

🔧 Power Your Precision with Klein’s Rugged Reliability!
The Klein Tools MM325 is a professional-grade manual-ranging multimeter designed for electricians and technicians. It measures AC/DC voltage up to 600V, DC current up to 10A, and resistance up to 2MΩ, with additional functions including continuity, diode, and battery testing. Featuring Lead-Alert safety LEDs, a backlit LCD for low-light visibility, and a durable build that withstands 6.6-foot drops, this tool combines precision, safety, and ruggedness. Compact and user-friendly, it includes test lead holders, a kickstand, and optional magnetic hanger for hands-free operation, making it an essential, reliable companion for both professional and DIY electrical work.












| ASIN | B0B57L9FNL |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #524 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Multi Testers |
| Brand | KLEIN TOOLS |
| Color | Orange/ Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,424) |
| Date First Available | June 27, 2022 |
| Display Style | LCD |
| Finish | Brushed |
| Global Trade Identification Number | 00092644693731 |
| Included Components | Multimeter, Voltage Tester |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 13.9 ounces |
| Item dimensions L x W x H | 9.33 x 5.08 x 3.82 inches |
| Item model number | MM325 |
| Manufacturer | Klein Tools |
| Material | Blend |
| Maximum Operating Voltage | 600 Volts |
| Measurement Accuracy | +/- 2% |
| Measurement Type | Multimeter |
| Min. Operating Voltage | 9 Volts |
| Part Number | MM325 |
| Pattern | Tester |
| Power Source | Battery Powered |
| Product Dimensions | 9.33 x 5.08 x 3.82 inches |
| Shape | Rectangular |
| Size | One Size |
| Special Features | Lead Alert; Backlight; Auto Power-Off; Data Hold |
| Specification Met | Cat Iii 600v Safety Rating |
| Style | Manual-Ranging |
| UPC | 092644693731 |
| Upper Temperature Rating | 60 Degrees Celsius |
A**R
Excellent Meter.
I love this meter. I use it everyday in my work as a technician. It hasn't failed me yet. It's easy to use and seems to be accurate. It replaced my $300 fluke which bit the dust after so many years of excellent service. This Klein works just as good. It is a little bit smaller than my Fluke was and therefore fits better into my tool pouch pocket. The case is very durable and the screen lights up well. It is a very good value for the money.
S**N
Great Quality Multimeter for the Price
I’ve been using the Klein Tools MM325 Multimeter for a while now, and I’m really impressed with how well it performs for both DIY and professional use. The build quality is solid—typical of Klein Tools—and it feels durable enough to handle daily use in a toolbox or on a job site. The display is clear and easy to read, even in lower light. The auto-ranging feature works accurately and saves a lot of time when switching between different measurements. It handles voltage, continuity, and resistance testing reliably, and the leads are sturdy with good flexibility. One of my favorite features is the backlight and data hold function—it’s a small thing, but it makes a big difference when working in tight or dark spaces. The battery life has been great so far, and the protective rubber case gives it a rugged feel that inspires confidence. If you need a dependable, mid-range multimeter without spending a fortune, the MM325 is a fantastic choice. Klein’s attention to detail really shows here. Pros: Sturdy and well-built Accurate readings Clear backlit display Great value for the price Cons: Doesn’t measure milliamps or microamps (not a dealbreaker for most) Slightly bulky for small tool pouches Verdict: Highly recommended for electricians, HVAC techs, or DIYers who want reliability and ease of use without going for high-end professional meters.
A**.
Great for beginner troubleshooters.
Excellent multimeter especially for beginners. Simple to use , inexpensive, and durable . You may need to buy longer leads for it depending on application.
J**L
Great product, great value.
Great multimeter. Has a lot of functions, very easy to use, and even tells you where to put the leads for any particular setting. Highly recommend.
E**U
recommended buy for electrician
solid meter, but I had to exchange it due to shipping box damage
N**.
Great product
Works as needed, definitely recommend this product over others. Straight forward and easy to use
E**C
Solid, dependable, accurate.
DIYer+ I’ve had this about a year, great unit, solid construction, great readability. Always trust Klein Tools. I had an electrician by my place testing voltages with a top of line pro meter. Same readings as this.
A**R
Great for DIYers!
First, this ~$20 machine easily saved me $500. I have no experience in electrical panels either. I watched a quick youtube video on how to check circuit breaker power and bingo. I had power missing in part of my house and no breakers were tripped. All the breakers had power, or at least inside the house. Checked the outside breaker box, no breakers were labeled btw. Four switches didn't have power, and I discovered a separate trip switch. Turned that trip switch off, got power to the four. Then my stove didn't have power (the only thing left without power). I used the multimeter to check the plug-in for the stove and it didn't have power either. Used the multimeter to check the current in the power cord of the stove just in case, power cord was fine. Went back to the outside breaker box, turns out the "trip switch" wasn't a trip switch. Turned that back on, and boom power back to everything. Long story short, I used this multimeter with ease. It did the job, helped me trial and error breakers, wires and plug ins with no problem. Highly recommend for routine house electrical problems.
B**B
I had a cheap multimeter before that basically fell apart. This Klein model seems to be well made and has all functions that I will use. The digital display is easy to read and the automatic shutoff works as advertised - already tested that feature - 🙄. For what I will be doing with this unit, I’m glad I purchased this one.
S**V
Doing its job. Good quality.
A**F
Excellent meter, great price too!
G**O
Se siente de buena calidad los materiales, es de facil acceso la pila y los fusibles y es de buen tamaño no esta demasiado grande ni demasiado pequeño
J**D
Bra multimeter, rikligt med funktioner.
Trustpilot
2 months ago
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