








⚡ Power Your Precision, Own the Job!
The Klein Tools MM420 is a robust, auto-ranging TRMS digital multimeter designed for professionals who demand accuracy and safety. With a 600V AC/DC range, 10A current capacity, and 50MΩ resistance measurement, it covers a broad spectrum of electrical diagnostics. Its lead-alert system and CAT III/IV safety ratings prioritize user protection, while the rugged build and versatile measurement functions make it ideal for residential, HVAC, and light industrial use.












| ASIN | B0B57PFFYX |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Required? | Yes |
| Batteries included? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | 100,552 in DIY & Tools ( See Top 100 in DIY & Tools ) 273 in Multi Testers |
| Colour | Orange/Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (683) |
| Date First Available | 7 Dec. 2022 |
| Display style | LCD |
| Included components | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Item Package Quantity | 1 |
| Item Weight | 413 g |
| Item model number | MM420 |
| Manufacturer | Klein Tools |
| Material | Blend |
| Measurement Accuracy | 600V AC/DC |
| Part number | MM420 |
| Pattern | Multimeter |
| Power source type | Battery Powered |
| Product Dimensions | 23.7 x 12.9 x 9.7 cm; 412.77 g |
| Size | One Size |
| Specification met | Cat Iii 600v Safety Rating |
| Style | w/Lead Alert |
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