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Internet # 206517333

Model # MM400

Store SKU # 362812

600V Auto Ranging Digital Multimeter

$5997
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  • Auto-ranging multimeter is CAT III 600 V safety rated
  • Meter measures up to 600 VAC/VDC voltage and 10 A AC/DC current
  • Electrical Tester for multi-purpose residential and industial use
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Product Details

Klein Tools MM400 Multimeter is an auto-ranging multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty-cycle, and test diodes and continuity. Klein Tools' Test and Measurement product line was exclusively designed from the ground up by electricians for electricians. Years of field research, combined with extensive input from electricians across America, inspired the development of meters and electrical testers loaded with innovative, time-saving features.
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Specifications

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Questions & Answers

78Questions
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Q:Does this product measure 20A DC? I'm not seeing any reference to it in the instructions, but everytime I enter it into my search parameters, this device appears. If not, does Home Depot sell a multimeter that switches to 20A DC?
by|Aug 27, 2023
1 Answer
Answer This Question

A:  The Klein Tools MM600 Multimeter reads up to 10A AC/DC current

by|Aug 28, 2023
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    Q:Does this come with alligator clip leads?
    by|Aug 26, 2023
    1 Answer
    Answer This Question

    A:  The leads do not include alligator clips

    by|Aug 29, 2023
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      Q:Does this supply power to a source
      by|Aug 25, 2023
      1 Answer
      Answer This Question

      A:  No, Klein Tools MM400 Multimeter is an auto-ranging multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty-cycle, and test diodes and continuity.

      by|Aug 25, 2023
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        Q:Would the Klein MM400 be a good option for someone starting out in hvac installs? 99% residential.
        by|May 8, 2023
        1 Answer
        Answer This Question

        A:  Yes. Klein Tools also recommends the MM450. It is a newer Multimeter that features a slim profile and reverse contrast LCD.

        by|May 18, 2023
          Showing 1-4 of 78
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          Customer Reviews

          4.4 out of 5
          (605)
          • 4.4
            out of 605 reviews
          • 87% recommend this product
          Filter by:
          Showing 1-10 of 605 reviews
          Value is off the charts great work tool
          This meter is tough an works great. I had to retire it an get a fluke as per work guidelines. This is my go to meter at home or if one breaks or anything for that matter can’t beat the price/quality wouldn’t trade it for anything
          by
            • Recommended
            Continuity Audio Issue
            I bought this meter for the ability to measure1000v and check continuity. I will have to return it to the store within the first week. The meter audio would not work loud enough like a light beep. The voltage readings were really slow in the pouch could've had a little compartments to put your parts in rather than always try to find somewhere else to store them. This meter is defective; however, in appearance to be well built and I'm just going to go back and get another one.
            by
              • Recommended
              This is a great multi-meter. Highly recommended to all tradesmen..
              This is a great multi-meter. Highly recommended to all tradesmen..
              by
                • Recommended
                Works well easy to read . Multifunction for a wide variety of applications.
                Works well easy to read . Multifunction for a wide variety of applications.
                by
                • Verified Purchase
                • Recommended
                1 found this review helpful
                This is my second Klein MM. I also still use my MM200 often. As a Biomedical equipment tech I fin...
                This is my second Klein MM. I also still use my MM200 often. As a Biomedical equipment tech I find Klein tools to be very reliable as well as user friendly. The accuracy and reliability are very important to me.
                by
                • Verified Purchase
                • Recommended
                2 found this review helpful
                Love it! It's light, it is housed in a rubber lining in the case of dropping it on pavement, and ...
                Love it! It's light, it is housed in a rubber lining in the case of dropping it on pavement, and it has a light! Also, on the rear of the multi-meter, it has these indention's that hold the multi-meter test probes! It's inexpensive at $50. You can't and will never go wrong with an investment in Klein Tools!
                by
                • Verified Purchase
                • Recommended
                2 found this review helpful
                Seems to work well, but I have to get used to what the symbols mean. I am not someone who does a...
                Seems to work well, but I have to get used to what the symbols mean. I am not someone who does a lot of electrical work, but it was still simple enough for me to start using right away. Only downside, it really should have come with a case or stow bag or something to put it in after use.
                by
                • Verified Purchase
                • Recommended
                Not great but... I didn't want to write a review, but after seeing so many people complaining abo...
                Not great but... I didn't want to write a review, but after seeing so many people complaining about the length of the probes I felt the need to respond. Folks, you need to remove the end caps on the probes, then there will be enough exposed metal to insert into an outlet. The 2mm of metal that is exposed with the caps on isn't intended to fit into an outlet. I am giving the meter two stars because after 4 months (perhaps only 10 uses) the meter doesn't produce any accurate readings. It turns on, continuity checks out fine, but put it on a voltage source and it jumps a little then reads zero. My $9 Harbor Freight meter has lasted 20 times as long. I only bought this one because I needed the min/max function for a science project. Hopefully Home Depot will replace this or at least give me store credit.
                by
                  15 found this review helpful
                  i like the auto ranging as i'm now 70 yrs young and trying to see the small lettering on most met...
                  i like the auto ranging as i'm now 70 yrs young and trying to see the small lettering on most meters is hard without getting my reading glass's and the beeping when i'm trying to find a short or an open circuit is nice but i wish it was a little loader but over all it's a good buy! i wish it had the clips to go with it as there are none in the store
                  by
                  • Verified Purchase
                  • Recommended
                  3 found this review helpful
                  Opened the plastic package, inserted batteries, turned onto ohmmeter, inserted probes into alliga...
                  Opened the plastic package, inserted batteries, turned onto ohmmeter, inserted probes into alligator clip attachments, clipped together red & black alligator clips - but nothing! Open circuit?! Pulled black lead out of alligator clip and found that the alligator clip attachment had come apart (a metal sleeve within the alligator clip attachment came out stuck to the probe) - not even the first use! I really can't say much for the quality of the rest of the meter but its not a great start and I purchased this model specifically because my application required these "handy" alligator clips. I'm going to return it before something else falls apart!
                  by
                    11 found this review helpful
                    Showing 1-10 of 605 reviews

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