--- 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: "€ 116.52" currency: EUR in_stock: true reviews_count: 13 category: "Klein Tools" url: https://www.desertcart.fr/products/463567951-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v store_origin: FR region: France --- # 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 **Brand:** klein tools **Price:** € 116.52 **Availability:** ✅ In Stock ## Summary > 🔧 Power Your Precision, Own Every Measurement! ## 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?** € 116.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/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 - • **All-Inclusive Kit:** Comes complete with CAT III/IV safety-capped leads, thermocouple, batteries, and instructions—ready out of the box. - • **Safety First, Always:** Lead-Alert LEDs ensure correct test lead placement, minimizing errors and maximizing confidence. - • **Hands-Free Efficiency:** Built-in test lead holders, kickstand, and optional magnetic hanger free your hands for multitasking mastery. - • **Precision Meets Power:** True RMS and auto-ranging tech deliver lightning-fast, accurate readings every time. - • **Work Anywhere, Anytime:** Backlit LCD display and rugged 6.6-ft drop-proof design keep you going in any environment. ## Overview The Klein Tools MM420 is a professional-grade digital multimeter featuring auto-ranging True RMS technology for precise AC/DC voltage (up to 600V), current (up to 10A), and resistance (up to 50 MΩ) measurements. Designed by electricians for electricians, it includes safety-enhancing lead-alert LEDs, a backlit display for low-light conditions, and a rugged build that withstands 6.6-foot drops. With convenient hands-free features and a comprehensive accessory kit, it’s the ultimate tool for reliable, accurate diagnostics in residential, commercial, and light industrial settings. ## 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. ## 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 | | Best Sellers Rank | #4,694 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Multi Testers | | Brand | KLEIN TOOLS | | Brand Name | KLEIN TOOLS | | Color | Orange/Black | | Customer Reviews | 4.8 out of 5 stars 1,096 Reviews | | Global Trade Identification Number | 00092644693748 | | Included Components | Digital Multimeter, Auto-Ranging, 600V | | Item Dimensions | 9.33 x 5.08 x 3.82 inches | | Item Type Name | Building Material | | Item Weight | 0.11 Pounds | | Item dimensions L x W x H | 9.33 x 5.08 x 3.82 inches | | Manufacturer | Klein Tools | | Measurement Type | Multimeter | | Minimum Operating Voltage | 9 Volts | | Model | MM420 | | Part Number | MM420 | | Power Source | Battery Powered | | Specification Met | Cat Iii 600v Safety Rating | | Style | Auto-Ranging | | Style Name | Auto-Ranging | | UPC | 092644693748 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 60 Degrees Celsius | | Warranty Description | Call vendor for warranty | ## Product Details - **Brand:** KLEIN TOOLS - **Color:** Orange/Black - **Item dimensions L x W x H:** 9.33 x 5.08 x 3.82 inches - **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) ![Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance - 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 - 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 - 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 - Image 5](https://m.media-amazon.com/images/I/61JV+XD63SL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by Z***H on March 26, 2026* ### ⭐⭐⭐⭐⭐ Review *by N***N on November 13, 2025* ### ⭐⭐⭐⭐⭐ Review *by T***0 on April 14, 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 --- ## 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.fr/products/463567951-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v](https://www.desertcart.fr/products/463567951-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-05-17*