---
product_id: 495852064
title: "Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance,Orange/Black"
brand: "klein tools"
price: "€ 173.54"
currency: EUR
in_stock: true
reviews_count: 3
category: "Klein Tools"
url: https://www.desertcart.it/products/495852064-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v
store_origin: IT
region: Italy
---

# 600V AC/DC voltage range 50 MΩ resistance measurement 10A AC/DC current capacity Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance,Orange/Black

**Brand:** klein tools
**Price:** € 173.54
**Availability:** ✅ In Stock

## Summary

> ⚡ Master every measurement with Klein’s MM420 — precision, power, and protection in your palm!

## 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,Orange/Black by klein tools
- **How much does it cost?** € 173.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/495852064-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

- • **Hands-Free Convenience:** Integrated test lead holders, kickstand, and optional magnetic hanger keep your hands free and workflow smooth.
- • **Precision Meets Safety:** Auto-ranging TRMS tech with Lead-Alert LEDs ensures spot-on readings and foolproof test lead placement.
- • **Built for the Real World:** Rugged design survives 2-meter drops, perfect for demanding residential, HVAC, and light industrial environments.
- • **Visibility in Any Condition:** Backlit LCD display guarantees crystal-clear readings even in dimly lit workspaces.
- • **All-in-One Diagnostic Powerhouse:** Measures voltage, current, resistance, temperature, capacitance, frequency, duty cycle, and diode continuity—your ultimate troubleshooting sidekick.

## Overview

The Klein Tools MM420 is a professional-grade auto-ranging TRMS digital multimeter designed for accurate measurement of up to 600V AC/DC voltage, 10A AC/DC current, and 50 MΩ resistance. Featuring advanced safety Lead-Alert LEDs, a backlit display for low-light visibility, and rugged durability with a 2-meter drop rating, it’s engineered for versatile use in residential, HVAC, and light industrial settings. This all-in-one tool also measures temperature, capacitance, frequency, duty cycle, and diode continuity, making it an indispensable device for precise diagnostics and hands-free operation.

## Description

Product 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 Safety Warning Do not use the meter during electrical storms or in wet weather, and do not use the meter or test leads if they appear to be damaged.

Review: Does not come with carry case - Multimeter is good and so are its functions. However it does not come with a carry case as stated. False advertising
Review: Inadequate - Bought for my husband. But not impressed. He found inadequate.

## Features

- COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 2 x AAA batteries
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B57PFFYX |
| Best Sellers Rank | 97,492 in DIY & Tools ( See Top 100 in DIY & Tools ) 219 in Multi Testers |
| Brand | KLEIN TOOLS |
| Colour | Orange/Black |
| Country Of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 755 Reviews |
| Global Trade Identification Number | 00092644693748 |
| Included Components | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Item Dimensions | 23.7 x 12.9 x 9.7 centimetres |
| Item Type Name | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Item dimensions L x W x H | 23.7 x 12.9 x 9.7 centimetres |
| Manufacturer | Klein Tools |
| Measurement Type | Multimeter |
| Min. Operating voltage | 9 Volts |
| Minimum Operating Voltage | 9 Volts |
| Model Number | MM420 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Specification Met | Cat Iii 600v Safety Rating |
| Style | w/Lead Alert |
| Style Name | w/Lead Alert |
| UPC | 092644693748 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 1000 Degrees Celsius |

## Product Details

- **Brand:** KLEIN TOOLS
- **Colour:** Orange/Black
- **Item dimensions L x W x H:** 23.7 x 12.9 x 9.7 centimetres
- **Power source:** Battery Powered
- **Style:** w/Lead Alert

## Images

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

## Customer Reviews

### ⭐⭐⭐ Does not come with carry case
*by V***1 on 17 May 2025*

Multimeter is good and so are its functions. However it does not come with a carry case as stated. False advertising

### ⭐ Inadequate
*by H***V on 18 October 2025*

Bought for my husband. But not impressed. He found inadequate.

### ⭐⭐⭐⭐⭐ Review
*by M***E on 5 January 2026*

Does exactly what I bought it for

## 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 Italy*
*Store origin: IT*
*Last updated: 2026-03-19*