General Tools Pin-type Digital Moisture Meter with LCD Display-MMD4E - The Home Depot

General Tools

Model # MMD4E

Internet # 100651808

Pin-type Digital Moisture Meter with LCD Display

General Tools Pin-type Digital Moisture Meter with LCD Display

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

Was   $39.99
$31.99 / each

Save $8.00 (20%) through 12/31/2015

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Promotion Details
Price Valid : 12/11/2014 - 12/31/2015
Save up to 25% on Select General Tools and Instruments


Model # MMD4E

Internet # 100651808

Store SO SKU # 781975

Since 1910, General Tools has grown to become the recognized industry leader for specialty hand tools and instruments. The General Tools Pin-type Digital Moisture Meter with LCD Display offers accurate moisture level readings for wood, plaster and drywall. Use the moisture meter during a home inspection, when you pick up lumber or before painting drywall. This meter has a jumbo LCD display with a low battery indicator.

  • Measures water content of wood and building materials with 3% accuracy and 0.1% resolution
  • Helpful in new home inspections and home restoration, locating roof leaks or in selecting dry lumber at the yard
  • Helps ensure appropriate levels of surface dryness before painting, sealing or treating wood or drywall
  • Overall measurement range of 5 to 50% for wood and 1.5 to 33% for building materials
  • Separate low, medium and high scales, icons and tones for wood and building materials
  • Built-in low battery indicator for energy conservation


Assembled Depth (in.)  0.5 in  Assembled Height (in.)  6 in 
Assembled Width (in.)  3 in  Product Depth (in.) 
Product Height (in.)  Product Width (in.)  2.6 
Abrasion-Proof Display Lens  Yes  Audible Alert  Yes 
Automatic Calibration  Yes  Automatic Temperature Compensation  No 
Backlit  No  Batteries Included  No 
Battery Charger Included  No  Battery Power Type  Alkaline 
Battery Size  9-volt  Case Included  No 
Control Type  N/A  Data Log/Record  No 
Data hold  No  Display Type  Digital 
External Electrode  Not Supported  Extra Pins/Probes Included  No 
Interchangeable Pins/Probes  Yes  Low Battery Indicator  Yes 
Maximum moisture reading (%)  50.0  Maximum sense depth (in.)  2.0 
Measureable materials  Wood, Plaster, Construction Supplies  Microcontroller Circuit  No 
Minimum moisture reading (%)  5.0  Number of Batteries Required  1.0 
Product Weight (lb.)  3 lb  Reference Scale Included  No 
Returnable  90-Day  Test Meter Type  Moisture Meter 
Tools Product Type  Test Meter 
Warranty / Certifications
Manufacturer Warranty  1 Year 


Rated 4.1 out of 5 by 17 reviewers.
Rated 4 out of 5 by Digital Moisture Meter Meter works well providing moisture content of structure behind siding (stucco, aluminum, vinyl). November 14, 2013
Rated 5 out of 5 by Every woodburner should have one After kindling and kitchen matches, everyone heating with wood should use the Moisture Meter to segregate firewood with readings of 20% or higher for more drying time. Knowing which logs are under 10% moisture content lets the fire start better and burn hotter - then the 10-15% wood can be added. There is nothing worse than trying to start and get heat out of punk wood. My one product suggestion is to make it with more of the yellow color for improved visibility - and make the pin cover yellow. I take mine into the woods and don't always keep it in my pocket.l October 29, 2014
Rated 4 out of 5 by Simple but functional Last year we felled our mulberry tree. I kept the thicker parts for later use because mulberry wood has a nice yellowish color. To see if the wood was dry enough to use I needed a moisture meter. I checked various models and based on the reviews and price, Out of the box I used it on all sorts of wood, just for testing. I have no way to check the accuracy of the readings but I think the scale is quite right. It went from 8% for my workbench to 45% for wood I brought in from outside. All in all I'm satisfied with the performance. The only negative aspect is the two pinholes from the needles but that I knew already before I bought it. So I use a spot that has to be worked on. May 27, 2014
Rated 3 out of 5 by Overpriced You can find this same product 30 percent lower on am a zon. Perhaps if Home Depot would stock this in the store, it would be worth paying more but you've got to wait for shipping either way. December 14, 2014
Rated 4 out of 5 by Big help with firewood We bought firewood that we couldnt burn efficiently. We had a woodstove repair guy in to look at the stove. He couldnt find anything wrong with it. We then bought this and it helps soooooo much in determining whether the wood is dry enough to burn or not. Our wood wasnt seasoned enough to burn. I just wish it would pick up moisture deeper in the wood (if it did that I would have given it 5 stars). March 25, 2014
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