MCM Electronics

40,000 Count 4-1/2 Digit True RMS Benchtop Multimeter DMM By Tenma (72-1020) MCM Part #72-1020

5 stars 11 reviews
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MSRP: $399.00
You Save: $170.00 (43 %)

This multimeter is ideal for the professional at a service bench or lab, or any user that requires high accuracy. This unit measures AC/DC voltage and current, resistance, capacitance, frequency, and temperature. It also provides diode and audible continuity test, as well as 4~20mA loop testing.

The compact design keeps your work space tidy, and even stores accessories inside of the unit underneath a removable panel. It can be powered by either AC power or made portable with DC power (6 x 1.5 C batteries).

Specifications Top

  • AC or battery operation
  • 40,000 count, 4-1/2 digit primary display
  • Dual 4,000 count, 3-1/2 digit sub displays
  • 40 segment analog bar graph
  • USB and RS-232 serial interfaces
  • Data logging of 9,999 readings
  • USB and RS-232 serial interfaces
  • Fused current measurement to 10A
  • AC or AC+DC TRMS measurement
  • Backlit display
  • 10Mohm input impedance
  • Ultra sensitive 4,000Mohm input impedance on 400mV range
  • Switchable auto/manual range
  • Detailed 70 page instruction manual
  • Test leads
  • Alligator clip adapters
  • Temperature probe
  • AC Power Cable
  • RS-232 and USB interface cables
  • Software

Device software can also be downloaded here: 72-1020 Software (.zip, 2Mb)

DC Voltage400mV, 4V, 40V, 400V, 1000±(0.025%+5)
AC Voltage4V, 40V, 400V, 1000V±(0.4% +30)
AC Bandwidth100KHz
DC Current40µA, 4000µA, 40mA, 400mA, 10A±(0.1%+15)
AC Current40µA, 4000µA, 40mA, 400mA, 10A±(0.7%+15)
Resistance400Ω, 4KΩ, 40KΩ, 400KΩ, 4MΩ, 40MΩ±(0.3%+40)
Capacitance40nF, 400nF, 4µF, 40µF, 400µF, 4mF, 40mF±(1%+20)
Frequency40Hz, 400Hz, 4KHz, 40KHz, 400KHz, 4MHz, 40MHz, 400MHz±(0.01%+8)
Input Impedance10MΩ (4GΩ on 400mV range)
Dimensions4" (H) x 9 5/8" (W) x 11 3/4" (D)
Part Numbers
MCM Part #:72-1020
Tenma Part #:72-1020
Package Specifications & Dimensions
Weight:7.75 lbs.
Warranty:365 days
Need to Return?
Length:14 in.
Width:11.75 in.
Height:6.5 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

Product Reviews Top

  • by AceCondor

    on 8/2/2015

    Best Buy In A Bench Meter

    Overall: 5 out of 5

    We purchased this meter about a year ago. We found it to be highly accurate. The ranges and functions are very good. We manufacture and modify high end audio equipment, and find this meter to be excellent for our R&D efforts!

  • by

    on 12/3/2014

    Somewhat dissapointing

    Overall: 3.5 out of 5

    The meter works but readings are slow and seem to include several "successive approximations" before they settle down. AC volts and frequency seem to be inconsistent at lower frequencies - anything less than 100hz. And for a meter that is meant to be used on the bench, or in a rack of equipment, that rear mounted power switch is a most major pain! I have replaced the 72-1020 with a Fluke 287. I expect that the battery life on the Fluke won't be as good as that on the Tenma 72-1020.

  • by joelsampson

    on 3/26/2014


    Overall: 4.5 out of 5

    It's a good meter at any price. I got it on sale from MCM and it was a bargain. It measures about everything and it's nice to have an ac powered meter on the bench. The display is large and easy to read. It seems you can measure most things with just the COM and V jacks, which is not what the manual says.

    My gripe is the power switch is on the back, not the front. It's not good for my setup, so I plugged it into a remote controlled power strip.

    joel / N5LXI in Dallas

  • by FETech

    on 9/6/2013

    Benchtop Multimeter

    Overall: 5 out of 5

    Perfect bench meter for lab. Range is perfect for work and home hobby. Quality is excellent.

  • by alval43209

    on 8/28/2012

    Excellent meter

    Overall: 5 out of 5

    I am an electronic hobbyist, and I have had the meter for a little over a year. I do not do PC uploads, but I do find the meter excellent for giving me readings on my projects. Excellent quality, great functionality, and easy to use. Yes, the power button is on the rear of the machine, but I do not have difficulty reaching over the top and turning it on. The only problem my jaring the power plug (also on the back of the meter) and then trying to figure out why the meter is not powering up. I am very satisfied with the meter.

  • by pursgo

    on 3/9/2012


    Overall: 5 out of 5

    i am a gear/tech head. fixed several amps with it. the cap test is solid. i will not go on tour without it. this unit is badass.

  • by Marc49Lewis

    on 11/19/2011

    Good for the most part.

    Overall: 4.5 out of 5

    Accurate but readings are unstable on low ohms and low volts ranges.

  • by dgille

    on 6/8/2010

    Great meter, no so great software

    Overall: 4 out of 5

    This is a great meter! Extremely accurate and reliable. The display is clear and bright, readable from a distance if needed. I would prefer that the power switch be placed on the front panel and not on the back). I tend to need print outs of meter readings and settings. The software provided does attempt to show what the meter is reading but has no concept of scale. The readings get placed on graphs with no decimal point scaling. The graphs are just very large integer numbers that have to be scaled by hand / mind (not very useful if you intend to send them to a remote engineering team. If you plan to use the meter for it's great accuracy and display it's a must buy, but for PC software use, find another MCM meter/software package.

  • by enduro

    on 1/14/2010

    Tenma 72-1020 Benchtop Meter

    Overall: 5 out of 5

    This meter is easy to use and the USB and logging features including being able to hook to your PC are great. This meter is a great value we got it for $199 on sale and comparable meters of other brands were $500+

  • by marad73

    on 9/23/2008


    Overall: 5 out of 5

    Setup was a no brainer! Meter is VERY accurate, especially on DC Volt ranges. Very easy to use and convenient on my bench. Overall a great deal for the price! Nice quality packaging.

  • by elevapro

    on 7/30/2008

    Good tester

    Overall: 4.5 out of 5

    That bench tester is very good for the price It make the job very good The shipping in canada was very good and fast Martin

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