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⚙️ Master your measurements with Klein’s powerhouse multimeter—don’t get left in the dark!
The Klein Tools MM420 is a professional-grade, auto-ranging TRMS digital multimeter designed for precision and durability. It measures up to 600V AC/DC voltage, 10A current, 50MΩ resistance, and temperature up to 1000°C, with added features like capacitance, frequency, and diode testing. Built tough to survive 2-meter drops and equipped with safety-focused Lead-Alert LEDs and a backlit display, it’s engineered for demanding residential, commercial, and light industrial environments.












| ASIN | B0B57PFFYX |
| Best Sellers Rank | 78,869 in DIY & Tools ( See Top 100 in DIY & Tools ) 136 in Multi Testers |
| Brand | KLEIN TOOLS |
| Colour | Orange/Black |
| Compatible Devices | Test leads (included with the product) |
| Customer Reviews | 4.7 4.7 out of 5 stars (704) |
| Global Trade Identification Number | 00092644693748 |
| Included Components | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Item Dimensions | 23.7 x 12.9 x 9.7 centimetres |
| Item Type Name | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Item Weight | 0.11 Pounds |
| Manufacturer | Klein Tools |
| Manufacturer Part Number | MM420 |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 9 Volts |
| Model Number | MM420 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Battery Powered |
| Product Warranty | 1 year manufacturer |
| Specification Met | Cat Iii 600v Safety Rating |
| Style Name | w/Lead Alert |
| UPC | 092644693748 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 1000 Degrees Celsius |
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