Does it sense moisture through a painted surface or just the moisture content of the paint?

It senses moisture through a painted surface.

Can this be used on concrete and drywall?

Yes, the device has four modes. Wall, masonry, soft wood, hard wood. Wall is drywall.

Can this be used to locate a leak behind drywall. The drywall is not showing wetness so the water is probably running down a stud or outside wall.

This tool will measure the moisture content of any building material including wood and drywall. If the test indicates a high moisture content in just one spot, you could probably conclude that there was a leak at that point.

Will this unit work on a plywood sub floor, and hardwood flooring to verify the hardwood has properly aclimated for installation?

In order to get accurate readings you will need to make sure the two prongs on the top make contact with the area you wish to measure for moisture. The two prongs are pretty small and the tips are sharp. I was able to obtain readings on wet drywall, plywood and ceramic floor tile. As long as contact was made with the points it worked for me and the price is reasonable.

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Pinless Moisture Meter

Product ID: 7606462

Details

Battery Description
Alkaline
Brand
General Tools
Item Weight
4 ounces
Lower Temperature Rating
32 Degrees
Product Dimensions
3"W x 1.13"H

📊3-color LED bar graph for instant status

📏Reads moisture up to 3/4" deep

🔕Pinless, non-invasive surface scanning

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€ 96.60

Duties & taxes included

In stock

Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Battery Description
Alkaline
Brand
General Tools
Item Weight
4 ounces

Description

💧 Stay ahead of moisture — protect your space like a pro!

ERGONOMIC INTUITIVE USE - Rubber grips, backlit LCD, and one-button operation make moisture monitoring effortless for pros and DIYers alike.
MOLD PREVENTION MADE EASY - Early detection with out-of-range alarms helps you stop mold before it threatens your home or workspace.
SAFE SCRATCH FREE MONITORING - Pinless design ensures your walls and floors stay pristine while you detect hidden dampness.
INSTANT VISUAL AUDIBLE ALERTS - 3-color LED indicators plus an audible alarm keep you instantly informed of moisture risks.
PRECISION DEEP MOISTURE DETECTION - Accurately measures moisture levels up to 19mm deep without damaging surfaces.

The General Tools Digital Moisture Meter MMD7NP offers non-invasive, pinless moisture detection up to 3/4" deep with a broad measurement range tailored for wood, drywall, and masonry. Featuring a backlit LCD, 3-color LED bar graph, audible alerts, and ergonomic design, it empowers professionals and DIYers to quickly identify moisture issues and prevent mold growth without damaging surfaces.

Specifications

ASIN	B00HARYVUQ
Battery Description	Alkaline
Best Sellers Rank	#705 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Moisture Meters
Brand	General Tools
Brand Name	General Tools
Customer Reviews	4.4 out of 5 stars 4,045 Reviews
Global Trade Identification Number	00681035015834
Included Components	.....
Item Dimensions W x H	3"W x 1.13"H
Item Type Name	....
Item Weight	0.25 Pounds
Lower Temperature Rating	32 Degrees Fahrenheit
LowerTemperature Range	32 Degrees Fahrenheit
Manufacturer	General Tools Mfg Co In
Model	MMD7NP
Mounting Type	Wall Mount
Part Number	MMD7NP
Product Dimensions	3"W x 1.13"H
Smart Home Compatibility	Not Smart Home Compatible
Temperature Accuracy	±1°C
Temperature Reading Accuracy	plus_minus_1_degree_celsius
UPC	021113026145 681035015834 753248093142 031113198551 080000324931 044905098113 069060295955 971485411967 079531646414
Unit Count	1.0 Count
Upper Temperature Range	122 Degrees Fahrenheit
Voltage	9 Volts

Reviews

N**O

25.03.2026

A**R

12.04.2026

A**R

4.12.2025

A**L

26.03.2026

T**S

17.01.2026

P**H

18.01.2021

B**N

16.11.2014

N**N

29.08.2022

K**D

17.05.2022

S**R

13.04.2025

S**Y

13.11.2017

G**2

25.04.2025

A**2

26.08.2022

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