--- product_id: 587845916 title: "MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance, Orange/Black" brand: "klein tools" price: "€ 139.63" currency: EUR in_stock: true reviews_count: 1 category: "Klein Tools" url: https://www.desertcart.be/products/587845916-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v-ac-dc store_origin: BE region: Belgium --- # 600V AC/DC voltage range 10A AC/DC current capacity 50 MΩ resistance measurement MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance, Orange/Black **Brand:** klein tools **Price:** € 139.63 **Availability:** ✅ In Stock ## Summary > 🔧 Master every measurement with Klein’s pro-grade MM420 multimeter—because precision is power. ## Quick Answers - **What is this?** 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?** € 139.63 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/587845916-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v-ac-dc) ## 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 - • **Trusted by Experts:** Designed by electricians, for electricians—join thousands who rely on Klein Tools for dependable, time-saving diagnostics. - • **Built for the Field:** Includes rugged carrying case, CAT III/CAT IV safety-capped test leads, and thermocouple for versatile, on-the-go use. - • **Safety First, Always:** Lead-Alert LEDs ensure perfect test lead placement, minimizing errors and maximizing confidence on every job. - • **Power Meets Portability:** Compact 50g design with AAA batteries included—ready to deliver accurate readings wherever your work takes you. - • **All-in-One Precision Toolkit:** Auto-ranging TRMS multimeter with temperature, capacitance, frequency & diode testing—engineered for pros. ## Overview The Klein Tools MM420 is a professional-grade auto-ranging TRMS digital multimeter offering 600V AC/DC voltage, 10A AC/DC current, and 50 MΩ resistance measurements. It features advanced functions including temperature, capacitance, frequency, duty cycle, diode, and continuity testing. Designed with safety in mind, it includes Lead-Alert LEDs and CAT III/CAT IV rated test leads, all packed in a durable carrying case. Lightweight and portable, this tool is trusted by electricians nationwide for accurate, reliable field 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: Automobile - This is very good product ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B57PFFYX | | Best Sellers Rank | #56,014 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #260 in Multi Testers | | Brand | KLEIN TOOLS | | Brand Name | KLEIN TOOLS | | Color | Orange/Black | | Colour | Orange/Black | | Country Of Origin | China | | Customer Reviews | 4.7 out of 5 stars 596 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 centimeters | | Item Length | 6.41 Inches | | Item Type Name | Building Material | | Item Weight | 50 g | | Item Width | 1.78 Inches | | Item dimensions L x W x H | 23.7 x 12.9 x 9.7 centimeters | | Item weight | 50 g | | Manufacturer | KLEIN TOOLS | | Measurement Type | Multimeter | | Minimum Operating Voltage | 9 Volts | | Model | MM420 | | Part Number | MM420 | | Power Source | Corded Electric | | Power source | Corded Electric | | Specification Met | Cat Iii 600v Safety Rating | | Style | w/Lead Alert | | Style Name | w/Lead Alert | | UPC | 092644693748 | | Unit Count | 1 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 centimeters - **Power source:** Corded Electric - **Style:** w/Lead Alert ## Images ![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/51hgJ2yCwqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Automobile *by T***U on 16 September 2025* This is very good product ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/587845916-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v-ac-dc](https://www.desertcart.be/products/587845916-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v-ac-dc) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-15*