---
product_id: 737545143
title: "Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black"
brand: "klein tools"
price: "666 zł"
currency: PLN
in_stock: true
reviews_count: 5
category: "Klein Tools"
url: https://www.desertcart.pl/products/737545143-klein-tools-mm420-digital-multimeter-automatic-range-trms-multimeter-600v
store_origin: PL
region: Poland
---

# 600V AC/DC voltage range Low battery indicator & easy battery access 6.6 ft drop-tested durability Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black

**Brand:** klein tools
**Price:** 666 zł
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your precision with Klein’s TRMS multimeter—where accuracy meets durability!

## Quick Answers

- **What is this?** Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black by klein tools
- **How much does it cost?** 666 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/737545143-klein-tools-mm420-digital-multimeter-automatic-range-trms-multimeter-600v)

## Best For

- klein tools enthusiasts

## Why This Product

- Trusted klein tools brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rugged Drop Protection:** Built to survive 2-meter drops—because your tools should work as hard as you do.
- • **Precision TRMS Technology:** Experience true RMS accuracy for flawless AC/DC measurements every time.
- • **User-Friendly Maintenance:** Quick battery and fuse access keeps you powered up and ready without downtime.
- • **Illuminated Lead Placement:** LED-lit leads and backlit display ensure no guesswork in any lighting condition.
- • **Versatile Measurement Suite:** From voltage and current to temperature and capacitance—one tool does it all.

## Overview

The Klein Tools MM420 Digital Multimeter combines advanced True RMS technology with a broad 600V AC/DC voltage range and 10A current capacity. Designed for professionals, it features LED-illuminated leads, a backlit display, and rugged drop resistance up to 6.6 feet. This versatile tool measures voltage, current, resistance, temperature, capacitance, frequency, and more, all while offering easy battery and fuse access for uninterrupted workflow.

## Description

Product Description Klein Tools MM420 Multimeter is a True Square Average Square Root (TRMS) multimeter for measuring AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty cycle, test diodes and conductivity. The Klein Tools test and measurement product line is designed exclusively from the ground up by an electrician. By combining years of field research and extensive inputs from electricians across the country, the company influenced the development of innovative, time-saving meter and electrical testers. Safety Warning Do not use the meter in electric storms or rainy weather. Also, do not use if the meter or test lead appears damaged

Review: good
Review: good seller

## Features

- This multimeter is made with automatic measurement standard square root (TRMS) technology for increased precision
- Measures up to 600V AC/DC voltage, 10A AC/DC current, 50 mom resistance, continuous, temperature, capacitance, frequency, duty cycle and test diodes
- Led light protection with LED illumination for lead placement and easy to read backlit display
- Low battery indicator and easy access battery and fuse compartment
- Durable meter withstands 6.6 feet (2 m) drops

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B57PFFYX |
| Amazon Bestseller | #269,564 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #18,463 in Electrical Equipment |
| Brand | KLEIN TOOLS |
| Brand Name | KLEIN TOOLS |
| Color | orange/black |
| Customer Reviews | 4.7 out of 5 stars 9,840 Your Review |
| Global Trade Identification Number | 00092644693748 |
| Included Components | Digital Multimeter, TRMS Auto Range, 600V, Temperature |
| Item Dimensions | 23.7 x 12.9 x 9.7 cm |
| Item Length | 6.41 Inches |
| Item Type Name | Digital Multimeter, TRMS Auto Range, 600V, Temperature |
| Item Width | 1.78 Inches |
| Item dimensions L x W x H | 23.7 x 12.9 x 9.7 cm |
| Manufacturer | Klein Tools |
| Maximum Operating Voltage | 600 Volts |
| Measurement Type | Multimeter |
| Min. Operating Voltage | 9 Volts |
| Minimum Operating Voltage | 9 Volts |
| Model | MM420 |
| Power Source | Battery Powered |
| Specification Met | Cat Iii 600v Safety Rating |
| Style | Includes lead door rate |
| Style Name | Includes lead door rate |
| UPC | 092644693748 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 1000 Degrees Celsius |

## Product Details

- **Brand:** KLEIN TOOLS
- **Color:** orange/black
- **Item dimensions L x W x H:** 23.7 x 12.9 x 9.7 cm
- **Power Source:** Battery Powered
- **Style:** Includes lead door rate

## Images

![Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black - Image 1](https://m.media-amazon.com/images/I/51O0EAYj9aL.jpg)
![Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black - Image 2](https://m.media-amazon.com/images/I/61G61oMpJeL.jpg)
![Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black - Image 3](https://m.media-amazon.com/images/I/61x0nOpxbsL.jpg)
![Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black - Image 4](https://m.media-amazon.com/images/I/51FLeGC6O9L.jpg)
![Klein Tools MM420 Digital Multimeter, Automatic Range TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 Momh Resistor, Orange/Black - Image 5](https://m.media-amazon.com/images/I/61JV+XD63SL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐ good
*by A***R on November 8, 2018*



### ⭐⭐⭐⭐⭐ good seller
*by H***8 on July 31, 2025*



### ⭐⭐⭐⭐⭐ Klein Works!
*by I***Y on February 21, 2026*



## Frequently Bought Together

- Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance
- WERJIA Hard Carrying Case for Klein Tools MM420/MM325/MM720/MM700/ET600/MM450 Digital Multimeter
- Klein Tools 69417 Rare-Earth Magnetic Hanger, with Strap

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-13*