---
product_id: 7606462
title: "General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive"
brand: "general tools"
price: "€ 92.91"
currency: EUR
in_stock: true
reviews_count: 13
category: "General Tools"
url: https://www.desertcart.de/products/7606462-general-tools-digital-moisture-meter-mmd7np-humidity-sensor-pinless-non
store_origin: DE
region: Germany
---

# 3-color LED bar graph + audible alerts Reads moisture up to 3/4" deep Long-lasting 9V alkaline battery included General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive

**Brand:** general tools
**Price:** € 92.91
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of hidden dampness — protect your space like a pro!

## Quick Answers

- **What is this?** General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive by general tools
- **How much does it cost?** € 92.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/7606462-general-tools-digital-moisture-meter-mmd7np-humidity-sensor-pinless-non)

## 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

- • **Instant Alerts:** 3-color LED and audible alarms ensure you never miss critical moisture levels.
- • **Pinless Precision:** Non-invasive moisture detection protects surfaces from damage and scratches.
- • **Deep Surface Insight:** Measures moisture up to 19mm deep, ideal for wood, drywall, and masonry.
- • **Trusted Pro-Grade Tool:** Top-rated by professionals and DIYers alike for reliable, quick moisture assessment.
- • **Ergonomic & User-Friendly:** Comfort grip and backlit LCD screen make readings effortless anytime, anywhere.

## Overview

The General Tools Digital Moisture Meter MMD7NP offers fast, accurate, and non-invasive moisture detection up to 3/4" deep with a clear 3-color LED bar graph and audible alerts. Powered by a long-lasting 9V alkaline battery, its ergonomic design and backlit LCD screen make it perfect for professionals and homeowners aiming to prevent mold and water damage without damaging surfaces.

## Description

You can count on our General Tools Digital Moisture Meter to give you the most accurate readings for preventing water and moisture build-up. It can quickly determine what level of remediation is needed to keep your family safe. High levels of dampness that go untreated can cause hazardous living conditions. Our humidity meter can detect low, medium, and high moisture tones and colored green, yellow, and red LED visual alerts and has an audible out-of-range alarm so you will be able to hear a high tone alert. This mold reader has a sturdy, ergonomic shape and rubber side grips for comfort even when used for multiple measurements. It also features a hold function to freeze a reading, auto power-off, and a low battery indicator.General Tools has been a recognized leader in the innovation, design, and development of specialized precision tools for many years. We encourage craftspeople, artisans, and DIYers to work smarter, measure better, and increase productivity.

Review: Battery lasted longer than the meter - I'm an insurance adjuster and need a meter to determine where water is and isn't. This does a wonderful job. I gave it 5 stars for it's price and ability limitations. However after not daily use but regular use it stopped working after a year. There's the Lost star. The pad on the back has worn thru, and it just stopped reading. It turns on and I thought it was the battery so I swapped it out with a new one. That didn't solve the problem. I bought another one because it's easy to use and cheap, I just would have liked it to last more than a year. And I put the old battery in the new meter and it still has most of the charge left, so storing the new battery for future use. Sad the battery lasted longer than the meter did... Now to those who would use this instead of a professional assessment, I would use this to conclude you NEED a professional, not to use yourself, because their equipment is WAY better and more accurate, and though your drywall may read dry, the problem is your wood studs inside the wall are most likely still wet and this meter won't tell you that. This is a great reference tool, but that is all it is, a reference tool, not a professional diagnostic tool. I will however still trust it daily to tell me what I need to know for my job. Also, almost all concrete reads wet with this meter, and most thin flooring reads wet or elevated if installed over concrete. Don't like that, but I just use a reference point I know it's not damaged and use that as the baseline and look for elevated areas above that.
Review: Good meter - Works as good as the boat surveyor's meter, who I paid $1000 to survey the boat prior to purchase. Could have saved $950. Handy little tool.

## Features

- WOOD MOISTURE METER: Prevent water and moisture build-up with our humidity reader. It can quickly determine what level of remediation is needed to keep your family safe. High levels of dampness that go untreated can cause hazardous living conditions.
- PROTECT YOUR WORK SURFACE: This tool has no pins, so it won't mar, scratch, or damage walls. It features auto-calibrating, a 2" diagonal backlit LCD screen, a 3-color LED bar graph, a hold button, and an audible alert for fast and accurate detection.
- DEEP READER: It can read the levels up to 3/4" (19mm) deep into the surface with a broad measurement range of 0 to 53% for softwood, 0 to 35% for hardwood, and relative readings for wallboard, drywall, and masonry.
- MOLD DETECTOR: Early prevention is vital when stopping mold formation. Check and test suspicious water stains around the house to determine if the area is wet or has already dried. It includes an out-of-range alarm and a low 9V battery alert.
- GENERAL TOOLS: We have been a recognized leader in the innovation, design, and development of specialized precision tools for many years. We encourage craftspeople, artisans, and DIYers to work smarter, measure better, and increase productivity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00HARYVUQ |
| Batteries | 1 9V batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Battery Description | Alkaline |
| Best Sellers Rank | #731 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Moisture Meters |
| Brand | General Tools |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,004) |
| Date First Available | June 26, 2013 |
| Description Pile | Alkaline |
| Global Trade Identification Number | 00681035015834 |
| Included Components | ..... |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 4 ounces |
| Item model number | MMD7NP |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Manufacturer | General Tools Mfg Co In |
| Material | other |
| Measurement Accuracy | +/-0.1% |
| Mounting Type | Wall Mount |
| Number of Handles | 1 |
| Part Number | MMD7NP |
| Pattern | Detector |
| Power Source | Battery Powered |
| Product Dimensions | 3"W x 1.13"H |
| Size | Pinless |
| Style | Digital LCD with Tricolor Bar Graph, Pinless |
| Temperature Accuracy | ±1°C |
| Temperature Reading Accuracy | plus_minus_1_degree_celsius |
| UPC | 021113026145 681035015834 753248093142 031113198551 080000324931 044905098113 069060295955 971485411967 079531646414 |
| Upper Temperature Rating | 122 Degrees Fahrenheit |
| Voltage | 9 Volts |

## Product Details

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

## Images

![General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive - Image 1](https://m.media-amazon.com/images/I/61cQ9+0e5PL.jpg)
![General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive - Image 2](https://m.media-amazon.com/images/I/81-rgcrDu9L.jpg)
![General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive - Image 3](https://m.media-amazon.com/images/I/71eqx0SZzmL.jpg)
![General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive - Image 4](https://m.media-amazon.com/images/I/71nTxoUKF8L.jpg)
![General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive - Image 5](https://m.media-amazon.com/images/I/71EOshzX3ZL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it sense moisture through a painted surface or just the moisture content of the paint?**
A: It senses moisture through a painted surface.

**Q: Can this be used on concrete and drywall?**
A: Yes, the device has four modes.  Wall, masonry, soft wood, hard wood.  Wall is drywall.

**Q: 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.**
A: 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.

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

## Customer Reviews

### ⭐⭐⭐⭐ Battery lasted longer than the meter
*by A***J on February 5, 2019*

I'm an insurance adjuster and need a meter to determine where water is and isn't. This does a wonderful job. I gave it 5 stars for it's price and ability limitations. However after not daily use but regular use it stopped working after a year. There's the Lost star. The pad on the back has worn thru, and it just stopped reading. It turns on and I thought it was the battery so I swapped it out with a new one. That didn't solve the problem. I bought another one because it's easy to use and cheap, I just would have liked it to last more than a year. And I put the old battery in the new meter and it still has most of the charge left, so storing the new battery for future use. Sad the battery lasted longer than the meter did... Now to those who would use this instead of a professional assessment, I would use this to conclude you NEED a professional, not to use yourself, because their equipment is WAY better and more accurate, and though your drywall may read dry, the problem is your wood studs inside the wall are most likely still wet and this meter won't tell you that. This is a great reference tool, but that is all it is, a reference tool, not a professional diagnostic tool. I will however still trust it daily to tell me what I need to know for my job. Also, almost all concrete reads wet with this meter, and most thin flooring reads wet or elevated if installed over concrete. Don't like that, but I just use a reference point I know it's not damaged and use that as the baseline and look for elevated areas above that.

### ⭐⭐⭐⭐⭐ Good meter
*by S***A on February 23, 2026*

Works as good as the boat surveyor's meter, who I paid $1000 to survey the boat prior to purchase. Could have saved $950. Handy little tool.

### ⭐⭐⭐⭐⭐ Works well
*by R***K on February 21, 2026*

It seems to behave exactly as advertised. No prongs, just lay it against a surface, and gives you a reading.

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-24*