--- product_id: 587845916 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: "€ 139.33" currency: EUR in_stock: true reviews_count: 6 category: "Klein Tools" url: https://www.desertcart.be/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v store_origin: BE region: Belgium --- # 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:** € 139.33 **Availability:** ✅ In Stock ## Summary > 🔧 Power Your Precision, Own the Job ## 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?** € 139.33 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-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 - • **Field-Tested Reliability:** Designed by electricians for electricians, built to withstand real-world demands with CAT III/IV safety ratings. - • **All-in-One Precision Toolkit:** Auto-ranging TRMS tech delivers pinpoint accuracy across voltage, current, and resistance. - • **Safety First with Lead-Alert:** LED indicators ensure correct test lead placement, minimizing errors and boosting confidence on every job. - • **Versatility That Works Overtime:** Measures temperature, capacitance, frequency, duty cycle, continuity, and diodes—your all-in-one diagnostic partner. - • **Ready to Go, Right Out of the Box:** Complete kit includes carrying case, test leads with safety caps, thermocouple, and batteries—no delays, just results. ## Overview The Klein Tools MM420 is a professional-grade auto-ranging TRMS digital multimeter engineered for electricians and serious DIYers. It measures up to 600V AC/DC voltage, 10A AC/DC current, and 50 MΩ resistance, plus temperature, capacitance, frequency, and more. Featuring lead-alert safety LEDs and a comprehensive accessory kit, it combines rugged reliability with advanced functionality to keep you ahead in any electrical task. ## 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 Review: Klein Tools MM420 multimetr cyfrowy - Rewelacyjny multimetr,polecam również dla początkujących. ## 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 | #6,145 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Multi Testers | | Brand | KLEIN TOOLS | | Brand Name | KLEIN TOOLS | | Color | Orange/Black | | Colour | Orange/Black | | Compatible Devices | Test leads (included with the product) | | Customer Reviews | 4.7 out of 5 stars 679 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 | 0.11 Pounds | | Item Width | 1.78 Inches | | Item dimensions L x W x H | 23.7 x 12.9 x 9.7 centimeters | | Item weight | 0.11 Pounds | | 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 ![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/51hgJ2yCwqL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Automobile *by T***U on 16 September 2025* This is very good product ### ⭐⭐⭐⭐⭐ Klein Tools MM420 multimetr cyfrowy *by D***J on 16 December 2025* Rewelacyjny multimetr,polecam również dla początkujących. ### ⭐⭐⭐⭐⭐ Buena Calidad *by C***N on 13 February 2026* Buen producto y fácil de usar. ## 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-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v](https://www.desertcart.be/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-26*