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.

MMD7NP Moisture Meter, Pinless, Digital LCD with Tricolor Bar Graph

MMD7NP Moisture Meter, Pinless, Digital LCD with Tricolor Bar Graph

产品编号: 148753909

安全交易

细节

Brand
General Tools
Item Weight
0.25 Pounds
Battery Description
9V battery
Voltage
9 Volts
Manufacturer
General Tools

📊Tricolor LED bar graph indicator

📏3/4 inch deep moisture detection

🔊Audible high-pitch leak alerts

描述

💧 Detect moisture like a pro—no damage, just precision!

READY TO GO - Includes 9V battery, auto power-off, low battery warning—professional reliability out of the box.
PINLESS PRECISION - Protect your surfaces—no pinholes or scratches while detecting moisture.
DEEP ACCURATE READS - Measures moisture up to 3/4 inch deep in wood, drywall, and masonry with up to 53% range.
USER FRIENDLY DISPLAY - Backlit 2-inch LCD with auto-calibration and hold function for effortless readings.
VISUAL AUDIBLE ALERTS - Instantly spot moisture hotspots with tricolor LEDs and high-pitch sound alerts.

The General Tools MMD7NP is a pinless digital moisture meter designed for professionals who demand accurate, non-invasive moisture detection up to 3/4 inch deep. Featuring a backlit LCD, tricolor LED bar graph, and audible alerts, it protects surfaces from damage while providing quick, reliable readings across wood, drywall, and masonry. Compact and battery-powered, it’s the essential tool for managing moisture in any project.

规格

Brand	General Tools
Item Weight	0.25 Pounds
Battery Description	9V battery
Voltage	9 Volts
Manufacturer	General Tools
UPC	021113026145 681035015834 753248093142 031113198551 080000324931 044905098113 069060295955 971485411967 079531646414
Global Trade Identification Number	00681035015834
Country of Origin	USA
Item model number	MMD7NP
Product Dimensions	2.87 x 7.62 x 16.51 cm; 113.4 g
ASIN	B00HARYVUQ

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