Model # DMM45

Internet #204379862

General Tools Auto Ranging Digital Multi-Meter with Backlight

General Tools

Auto Ranging Digital Multi-Meter with Backlight

  • Measures AC/DC voltage, DC current, resistance
  • Includes "K" type bead thermocouple probe and plug adaptor
  • High-impact thermoplastic case
$3197 /each
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Frequently Bought Together

Product Overview

Since 1910, General Tools has grown to become the recognized industry leader for specialty hand tools and instruments. General's digital multimeters are the perfect choice for testing, locating and diagnosing potential electrical problems. This digital multimeter with bright screen display features 10 functions, 37 ranges in manual or Auto ranging modes, high impact thermoplastic case, simple operation, safety recessed test lead connections, overload protection on all ranges, audible continuity, data hold, Auto power off and backlit LCD display.

California residents: see   Proposition 65 information

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Tools Product Type
Hand Tool

Warranty / Certifications

Manufacturer Warranty
1 Year

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Customer Questions & Answers

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Customer Reviews

Auto Ranging Digital Multi-Meter with Backlight is rated 3.7 out of 5 by 6.
Rated 1 out of 5 by from This meter is a piece of junk. The product appeared to have the functions I wanted, but when I received the first one, many functions didn't work. Returned the unit and reordered an another. Second one had similar problems, returned it to the local HD store for a refund and to check with the store employees to see if I wasn't operating it properly. They couldn't make it work, so gave a discount on a Klein meter with similar functions. Very pleased with the new meter and the HD employees help and service.
Date published: 2014-01-28
Rated 4 out of 5 by from Great little unit This immediately became my primary VOM (I have two or three around here but none autoranging). And I can only come up with a couple of minor quibbles. One is that the back light has no "lock" that I can find. It only stays on a set amount of time. There does not appear to be any way to make it remain on until turned off. This can be really annoying when you have your hands full and the light goes off. I'm not sure why the "shift" button is necessary to turn on the continuity beep and I'm always forgetting. The stand is okay but could use maybe more than just one position. And the point of having a temperature measuring function is... I'm not sure what it is. It's not very accurate and I have better ways of measuring temperature. Overall, however, I'm quite pleased with the unit and it has become my main VOM, my old one serving now as a "back up" just in case.
Date published: 2014-07-29
Rated 4 out of 5 by from Feature-filled multimeter This multimeter appears to be well-made and offers a good array of testing features. I am impressed with the temperature probe, something I have not seen before in a multimeter. The design is fairly compact, the screen is easy to see and the audio tone is clear. I think the unit would benefit from clips on the sides for holding the red and black testing probes when they are not in use. Overall, this is a nice tool.
Date published: 2013-10-30
Rated 4 out of 5 by from Works as expected This is a middle of the range multimeter that has enough of the basic features to meet your needs. It can measure successfully up to 500V AC/DV with an accuracy of +/- 0.8%(AC) to +/- 0.5%(DC). The auto-ranging feature is excellent for determining the resistance if you don't know what the range to look in, this multimeter determines it for you and returns the reading accurately.
Date published: 2014-01-27
Rated 5 out of 5 by from simple Having not used one of these on a day to day basis, the owners manual that came with it made it very easy to use, tells you what each setting does and how to use it. I used it to make sure the power was turned off while i was replacing some smoke detectors. (breaker wasn't labeled) The light up display was a plus.
Date published: 2013-10-25
Rated 4 out of 5 by from Product works fine and as expected for my needs. Product was fine except that the instructions were incomplete. One button was not defined at all and I still have not figured out what it supposed to do. A surprise was the temperature sensor which I did not need but may come in handy.
Date published: 2013-12-17
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