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The Klein Tools MM420 Digital Multimeter is a robust, auto-ranging TRMS device designed for professionals who demand accuracy and durability. Measuring up to 600V AC/DC voltage, 10A current, and 50 MΩ resistance, it features safety-enhancing Lead-Alert LEDs, a backlit display for low-light conditions, and a rugged build that withstands 2-meter drops. Complete with test leads, thermocouple, and batteries, it’s engineered for versatile use across residential, HVAC, and light industrial environments.

| Brand | KLEIN TOOLS |
| Power Source | Corded Electric |
| Style | Auto-Ranging |
| Colour | Black |
| Item Weight | 413 g |
| Item dimensions L x W x H | 23.7 x 12.9 x 9.7 Centimeters |
| Min. Operating Voltage | 9 Volts |
| Specification Met | Cat Iii 600v Safety Rating |
| Upper Temperature Rating | 60 Degrees Celsius |
| Measurement Type | Multimeter |
| UPC | 092644693748 |
| Manufacturer | KLEIN TOOLS |
| Global Trade Identification Number | 00092644693748 |
| Country of Origin | China |
| Model number | MM420 |
| Number of Memory Sticks | 1 |
| Special Feature | Lead-Alert; Auto-Range; Min/Max Measurements; Backlight; Auto Power-Off; Data-Hold |
| Product Dimensions | 23.7 x 12.9 x 9.7 cm; 412.77 g |
| Batteries | 2 AAA batteries required. (included) |
| Item model number | MM420 |
| Item Height | 3.82 Inches |
| Item Width | 5.08 Inches |
| Included Components | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Are batteries included? | Yes |
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