I found the stated range of error to be ambiguous. It was stated as being within 3% of the reading. But the units of measure of the reading are themselves in percent.So I wrote the following to the manufacturer, asking if I had a reading of, say, 10% did that mean the range of error was 9.97 - 10.03% or 7 - 13%.This was their reply:The accuracy is ±(3% + 3 digits) as stated in the manual. To use your example, if the meter reads 10% then it is really between 7%-13%. The website will be updated accordingly. Thank you for bringing this to our attention and if there is anything else you have questions about, please feel free to contact us.

General Tools Digital Moisture Meter Mmd4E

General Tools Digital Moisture Meter Mmd4E

Q: Can I use this product to rule out a plumbing leak under my concrete bathroom floor. The outer bathroom wall is concrete & paint is bubbling.

It won't show thru the cement unless it is wet. Also is the wall an exterior wall & you could be getting moisture there. With the paint bubbling you do have a water problem from some where inside or out, but you could check with the tool on the inside in the wall real low next to the cement. It worked real well for my particular problem without tearing up the carpet to find my problem. Hope this helps.

Q: I have a wooden floor that is swelling little bit. I know I had a small water leak. Can this tool help me to check if there is moisture underneath?

ABSOLUTELY! This is just what you need, it tells you the exact moisture where the contacts touch the wood. There is a small button on the face right under the word GENERAL that allows you to pick wood or concrete. I use it on our Maple flooring in the summer to see where we are with water content.

Q: Will it measure moisture in drywall?

Yes. It has two features (1) Wood which I use on dry wall, wood, plastered walls, carpeting.. (2) Building material which I use on concrete floors, concrete blocks... I have found it works well on concrete and I can trace moisture in our basement floors which has helped to target where work needs to be done in outside grading. By the way I am a 78 year old woman and have had "fun" using this meter. Money well spent.

4.5/5

Product ID: 159485749

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Details

Brand
General Tools
Battery Description
No batteries
Mounting Type
Tabletop
Voltage
9 Volts
Manufacturer
General Tools

📊LCD Display

📏Pin Type Precision

🔋No Battery Hassle

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Frequently Bought Together

General Tools MMD4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit LCD Display With Audible and Visual High-Medium-Low Moisture Content Alerts, Grays

Klein Tools ET140 Pinless Moisture Meter for Non-Destructive Moisture Detection in Drywall, Wood, and Masonry; Detects up to 3/4-Inch Below Surface

General Tools PIN3 Replacement Pins for MMD4E, RHMG650 and RHMG700DL Silver

Description

🌱 Measure Moisture, Master Your Craft!

COMPACT PORTABLE - Lightweight design (160g) for on-the-go use.
USER FRIENDLY DESIGN - Clear LCD display for easy reading.
PRECISION MEASUREMENT - Get accurate moisture readings with pin-type technology.
ECO FRIENDLY OPERATION - No batteries required—just plug and play!
VERSATILE APPLICATIONS - Perfect for woodworking, gardening, and home inspections.

The General Tools Digital Moisture Meter MMD4E is a pin-type moisture meter designed for precision measurement without the need for batteries. Featuring a clear LCD display, this lightweight device (160g) is perfect for various applications, including woodworking and gardening, making it an essential tool for professionals and DIY enthusiasts alike.

Specifications

Brand	General Tools
Battery Description	No batteries required
Mounting Type	Tabletop
Voltage	9 Volts
Manufacturer	General Tools
UPC	012301860924 716080037835 885312937219 885265551395 885367884865 681035414477 069060294668 031112659039 885898031110 522536779064 971483008299 031113382226
Global Trade Identification Number	00885265551395, 00681035414477
Country of Origin	USA
Item model number	MMD4E
Product Dimensions	14.1 x 24.13 x 3.56 cm; 113 g
ASIN	B00275F5O2

Have a Question? See What Others Asked

accuracy

Can I use this product to rule out a plumbing leak under my concrete bathroom floor. The outer bathroom wall is concrete & paint is bubbling.

I have a wooden floor that is swelling little bit. I know I had a small water leak. Can this tool help me to check if there is moisture underneath?

Will it measure moisture in drywall?

Reviews

4.5

All from verified purchases

P**T

Good product

It's the best from all th meters available in market

14.12.2021

A**R

Carry case

A protective carry case is needed

18.09.2019

I**D

Nice product

Very good equipment

26.10.2019

P**.

Meets expectations

26.12.2019

@**D

Display gone after 1use. Dont buy.

I used it once now its half display is not showing digits. No i find amazon is not taking strict action on its sellers. I loosing faith on amazon & its sellers.

24.06.2021

A**M

DONT BUY - Not a quality product, stopped working in few days, Selling not responding

STOPPED WORKING IN FEW DAYS. COULD NOT GET REPLACEMENT SINCE THE SELLER IS NOT RESPONDING. BEWARE OF THIS SELLER

19.01.2021

A**A

All is OK

All is OK item is good to fulfill our requirements we can purchase more this type of other equipment's in future but rate is high

20.09.2021

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