--- 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: "€ 143.57" currency: EUR in_stock: true reviews_count: 6 category: "Klein Tools" url: https://www.desertcart.at/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v store_origin: AT region: Austria --- # 600V AC/DC voltage range 10A AC/DC current capacity 50 MΩ resistance measurement 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:** € 143.57 **Availability:** ✅ In Stock ## Summary > ⚙️ Master your measurements with Klein’s pro-grade MM420 multimeter! ## 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?** € 143.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/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 - • **Safety First:** Lead-Alert LEDs ensure correct test lead placement for worry-free use - • **Trusted by Pros:** Designed by electricians, backed by 4.7-star reviews and real-world reliability - • **Ready for the Field:** Includes rugged carrying case, thermocouple, and CAT III/IV safety-capped leads - • **All-in-One Precision:** Auto-ranging TRMS tech delivers accurate readings every time - • **Versatile Powerhouse:** 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 test leads and carrying case, it combines precision, safety, and versatility in a compact, durable design. ## 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 | #59,729 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #251 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 739 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 | 413 g | | Item Width | 1.78 Inches | | Item dimensions L x W x H | 23.7 x 12.9 x 9.7 centimeters | | Item weight | 413 g | | Manufacturer | KLEIN TOOLS | | Measurement Type | Multimeter | | Minimum Operating Voltage | 9 Volts | | Model | MM420 | | Number of Items | 1 | | Number of Packs | 1 | | 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 weight:** 0.91 Pounds - **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) ![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/61qtkmOaOxL.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/6180AVes-QL.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/51PPCchY4qL.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/61KJQVaGbBL.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.at/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v](https://www.desertcart.at/products/587845916-klein-tools-mm420-digital-multimeter-auto-ranging-trms-multimeter-600v) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-09-21*