a wide selection of electronics, including multimeters like the MM450. As a trusted online retailer, Ubuy provides all necessary product specifications and customer support to help you make an informed purchase.

KLEIN TOOLS Multi Testers Editorial Review

The Klein Tools MM420 Digital Multimeter has received widespread acclaim from users for its solid Construction, reliability, and ease of use. Customers are particularly impressed with its durable build quality, which is a hallmark of Klein Tools products. The design features firm buttons, a clear and backlit LCD display, and an intuitive layout that makes it user-friendly, even in challenging lighting conditions. One of the standout features is its auto-ranging capability, which simplifies the measurement process by automatically adjusting to the appropriate range. This, along with the True RMS functionality, ensures that users get accurate readings, especially when working with AC circuits. Many reviewers highlighted its versatility, successfully using it for measuring voltage, current, resistance, and temperature with the included thermocouple. The Klein MM420 is praised for being a great value for its price, boasting a professional-grade quality that Consumers can trust for both basic troubleshooting and more complex electrical work. Its portability, aided by a slim design and a case for easy storage, makes it a perfect tool to carry around. Users also noted the audible alerts for certain functions and the thoughtful inclusion of a kickstand, enhancing usability in various scenarios. While most feedback is positive, some users have indicated slight inaccuracies in specific measurements, such as capacitors, and expressed a desire for a model with a larger screen. Nevertheless, the overall sentiment reflects satisfaction with the product, marking it as a reliable and long-term investment. **

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Pros

  • Durable and well-Constructed
  • Intuitive and easy-to-use design
  • Auto-ranging feature for simplified measurements
  • True RMS capability for accurate readings
  • High visibility LCD display, even in low light
  • Versatile for multiple electrical measurements
  • Great value for professional-grade quality
  • Portability and easy storage

Cons

  • Slight inaccuracies reported for specific measurements (capacitors)

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23 July 2026 · via Trustpilot
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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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MMK 307606

Order now and get it around Thursday, August 27

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Features & Benefits

  • Measures up to 600V AC/DC voltage, 10A AC/DC current and 50 MOhms resistance
  • High visibility display with reverse contrast and optical sensor
  • Lead alert protection with LED illumination
  • Slim profile conveniently fits into most pockets
  • Durable meter built to withstand a 6.6-foot drop
  • CAT III 600V safety rating

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