--- product_id: 468635703 title: "Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead..." brand: "klein tools" price: "Ā£78.90" currency: GBP in_stock: true reviews_count: 13 category: "Klein Tools" url: https://www.desertcart.co.uk/products/468635703-klein-tools-mm450-slim-digital-multimeter-reverse-contrast-display-lead store_origin: GB region: United Kingdom --- # 600V AC/DC 10A Current Battery Powered Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead... **Brand:** klein tools **Price:** Ā£78.90 **Availability:** āœ… In Stock ## Summary > šŸ”§ Elevate Your Measurement Game! ## Quick Answers - **What is this?** Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead... by klein tools - **How much does it cost?** Ā£78.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/468635703-klein-tools-mm450-slim-digital-multimeter-reverse-contrast-display-lead) ## 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 - ā€¢ **Lead-Alert Safety:** Stay safe with LED indicators for proper lead placement. - ā€¢ **Rugged & Portable:** Designed to withstand drops and fit in your pocket effortlessly. - ā€¢ **Precision Engineering:** Experience accurate readings with TRMS auto-ranging technology. - ā€¢ **Versatile Measurement:** Master AC/DC voltage, current, resistance, and more with ease. - ā€¢ **High-Visibility Display:** See clearly in any lighting with a reverse-contrast LCD. ## Overview The Klein Tools MM450 Slim Digital Multimeter is a robust, battery-powered device designed for professionals. It measures AC/DC voltage up to 600V, 10A current, and 50MĪ© resistance, featuring a high-visibility reverse-contrast display and lead-alert protection for enhanced safety. With its durable construction and portable design, this multimeter is perfect for various applications, including HVAC, automotive, and light-industrial work. ## Description Klein Tools MM450 Multimeter is a TRMS auto-ranging slim 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. It features a high visibility, reverse contrast display with an optical sensor to automatically optimize viewing in dark or bright ambient light. The slim profile of the MM450 makes this meter almost the size of a cell phone and it conveniently fits into most pockets. The MM450 features the same quality leads you have come to expect from the Digital Multimeter line at Klein Tools. 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: Compact and good quality. - Small and compact. It takes AAA batteries and the fuses are easily accesible unlike the fluke ones. I wish I didn't waste my tome with Fluke all these years. The only negative, if you can call it that, if that it always defaults to mixed AC/DC mode. I never use those modes since can give false or inaccurate readings. So, set the dial and press the button one for AC, twice to work in DC. Luckily the auto shutoff keeps the last setting. Review: Good value! - I've been a fan of Klein Tools for years, so considering a Klein multimeter wasn't difficult at all. I've used mostly Fluke multimeters in my 40+ year carreer as a technician. They are considered the best of the best. With that accuracy, repeatability, and quality, you pay dearly! So I was looking for a second lower-cost meter. I was also looking for a reverse backlit display--white numerals on a black background. I'd looked at Milwaukee, but they do not include a diode check function. I chose the MM450 for it's features and price point. While I have not compared accuracy to other meters, published specs are similar to other more expensive meters. There is one minor issue in my review, and that is the white-on-black display needs to be viewed pretty much head-on for best quality. Depending on the tilt angle, there are positions where the display is very faded, almost to disappear. That might be an issue if you measuring in tight quarters or not able to look straight on otherwise. It comes with test and temperature probes, and fabric case. An optional rare-earth magnetic hanging strap is available. Besides voltage and current, it also measures resistance, capacitance and frequency, along with a peak hold function, making it an ideal meter for most service techs. One other minor detail...when in Auto scale mode, it can take up to 5 seconds for the reading to finally resolve. If you are troubleshooting something point to point and in a hurry, this may be an annoyance. However, if you turn off the Auto-scale mode, the readings display quite a bit faster. Given the display issue (and that might not be a problem for everyone) I'd give it a 4.5, if that were possible. But it's certainly better than a 4, so a 5 it is! ## Features - VERSATILE FUNCTIONALITY: Measures AC/DC voltage up to 600V, 10A AC/DC current, 50MĪ© 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 - REVERSE-CONTRAST DISPLAY: Large, high-visibility reverse-contrast LCD ensures improved viewability in all lighting conditions - ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements - PORTABLE DESIGN: Slim profile allows the multimeter to conveniently fit into most pockets, making it easy to carry and use on the go - DURABLE CONSTRUCTION: Built to withstand a 6.6-Foot (2 m) drop, perfect for use in facilities, maintenance, HVAC, residential, business, automotive, and light-industrial work - COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 2 x AAA batteries ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B6WW5ZX8 | | Best Sellers Rank | #15,881 in Automotive ( See Top 100 in Automotive ) #3 in Multimeters & Analyzers | | Brand | KLEIN TOOLS | | Brand Name | KLEIN TOOLS | | Color | Orange/Black | | Customer Reviews | 4.6 out of 5 stars 273 Reviews | | Global Trade Identification Number | 00092644693755 | | Included Components | Slim Digital Multimeter, TRMS Auto-Ranging, 600V, Temp | | Item Dimensions | 6.5 x 3.15 x 1.09 inches | | Item Length | 6.5 Inches | | Item Type Name | Building Material | | Item Weight | 9.2 ounces | | Item Width | 1.09 Inches | | Item dimensions L x W x H | 6.5 x 3.15 x 1.09 inches | | Manufacturer | Klein Tools | | Measurement Type | Multimeter | | Model | MM450 | | Part Number | MM450 | | Power Source | Battery Powered | | Specification Met | Cat Iii 600v, Ce, Ukca Certified | | Style | Slim Meter | | Style Name | Slim Meter | | UPC | 092644693755 | | Unit Count | 1.0 Count | | Warranty Description | Call vendor for warranty | ## Product Details - **Brand:** KLEIN TOOLS - **Power Source:** Battery Powered - **Style:** Slim Meter - **Color:** Orange/Black - **Item Weight:** 0.58 Pounds ## Images ![Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead... - Image 1](https://m.media-amazon.com/images/I/71bcxR6SiUL.jpg) ![Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead... - Image 2](https://m.media-amazon.com/images/I/81fgXfnALZL.jpg) ![Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead... - Image 3](https://m.media-amazon.com/images/I/811eYHYlDtL.jpg) ![Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead... - Image 4](https://m.media-amazon.com/images/I/81O2qPyIZNL.jpg) ![Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead... - Image 5](https://m.media-amazon.com/images/I/81ubmbBNX+L.jpg) ## Available Options This product comes in different **Size** options. ## 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. ## Customer Reviews ### ā­ā­ā­ā­ā­ Compact and good quality. *by B***T on April 25, 2026* Small and compact. It takes AAA batteries and the fuses are easily accesible unlike the fluke ones. I wish I didn't waste my tome with Fluke all these years. The only negative, if you can call it that, if that it always defaults to mixed AC/DC mode. I never use those modes since can give false or inaccurate readings. So, set the dial and press the button one for AC, twice to work in DC. Luckily the auto shutoff keeps the last setting. ### ā­ā­ā­ā­ā­ Good value! *by G***S on October 10, 2022* I've been a fan of Klein Tools for years, so considering a Klein multimeter wasn't difficult at all. I've used mostly Fluke multimeters in my 40+ year carreer as a technician. They are considered the best of the best. With that accuracy, repeatability, and quality, you pay dearly! So I was looking for a second lower-cost meter. I was also looking for a reverse backlit display--white numerals on a black background. I'd looked at Milwaukee, but they do not include a diode check function. I chose the MM450 for it's features and price point. While I have not compared accuracy to other meters, published specs are similar to other more expensive meters. There is one minor issue in my review, and that is the white-on-black display needs to be viewed pretty much head-on for best quality. Depending on the tilt angle, there are positions where the display is very faded, almost to disappear. That might be an issue if you measuring in tight quarters or not able to look straight on otherwise. It comes with test and temperature probes, and fabric case. An optional rare-earth magnetic hanging strap is available. Besides voltage and current, it also measures resistance, capacitance and frequency, along with a peak hold function, making it an ideal meter for most service techs. One other minor detail...when in Auto scale mode, it can take up to 5 seconds for the reading to finally resolve. If you are troubleshooting something point to point and in a hurry, this may be an annoyance. However, if you turn off the Auto-scale mode, the readings display quite a bit faster. Given the display issue (and that might not be a problem for everyone) I'd give it a 4.5, if that were possible. But it's certainly better than a 4, so a 5 it is! ### ā­ā­ā­ā­ā­ Great tool *by E***L on April 3, 2026* This works really well ## Frequently Bought Together - Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead Alert, Auto-Ranging TRMS, 600V AC/DC Voltage, Current, Resistance, Temp, Frequency, Continuity - Klein Tools 69417 Rare-Earth Magnetic Hanger, with Strap - Klein Tools 69381 Alligator Clip Test Leads, Heavy-Duty Banana Plug Replacement Leads, 3-Foot --- ## Why Shop on Desertcart? - šŸ›’ **Trusted by 1.3+ Million Shoppers** ā€” Serving international shoppers since 2016 - šŸŒ **Shop Globally** ā€” Access 737+ million products across 21 categories - šŸ’° **No Hidden Fees** ā€” All customs, duties, and taxes included in the price - šŸ”„ **15-Day Free Returns** ā€” Hassle-free returns (30 days for PRO members) - šŸ”’ **Secure Payments** ā€” Trusted payment options with buyer protection - ā­ **TrustPilot Rated 4.5/5** ā€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/468635703-klein-tools-mm450-slim-digital-multimeter-reverse-contrast-display-lead](https://www.desertcart.co.uk/products/468635703-klein-tools-mm450-slim-digital-multimeter-reverse-contrast-display-lead) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-27*