---
product_id: 1096279
title: "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"
brand: "general tools"
price: "HK$544"
currency: HKD
in_stock: true
reviews_count: 8
category: "General Tools"
url: https://www.desertcart.hk/products/1096279-general-tools-mmd4e-digital-moisture-meter-water-leak-detector-moisture
store_origin: HK
region: Hong Kong
---

# Wide 5-50% moisture range Audible & visual moisture alerts Backlit LCD for quick reads 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

**Brand:** general tools
**Price:** HK$544
**Availability:** ✅ In Stock

## Summary

> 💧 Detect moisture like a pro — don’t let hidden dampness catch you off guard!

## Quick Answers

- **What is this?** 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 by general tools
- **How much does it cost?** HK$544 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/1096279-general-tools-mmd4e-digital-moisture-meter-water-leak-detector-moisture)

## Best For

- general tools enthusiasts

## Why This Product

- Trusted general tools brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic & Portable:** Compact, one-hand design with included 9V battery ensures you’re ready to test anywhere, anytime.
- • **Instant Visual Alerts:** Backlit LCD with large digits and color-coded moisture levels keeps you informed at a glance, day or night.
- • **Dual-Use Leak Detector:** Easily identify hidden water leaks and damp spots before they escalate into mold or structural issues.
- • **Trusted by Pros & DIYers:** General Tools’ legacy of precision empowers you to work smarter and protect your home with confidence.
- • **Precision Moisture Detection:** Pin-type sensor delivers accurate readings for wood and building materials, preventing costly water damage.

## Overview

The General Tools MMD4E Digital Moisture Meter is a professional-grade pin-type tester designed to measure moisture content in wood, drywall, concrete, and subflooring. Featuring a backlit LCD with large digits and audible/visual alerts for low, medium, and high moisture levels, it helps contractors and homeowners quickly identify water damage and prevent mold growth. Compact and ergonomic, it includes stainless steel pins, a protective calibration cap, and a 9V battery for immediate use.

## Description

Brand:General Tools Color:Grays Features: Moisture meter features an easy-to-read LCD display for quick and easy viewing; ergonomic size fits in one hand Ideal for contractors and homeowners to measure moisture content in wood, concrete drywall and subflooring; essential water damage tool Moisture detector has a wide and precise measuring range; stick the stainless steel pins into the surface of what you are measuring in order to get a read-out Never buy water logged wood again; woodworking tool measures the moisture content of wood before buying;Auto power off Can be used as a water leak detector after flood damage, or general water damages Publisher:General Tools Warranty:1 Year Details:General Tools MMD4E Moisture Meter, Pin Type, Digital LCD UPC:012301860924 EAN:0522536779064 Package Dimensions:9.0 x 5.4 x 1.2 inches

Review: Approve - Easy to Use - This Pin Type Moisture Meter is great! The size is comfortable and with just two features for testing WOOD or BLDG (Building Materials) this is very easy to use without over complicating it. 9V Battery was included!! The owners manual is available online at the manufacturer's website. Humidity will effect results which can vary depending on where you live. Overall, I approve this tool. Great value!!
Review: Very accurate and helpful for detecting moisture issues - This moisture meter has been extremely helpful and easy to use. I used it to check different areas near the wall and floor, and it provided clear and consistent readings. You can immediately see the moisture level on the screen, which makes it very convenient for quick inspections. The device feels solid and well made. It responds quickly and gives accurate results, which is especially useful for detecting hidden moisture problems before they turn into bigger issues. I like that it has different indicators, so it’s easy to understand whether the moisture level is low, medium, or high. Overall, this is a very practical tool for homeowners. It helped me better understand the condition of my floors and walls, and I’m glad I had it on hand. I would definitely recommend this product to anyone who wants a reliable and easy-to-use moisture detector.

## Features

- HUMIDITY SENSOR: Our handy meter tool can quickly determine what level of remediation is needed to keep your family safe from black mold. High levels of dampness that go untreated are the leading cause of harmful fungus growth in the home.
- WATER LEAK DETECTOR: Finding the moisture content in your wood or drywall is the first step in early prevention. Continuously check and test suspicious water stains around the house so you can determine whether the area is wet or has already dried. Low, medium and high moisture tones and on-screen icons, Reading HOLD button
- MOISTURE READER: The mold test features large 0.3" high digits in a backlit LCD for quick and easy detecting. Our mildew scanner includes extra 8mm stainless steel pins, a protective cap that doubles as a calibration checker, and a “9V” battery.
- MOLD TESTER: For an accurate test read, stick the stainless steel pins into the surface of what you're measuring. The gauge has a broad range of 5 - 50% for wood and 1.5 - 33% for building materials such as concrete and drywall.
- GENERAL TOOLS: We're a recognized leader in designing and developing specialized precision tools dedicated to delivering exceptional customer service. We encourage artisans and DIYers to work smarter, measure better, and repair more productively.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Battery Description | Alkaline |
| Brand | General Tools |
| Color | Gray |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Mounting Type | Surface Mount |
| Product Dimensions | 9.5"W x 1.4"H |

## Product Details

- **Battery Description:** Alkaline
- **Brand:** General Tools
- **Color:** Gray
- **Lower Temperature Rating:** 32 Degrees Fahrenheit
- **Product Dimensions:** 9.5"W x 1.4"H

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61+4TbrH9kL.jpg)

## Available Options

This product comes in different **Pattern** options.

## Questions & Answers

**Q: accuracy**
A: 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.

**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.**
A: 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?**
A: 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?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Approve - Easy to Use
*by G***H on January 6, 2026*

This Pin Type Moisture Meter is great! The size is comfortable and with just two features for testing WOOD or BLDG (Building Materials) this is very easy to use without over complicating it. 9V Battery was included!! The owners manual is available online at the manufacturer's website. Humidity will effect results which can vary depending on where you live. Overall, I approve this tool. Great value!!

### ⭐⭐⭐⭐⭐ Very accurate and helpful for detecting moisture issues
*by U***N on December 31, 2025*

This moisture meter has been extremely helpful and easy to use. I used it to check different areas near the wall and floor, and it provided clear and consistent readings. You can immediately see the moisture level on the screen, which makes it very convenient for quick inspections. The device feels solid and well made. It responds quickly and gives accurate results, which is especially useful for detecting hidden moisture problems before they turn into bigger issues. I like that it has different indicators, so it’s easy to understand whether the moisture level is low, medium, or high. Overall, this is a very practical tool for homeowners. It helped me better understand the condition of my floors and walls, and I’m glad I had it on hand. I would definitely recommend this product to anyone who wants a reliable and easy-to-use moisture detector.

### ⭐⭐⭐⭐ For professionals
*by H***. on December 27, 2025*

It seemed to work ok but when I got my house tested by a professional the results were very different. I was easy to use however, you do have to make holes in the wall. Its battery life seemed good as well as calibration capability. I would only use if I was a professional. Otherwise do not waste your time.

## 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
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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-04*