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Klein Tools

Model # MM200

Internet # 202521267

Store SKU # 362812

Digital Multimeter

This item has been discontinued.
The Home Depot no longer carries this specific product.

$48.97 /each




Model # MM200

Internet # 202521267

Store SKU # 362812

The Klein Tools Digital Multimeter is a helpful device to have if you are looking to achieve accurate voltage readings. It features a backlit LCD display that is easy see readings and will shut off after a set amount of time in order to conserve energy. The internal range automatically adjusts to offer you improved readings.

  • Measures voltage and indicates DC polarity
  • Low battery indicator
  • Data hold feature saves measurements for later viewing
  • Audible Alert
  • Auto shut-off feature extends battery life by conserving power
  • CAT rating - CAT III 600-Volt
  • 9-volt battery included
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Product Depth (in.) 
1.75 in 
Product Height (in.) 
5.75 in 
Product Width (in.) 
2.75 in 
Audible Alert 
Auto Ranging 
Batteries Included 
Battery Charger Included 
Battery Power Type 
Battery Size 
Case Included 
Category Rating 
Control Type 
Data Log/Record 
Data hold 
Display Type 
Dual voltage indication 
Integral lead storage 
Interchangeable leads 
Low Battery Indicator 
Noncontact detection 
Number of Batteries Required 
Number of Functions 
Number of Ranges 
Product Weight (lb.) 
0.5225 lb 
Reference Scale Included 
Test Meter Type 
Tools Product Type 
Test Meter 
Vibration Alert 
Visual Alert 
Voltage (volts) 
Warranty / Certifications
Manufacturer Warranty 
This product is warranted to be free from defects in materials and workmanship for a period of two years from the date of purchase. This warranty does not cover damage which occurs in shipment or failure which results from alteration, tampering, accident, misuse, abuse, neglect, or improper maintenance. 


Rated 3.6 out of 5 by 26 reviewers.
Rated 2.0 out of 5.0 by Jumps all over I manly use it to test ohms and I use it for testing anywhere between 2.0 - 0.5 ohms and it shows me 28.0 ohms?! I have to reset several times and even then, only because I know approx what it should measure am I able to tell what ohms it is. when trying to figure out the internal reading I need to subtract afterwards it just keeps jumping all over the place. I tested it with a known source and found that it is approx 0.2. It works well for voltage readings but for ohms and sub-ohms not so much. April 26, 2014
Rated 5.0 out of 5.0 by **Correction to my previous review*** Previously I submitted my comments about intermittent readings and the unit having a mind of it's own. I wanted to retract and correct my review. I suspect 'Photoray' had the same issue as me for the following reason. Check to make sure that your probes are FULLY INSERTED into the unit. When installing them initially I stopped pushing as soon as I felt back pressure thinking they were all the way in. It's quite deceiving actually. When you get to this stop apply more pressure until you actually feel the connectors 'pop' into place. I feel a bit sheepish for not realizing this after 2 units but again as stated, it's quite deceiving how the probes actually sit in the connectors in the unit. It now works flawlessly, accurately and is another great product by Klein! March 11, 2014
Rated 5.0 out of 5.0 by Does what I needed it to Wanted a DMM to use on our new RV measuring both AC and DC voltages and amperes. I'm able to monitor battery state of charge and power consumption by the various appliances, lights, etc. 12 volt battery management is very important when camping without hookups and this DMM gave us valuable insights into our RV's operation. August 21, 2013
Rated 1.0 out of 5.0 by Replaced twice only to get a second dud. The first one would not zero out for Voltage testing. Replaced with what looked like a newer version of the MM200. The first one had screw on caps that completely covered the B/W leads. The replacement had different caps that the leads were already exposed. The replacement would zero out but the accuracy of Voltage testing was intermittent. Sometimes it would read about .5 volts on a 120 v circuit. I would have to turn the meter off and on a few times to get it to read 120 v correctly. Replaced again and the same thing happened. I gave up on it. Home Depot was great about the return with no problems. I guess its true you get what you pay for. January 1, 2014
Rated 5.0 out of 5.0 by The MM200 is worth it! I 1st would like to to say that the fluctuation in volt mode is normal (as someone states that in there review as being broken). I read another review saying the backlight didn't wont until you press and hold until it comes on (again someones review states that there multimeter is broken because the light). It is a safety feature for working in the dark (so you don't turn the light "off" as you work). Now my out take on the MM200. It's AWESOME! For the money you can not go wrong. Klein has been around for years making awesome tools (for electricians) . Glad that HD carries this great line of tools! (like there wire cutters and wire strips and what not) It works and works it!!! Oh! It comes with nice leads to. December 24, 2012
Rated 4.0 out of 5.0 by Very Good A little too much tool for my use but, it's great to have. September 27, 2011
Rated 4.0 out of 5.0 by good packaging and easy to use I've used electronic test equipment for over 50 years from high dollar to low dollar. This meter has the best "bang for your buck" of any of them. June 14, 2012
Rated 4.0 out of 5.0 by Nice meter, great price Every home should have a multimeter. It comes with directions and supports all the basic electrical functions for troubleshooting. June 17, 2015
  • 2015-11-22 T10:59:12.172-06:00
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