







🛠️ Power Your Precision, Own the Job Site
The Klein Tools MM400 is a professional-grade digital multimeter designed for millennial managers who demand accuracy and durability. Featuring auto-ranging up to 600V AC/DC, a 4000-count LCD display, and a robust CAT III 600V safety rating, it’s built to withstand drops and daily wear. This all-in-one tester measures voltage, current, capacitance, frequency, temperature, and more, making it the ultimate tool for residential, business, and light-industrial environments. Ready to use right out of the box with included accessories, it’s the smart choice for professionals who refuse to compromise.






| Brand | KLEIN TOOLS |
| Power Source | Battery Powered |
| Style | Standard |
| Color | Orange |
| Item Weight | 8.2 Ounces |
| Item dimensions L x W x H | 1.78 x 3.07 x 6 inches |
| Specification Met | Electromagnetic |
| Measurement Type | Multimeter |
| Maximum Operating Voltage | 600 Volts |
| UPC | 092644690211 |
| Manufacturer | Klein Tools |
| Global Trade Identification Number | 00092644690211 |
| Part Number | MM400 |
| Item Weight | 8.2 ounces |
| Product Dimensions | 1.78 x 3.07 x 6 inches |
| Item model number | MM400 |
| Batteries | 2 AAA batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Size | Auto Ranging/Temperature, Capacitance, frequency |
| Material | Plastic |
| Pattern | Multimeter |
| Voltage | 600 Volts |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Measurement Accuracy | 98% |
| Display Style | 4000 Count LCD |
| Included Components | Test Leads, Batteries, Thermocouple, and User Manual |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Description Pile | 2 x AAA |
| Warranty Description | 1 year manufacturer |
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