--- 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: "€ 107.60" currency: EUR in_stock: true reviews_count: 6 category: "Klein Tools" url: https://www.desertcart.pt/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v store_origin: PT region: Portugal --- # 600V AC/DC Voltage 50 MΩ Resistance 10A AC/DC Current 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:** € 107.60 **Availability:** ✅ In Stock ## Summary > ⚙️ Master your measurements with precision and confidence! ## 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?** € 107.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/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 - • **Trusted by Pros:** Designed by electricians, backed by 4.7-star reviews from thousands of users - • **Ready for the Field:** Includes rugged carrying case, thermocouple, and CAT III/CAT IV safety-capped leads - • **Safety First, Always:** Lead-Alert LEDs ensure perfect test lead placement every time - • **All-in-One Powerhouse:** Auto-ranging TRMS accuracy for every measurement challenge - • **Versatility at Your Fingertips:** Measures voltage, current, resistance, temperature, capacitance, frequency & more ## Overview The Klein Tools MM420 is a professional-grade auto-ranging TRMS digital multimeter designed 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 complete kit with carrying case and thermocouple, it delivers reliable, accurate readings with industry-grade safety ratings (CAT III/IV). Trusted by thousands, it’s the essential tool 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: Automobile - This is very good product Review: 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 | | ASIN | B0B57PFFYX | | Batteries | 2 AAA batteries required. (included) | | Best Sellers Rank | #62,732 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #289 in Multi Testers | | Brand Name | KLEIN TOOLS | | Color | Orange/Black | | Country Of Origin | China | | Country of origin | China | | Customer Reviews | 4.7 4.7 out of 5 stars (564) | | Customer reviews | 4.7 4.7 out of 5 stars (564) | | Date First Available | 26 July 2022 | | Global Trade Identification Number | 00092644693748 | | Included Components | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp | | Is Discontinued By Manufacturer | No | | Item Dimensions | 23.7 x 12.9 x 9.7 centimeters | | Item Length | 6.41 Inches | | Item Type Name | Building Material | | Item Width | 1.78 Inches | | Item model number | MM420 | | Manufacturer | KLEIN TOOLS | | Manufacturer | KLEIN TOOLS | | Measurement Type | Multimeter | | Minimum Operating Voltage | 9 Volts | | Model | MM420 | | Power Source | Corded Electric | | Product Dimensions | 23.7 x 12.9 x 9.7 cm; 50 g | | Specification Met | Cat Iii 600v Safety Rating | | 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/51O0EAYj9aL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Automobile *by T***U on 16 September 2025* This is very good product ### ⭐⭐⭐⭐⭐ Review *by D***J on 16 December 2025* Rewelacyjny multimetr,polecam również dla początkujących. ### ⭐⭐⭐⭐⭐ Review *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.pt/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v](https://www.desertcart.pt/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-24*