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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

MMD7NP

Product ID: 7606462

Details

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

📊3-color LED bar graph for instant moisture level

📏Reads moisture up to 3/4" deep

🔋Low battery alert for uninterrupted use

NT$3392

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Taiwan.

Secure transaction

Description

💧 Detect moisture before it becomes a problem — stay ahead, stay dry!

SMART ALERTS - Audible alarms and LED indicators keep you instantly informed
PINLESS PRECISION - Non-invasive moisture detection protects surfaces from damage
TRUSTED INNOVATION - From General Tools, a leader in precision tools for pros and DIYers
ERGONOMIC DURABLE - Rubber grips and backlit LCD ensure comfort and clarity during extended use
DEEP SURFACE INSIGHT - Measures moisture up to 19mm deep for accurate remediation decisions

The General Tools Digital Moisture Meter MMD7NP offers pinless, non-invasive moisture detection with readings up to 3/4" deep. Featuring a backlit LCD, 3-color LED bar graph, audible alerts, and ergonomic design, it empowers professionals and homeowners to prevent mold and water damage efficiently. Trusted by thousands, it’s the #1 moisture meter for precise, damage-free moisture monitoring.

Specifications

ASIN	B00HARYVUQ
Battery Description	Alkaline
Best Sellers Rank	#464 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Moisture Meters
Brand Name	General Tools
Customer Reviews	4.3 4.3 out of 5 stars (4,118)
Global Trade Identification Number	00681035015834
Included Components	.....
Item Dimensions W x H	3"W x 1.13"H
Item Type Name	....
Item Weight	4 ounces
LowerTemperature Range	32 °F
Manufacturer	General Tools Mfg Co In
Model	MMD7NP
Mounting Type	Wall Mount
Number of Items	1
Part Number	MMD7NP
Temperature Accuracy	±1°C
Temperature Reading Accuracy	plus_minus_3_degrees_fahrenheit
UPC	021113026145 681035015834 753248093142 031113198551 080000324931 044905098113 069060295955 971485411967 079531646414
Unit Count	1 Count
Upper Temperature Range	122 °F
Voltage	9 volts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

NT$3392

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Taiwan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews