---
product_id: 463567951
title: "Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance"
brand: "klein tools"
price: "VT26751"
currency: VUV
in_stock: true
reviews_count: 13
category: "Klein Tools"
url: https://www.desertcart.vu/products/463567951-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v
store_origin: VU
region: Vanuatu
---

# 600V AC/DC Voltage Auto-Ranging TRMS Accuracy 6.6-ft Drop Durable Build Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance

**Brand:** klein tools
**Price:** VT26751
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Your Precision, Own the Job Site!

## Quick Answers

- **What is this?** Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance by klein tools
- **How much does it cost?** VT26751 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/463567951-klein-tools-mm420-digital-multimeter-auto-ranging-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

- • **Complete Pro Kit:** Includes CAT III/IV safety-capped leads, thermocouple, and batteries—everything you need to start testing right out of the box.
- • **Hands-Free Hustle:** Built-in test lead holders, kickstand, and optional magnetic hanger let you multitask like a pro on the job site.
- • **Safety First, Always:** Lead-Alert LEDs ensure your test leads are perfectly placed—because precision and protection go hand in hand.
- • **Precision Meets Power:** Auto-ranging TRMS tech delivers lightning-fast, ultra-accurate voltage, current, and resistance readings every time.
- • **Work Anywhere, Anytime:** Backlit LCD display and rugged 6.6-foot drop resistance keep you productive in any lighting or environment.

## Overview

The Klein Tools MM420 Digital Multimeter is a professional-grade, auto-ranging TRMS meter designed for electricians and serious DIYers. It measures up to 600V AC/DC voltage, 10A current, and 50MΩ resistance with advanced safety features like Lead-Alert and CAT III/IV rated test leads. Its rugged design withstands 6.6-foot drops, while the backlit LCD ensures clear readings in any lighting. This all-in-one tool includes temperature, capacitance, frequency, and diode testing, making it an essential, reliable companion for precise electrical diagnostics.

## Description

Klein Tools MM420 Multimeter is an auto-ranging, true root mean square (TRMS) multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty-cycle, and test diodes and continuity. Klein Tools' Test and Measurement product line was exclusively designed from the ground up by electricians for electricians. Years of field research, combined with extensive input from electricians across America, inspired the development of meters and electrical testers loaded with innovative, time-saving features.

Review: precise and reliable digital multi-tester for pros! - it’s incredibly reliable and easy to use. the auto-ranging feature makes measuring voltage, current, and resistance quick and accurate, while the clear digital display ensures readings are easy to read. the compact, sturdy design feels professional and durable, perfect for both job sites and home projects. overall, this multi-tester delivers precision, convenience, and durability in one essential tool. great battery life too!!
Review: Very Nice Electrical Testing Kit - An excellent test kit. Good selection of electrical tools for the home DIY for a reasonable cost. Did some initial testing after receiving and it appeared to work well. However have not had the news to test all settings on the MM (e.g. current). I was surprised that kit still contained the discontinued MM300 and not the MM325 that replaced it. Definitely still workable, but was a bit disappointed to find. Would recommend.

## Features

- VERSATILE FUNCTIONALITY: Measures AC/DC voltage up to 600V, 10A AC/DC current, 50MΩ resistance; additional features include continuity, temperature, capacitance, frequency/duty cycle and diode test
- LEAD-ALERT PROTECTION: LEDs on the meter illuminate to indicate proper test lead placement, enhancing accuracy and safety during measurements
- BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
- ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
- CONVENIENT FEATURES: Test lead holders on the back of the meter, kickstand and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
- DURABLE CONSTRUCTION: Built to withstand a 6.6-Foot (2 m) drop, ideal for use in basic and controlled electromagnetic environments such as residential, business, HVAC and light-industrial locations
- COMPLETE PACKAGE: Includes test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 2 x AAA batteries

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B57PFFYX |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #324 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Multi Testers |
| Brand | KLEIN TOOLS |
| Color | Orange/Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (6,669) |
| Date First Available | June 27, 2022 |
| Display Style | LCD |
| Finish | Brushed |
| Global Trade Identification Number | 00092644693748 |
| Included Components | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 14.6 ounces |
| Item dimensions L x W x H | 9.33 x 5.08 x 3.82 inches |
| Item model number | MM420 |
| Manufacturer | Klein Tools |
| Material | Blend |
| Measurement Accuracy | 600V AC/DC |
| Measurement Type | Multimeter |
| Min. Operating Voltage | 9 Volts |
| Part Number | MM420 |
| Pattern | Multimeter |
| Power Source | Battery Powered |
| Product Dimensions | 9.33 x 5.08 x 3.82 inches |
| Shape | Rectangular |
| Size | One Size |
| Special Features | Lead-Alert; Auto-Range; Min/Max Measurements; Backlight; Auto Power-Off; Data-Hold |
| Specification Met | Cat Iii 600v Safety Rating |
| Style | Auto-Ranging |
| UPC | 092644693748 |
| Upper Temperature Rating | 60 Degrees Celsius |

## Product Details

- **Brand:** KLEIN TOOLS
- **Color:** Orange/Black
- **Item Weight:** 14.56 ounces
- **Power Source:** Battery Powered
- **Style:** Auto-Ranging

## Images

![Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance - Image 1](https://m.media-amazon.com/images/I/51O0EAYj9aL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ precise and reliable digital multi-tester for pros!
*by N***N on November 13, 2025*

it’s incredibly reliable and easy to use. the auto-ranging feature makes measuring voltage, current, and resistance quick and accurate, while the clear digital display ensures readings are easy to read. the compact, sturdy design feels professional and durable, perfect for both job sites and home projects. overall, this multi-tester delivers precision, convenience, and durability in one essential tool. great battery life too!!

### ⭐⭐⭐⭐⭐ Very Nice Electrical Testing Kit
*by K***O on December 16, 2025*

An excellent test kit. Good selection of electrical tools for the home DIY for a reasonable cost. Did some initial testing after receiving and it appeared to work well. However have not had the news to test all settings on the MM (e.g. current). I was surprised that kit still contained the discontinued MM300 and not the MM325 that replaced it. Definitely still workable, but was a bit disappointed to find. Would recommend.

### ⭐⭐⭐⭐⭐ Klein tool must have
*by J***N on September 22, 2025*

Hey, the Klein 69149P is a fantastic choice for electricians or anyone looking for a reliable, all-in-one tool to handle electrical tasks. It’s especially handy for pros who want to save time and effort by having fewer tools to lug around! Durable , easy to use and has great battery life , great value.

## 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 Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-08*