---
product_id: 7606462
title: "General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive"
brand: "general tools"
price: "394 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "General Tools"
url: https://www.desertcart.pl/products/7606462-general-tools-digital-moisture-meter-mmd7np-humidity-sensor-pinless-non
store_origin: PL
region: Poland
---

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

**Brand:** general tools
**Price:** 394 zł
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of dampness — protect your space with precision moisture mastery!

## 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?** 394 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/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

- • **Deep & Diverse Detection:** Measures moisture up to 19mm deep across wood types, drywall, and masonry for versatile use.
- • **Mold Prevention Made Simple:** Early moisture detection helps you stop mold before it starts, safeguarding your home and health.
- • **Ergonomic & Intuitive Design:** Comfort grip and one-button operation make professional-grade readings effortless for any user.
- • **Pinless Precision, Zero Damage:** Non-invasive moisture detection protects your surfaces from scratches and marks.
- • **Instant Visual & Audible Alerts:** 3-color LED bar graph plus audible alarms keep you instantly informed of moisture risks.

## Overview

The General Tools Digital Moisture Meter MMD7NP offers pinless, non-invasive 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 delivers fast, accurate readings to prevent mold and water damage. Powered by an included 9V battery, this tool is trusted by professionals and DIYers alike for smart, damage-free moisture monitoring.

## 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: Easy to use right out of the box - My laundry room flooded and I'm replacing the flooring. The moisture is in the sub flooring - along with the existing flooring. The floor company told me to buy a moisture reader to monitor the sub floor, because they cant install replacement/new flooring until the reading is less than 5%. When I first got this reader it was over 50% on the sub floor, so I have been using heaters and fans. Now it is down to 25% - but the best thing is... I know nothing about flooring or moisture or how to use moisture readers, but this is super intuitive and easy to use. > Just hit one button to tell it what material it is "wall, hardwood, softwood", etc. then it's super easy - just lay the reader where you want it to read and it does the rest. > Seems very accurate. If i test, then re-test again, readings stay consistent. > Would be easy to locate a leak. You really do just run it over surfaces and it will change in real time. I personally dont have an active leak, but this is accurate and can pin point areas that are more moist than others. > In the video - the sub floor is less moist than the flooring that was soaked and is still installed. You can see how it detects different moisture levels in different areas. Very nice way to monitor as moisture levels go down. > OVERALL - so happy I went with this model, even though I was comparing it with a couple others that were a little cheaper. This one works VERY VERY well.. that's all that is important when your in a situation where you need one of these. If you buy a cheaper one, that may not be as accurate - you will be kicking yourself later when your entire project is up in the air and your going to spend that extra $10 at Starbucks because your stressed out and need coffee :)
Review: Just what we needed, in a hurry because of a leak! - Very effective tool for measuring moisture. Helped us find the area our leak was in. Delivered within hours

## 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 | #7,209 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Moisture Meters |
| Brand | General Tools |
| Customer Reviews | 4.4 4.4 out of 5 stars (3,997) |
| 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:** 0.25 Pounds
- **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)

## 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

### ⭐⭐⭐⭐⭐ Easy to use right out of the box
*by P***H on January 18, 2021*

My laundry room flooded and I'm replacing the flooring. The moisture is in the sub flooring - along with the existing flooring. The floor company told me to buy a moisture reader to monitor the sub floor, because they cant install replacement/new flooring until the reading is less than 5%. When I first got this reader it was over 50% on the sub floor, so I have been using heaters and fans. Now it is down to 25% - but the best thing is... I know nothing about flooring or moisture or how to use moisture readers, but this is super intuitive and easy to use. > Just hit one button to tell it what material it is "wall, hardwood, softwood", etc. then it's super easy - just lay the reader where you want it to read and it does the rest. > Seems very accurate. If i test, then re-test again, readings stay consistent. > Would be easy to locate a leak. You really do just run it over surfaces and it will change in real time. I personally dont have an active leak, but this is accurate and can pin point areas that are more moist than others. > In the video - the sub floor is less moist than the flooring that was soaked and is still installed. You can see how it detects different moisture levels in different areas. Very nice way to monitor as moisture levels go down. > OVERALL - so happy I went with this model, even though I was comparing it with a couple others that were a little cheaper. This one works VERY VERY well.. that's all that is important when your in a situation where you need one of these. If you buy a cheaper one, that may not be as accurate - you will be kicking yourself later when your entire project is up in the air and your going to spend that extra $10 at Starbucks because your stressed out and need coffee :)

### ⭐⭐⭐⭐⭐ Just what we needed, in a hurry because of a leak!
*by G***E on December 13, 2025*

Very effective tool for measuring moisture. Helped us find the area our leak was in. Delivered within hours

### ⭐⭐⭐⭐ Helpful and simple
*by A***R on December 4, 2025*

This may not be the most precise sensor but it is accurate at being able to locate the source of a potential leak or at least tell you if there is an underlying problem. I like that it is non penetrating so it doesn't leave any damage to the walls or ceilings. I've successfully used it to help find water leaks/damage in drywall walls & ceilings (including textured) and also PLAM (laminate) countertops. It helped confirm that a section of counter was actually water damaged and not a fabrication error or other damage, which lead to thankfully finding the source of the leak.

## Frequently Bought Together

- General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive
- Mold Test Kit for Home - 12 Simple Detection Tests,Test HVAC System,Home Surfaces,& Indoor Air Quality Testing Kits,DIY Mold Detector at Home,Includes Detailed Mold Identification Guide,air Tester

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-07*