






🛠️ Power your precision with Klein’s pro-grade multimeter — don’t get left in the dark!
The Klein Tools MM325 is a professional manual-ranging digital multimeter designed for electricians and serious DIYers. It measures AC/DC voltage up to 600V, DC current up to 10A, and resistance up to 2MΩ, with additional functions for battery, diode, and continuity testing. Featuring a backlit LCD for low-light visibility, lead-alert LEDs for safe and accurate testing, and a rugged build tested to withstand 6.6-foot drops, this tool combines precision, safety, and durability. Included accessories and hands-free features like a kickstand and magnetic hanger make it a versatile essential for residential, commercial, and light industrial use.












| ASIN | B0B57L9FNL |
| Best Sellers Rank | 65,363 in DIY & Tools ( See Top 100 in DIY & Tools ) 167 in Multi Testers |
| Brand | KLEIN TOOLS |
| Colour | Orange/ Black |
| Customer Reviews | 4.7 out of 5 stars 2,259 Reviews |
| Global Trade Identification Number | 00092644693731 |
| Included Components | Multimeter, Voltage Tester |
| Item Dimensions | 23.7 x 12.9 x 9.7 centimetres |
| Item Length | 6.41 Inches |
| Item Type Name | Building Material |
| Item Weight | 0.87 Pounds |
| Item Width | 3.13 Inches |
| Item dimensions L x W x H | 23.7 x 12.9 x 9.7 centimetres |
| Item height | 3.82 inches |
| Item weight | 0.87 Pounds |
| Manufacturer | Klein Tools |
| Maximum Operating Voltage | 600 Volts |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 9 Volts |
| Model Number | MM325 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Specification Met | Cat Iii 600v Safety Rating |
| Style | Protection,Safety |
| Style Name | Protection,Safety |
| UPC | 092644693731 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 60 Degrees Celsius |
D**.
For a few pounds more than a battery tester I have a reliable multimeter
I needed a good battery tester, having experienced that the usual cheap ones were not very reliable. I decided that I may as well invest in a multimeter that could test batteries. I'm very pleased with this - exceptional quality for the price (YouTube reviews attest to build quality) - and it will test 1.5V / 9V batteries 'under load' to give an accurate remaining voltage reading. You have to use the supplied leads to 'touch' the battery +/-contacts so perhaps not as convenient as many specific battery testers, but this multimeter does have a built-in stand which means you have both hands free.
M**.
Perfect for all my jobs
This is the second multimeter I have purchased. I wanted to test an earthing sheet and the one purchased from Halfords wouldn’t test low enough. This one did the job as much more accurate and a much sturdier feeling device. It has since proved itself again with vehicle fuse checking saving me garage costs. Would thoroughly recommend.
A**A
Amazing Multimeter for the Price
Klein Tools MM325 Multimeter, Digital Manual-Ranging 600V AC/DC Voltage Tester: Love my new Klein multi-meter, very accurate readings, nice clear screen, 'normal' batteries, and the leads are good quality. I bought an off-brand hard fabric case for it to keep the leads in good nick. Lovely multi-meter, and just as good as the bigger more-expensive "F" brand units.
P**M
Great
Good quality.
A**F
First class
Excellent meter, great price too!
V**W
Good multimeter
As described
G**N
A quality product
A well designed quality product with clear, simple controls.
J**.
Very good meter.
Brilliant of kit
Trustpilot
4 days ago
2 weeks ago