--- product_id: 20785207 title: "Klein Tools MM400 Multimeter, Digital Auto Ranging, AC/DC Voltage, Current, Capacitance, Frequency, Duty-Cycle, Diode, Continuity, Temp 600V" brand: "klein tools" price: "€ 158.80" currency: EUR in_stock: true url: https://www.desertcart.be/products/20785207-klein-tools-mm400-multimeter-digital-auto-ranging-ac-dc-voltage store_origin: BE region: Belgium --- # 600V AC/DC voltage range Auto-ranging for precise measurements CAT III 600V safety rating Klein Tools MM400 Multimeter, Digital Auto Ranging, AC/DC Voltage, Current, Capacitance, Frequency, Duty-Cycle, Diode, Continuity, Temp 600V **Brand:** klein tools **Price:** € 158.80 **Availability:** ✅ In Stock ## Summary > ⚡ Power Your Precision, Own the Jobsite! ## Quick Answers - **What is this?** Klein Tools MM400 Multimeter, Digital Auto Ranging, AC/DC Voltage, Current, Capacitance, Frequency, Duty-Cycle, Diode, Continuity, Temp 600V by klein tools - **How much does it cost?** € 158.80 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/20785207-klein-tools-mm400-multimeter-digital-auto-ranging-ac-dc-voltage) ## 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 - • **Ready Out of the Box:** Includes test leads, thermocouple, batteries, and manual—gear up instantly. - • **Safety First, Always:** CAT III 600V rating ensures maximum protection in demanding environments. - • **Built Tough for the Jobsite:** Drop-tested to 3.3 feet and engineered for daily professional wear and tear. - • **All-in-One Diagnostic Powerhouse:** Test capacitance, frequency, duty-cycle, diodes, continuity, and temperature seamlessly. - • **Pro-Level Voltage & Current Mastery:** Measure up to 600V AC/DC and 10A current with confidence and precision. ## Overview The Klein Tools MM400 is a rugged, professional-grade digital multimeter designed for accurate auto-ranging measurements up to 600V AC/DC and 10A current. It offers comprehensive testing capabilities including capacitance, frequency, duty-cycle, diode, continuity, and temperature, all backed by a CAT III 600V safety rating and drop-tested durability. Perfectly equipped with test leads, thermocouple, and batteries, it’s built to meet the demands of residential, business, and light-industrial environments. ## Description Proudly made for professionals, the 5/32-Inch Journeyman Hex T-Handle from Klein Tools delivers more torque to the fasteners than standard hex keys. Klein hex-keys are the tools professionals cannot afford to be without. Heat-treated and tempered for superior strength and durability, Klein hex-keys are designed for a precise fit in sockets, preventing slippage and stripping of the socket. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857. ## Features - Multimeter measures up to 600V AC/DC voltage, 10A AC/DC current and 40 MOhms resistance - Electrical tester measures temperature, capacitance, frequency, duty-cycle, and test diodes and continuity - CAT III 600V safety rating - Built to withstand a 3.3-foot (1 m) drop and withstand daily wear and tear on the job site - Low battery indicator and easily accessible battery compartment - For use in basic and controlled electromagnetic environments such as residential, business and light-industrial locations - Includes test leads, thermocouple with adapter, batteries and user manual ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B018EXZO8M | | Best Sellers Rank | #321,290 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #478 in Multi Testers | | Brand | KLEIN TOOLS | | Brand Name | KLEIN TOOLS | | Color | Orange | | Customer Reviews | 4.6 out of 5 stars 4,164 Reviews | | Global Trade Identification Number | 00092644690211 | | Included Components | Test Leads, Batteries, Thermocouple, and User Manual | | Item Dimensions | 1.78 x 3.07 x 6 inches | | Item Type Name | Klein Tools MM400 Multimeter, Digital Auto Ranging, AC/DC Voltage, Current, Capacitance, Frequency, Duty-Cycle, Diode, Continuity, Temp 600V | | Item Weight | 8.2 Ounces | | Item dimensions L x W x H | 1.78 x 3.07 x 6 inches | | Manufacturer | Klein Tools | | Maximum Operating Voltage | 600 Volts | | Measurement Type | Multimeter | | Model | MM400 | | Part Number | MM400 | | Power Source | Battery Powered | | Specification Met | Electromagnetic | | Style | Standard | | Style Name | Standard | | UPC | 092644690211 | | Unit Count | 1.0 Count | | Warranty Description | 1 year manufacturer | ## Product Details - **Brand:** KLEIN TOOLS - **Color:** Orange - **Item Weight:** 8.2 Ounces - **Power Source:** Battery Powered - **Style:** Standard ## Images ![Klein Tools MM400 Multimeter, Digital Auto Ranging, AC/DC Voltage, Current, Capacitance, Frequency, Duty-Cycle, Diode, Continuity, Temp 600V - Image 1](https://m.media-amazon.com/images/I/612AeR7wvkL.jpg) ## Questions & Answers **Q: Is this meter made in usa and also can it be used for household and automobile purposes.** A: Made in China. Klein says of the MM400: "For use in basic and controlled electromagnetic environments such as residential, business and light-industrial locations." I've used it for residential and automobile purposes. **Q: Does it measure LoZ voltage?** A: MM400 does not have a LoZ function, and operating instructions are mute with respect to measuring LoZ. Klein Tools has other multimeter models that have a LoZ function. **Q: Does it come with a case?** A: Mine did not come with a case, but you can order one. Look at the bottom of the listing at "frequently bought together" or something like that verbiage to show what case to order. I prefer a hard case, so I did not order the soft zipper one. **Q: Can this multimeter test run capacitors?** A: Probably not, as it's high range on capacitance measurement is only 200 microfarad. Run capacitors are typically in the millifarad range for any decent sized motors, like HVAC. ## Frequently Bought Together - Klein Tools MM400 Multimeter, Digital Auto Ranging, AC/DC Voltage, Current, Capacitance, Frequency, Duty-Cycle, Diode, Continuity, Temp 600V - KingSung Hard Case Compatible with Klein Tools MM400/MM300/MM200/ET140/MM720 Digital Multimeter (Only Case), 1 Pack - Klein Tools 69381 Alligator Clip Test Leads, Heavy-Duty Replacement Meter Leads, for All Meters Using Banana Plug Meter Leads, 3-Foot --- ## 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/20785207-klein-tools-mm400-multimeter-digital-auto-ranging-ac-dc-voltage](https://www.desertcart.be/products/20785207-klein-tools-mm400-multimeter-digital-auto-ranging-ac-dc-voltage) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-21*