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⚙️ Power up your precision — the Klein MM420 is the pro’s must-have multimeter!
The Klein Tools MM420 Digital Multimeter is a robust, auto-ranging TRMS device designed for professionals who demand accuracy and durability. It measures up to 600V AC/DC voltage, 10A AC/DC current, and 50 MΩ resistance, with added functions like temperature, capacitance, frequency, and diode testing. Featuring lead-alert safety LEDs, a backlit display, and a rugged build that withstands 6.6-foot drops, it’s engineered for reliable performance in residential, commercial, HVAC, and light industrial environments. The complete kit includes safety-capped test leads, a thermocouple, and batteries, making it a ready-to-use essential for electricians and technicians alike.












| ASIN | B0B57PFFYX |
| Best Sellers Rank | #4,529 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Multi Testers |
| Brand Name | KLEIN TOOLS |
| Color | Orange/Black |
| Compatible Devices | Test leads (included with the product) |
| Customer Reviews | 4.8 4.8 out of 5 stars (645) |
| Global Trade Identification Number | 00092644693748 |
| Included Components | Digital Multimeter, Auto-Ranging, 600V |
| Item Dimensions | 9.33 x 5.08 x 3.82 inches |
| Item Type Name | Building Material |
| Item Weight | 1.76 ounces |
| Manufacturer | Klein Tools |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 9 Volts |
| Model | MM420 |
| Part Number | MM420 |
| Power Source | Battery Powered |
| Specification Met | Cat Iii 600v Safety Rating |
| Style Name | Auto-Ranging |
| UPC | 092644693748 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 60 Degrees Celsius |
| Warranty Description | Call vendor for warranty |
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