---
product_id: 29722681
title: "General Tools LCD Moisture Meter #MM8 - Leak and Humidity Detector - Pinless and Non-Invasive"
brand: "general tools"
price: "₪330"
currency: ILS
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.il/products/29722681-general-tools-lcd-moisture-meter-mm8-leak-and-humidity-detector
store_origin: IL
region: Israel
---

# 3-color LED bar graph 0.01% accuracy 3/4" deep pinless sensing General Tools LCD Moisture Meter #MM8 - Leak and Humidity Detector - Pinless and Non-Invasive

**Brand:** general tools
**Price:** ₪330
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of leaks with precision you can trust!

## Quick Answers

- **What is this?** General Tools LCD Moisture Meter #MM8 - Leak and Humidity Detector - Pinless and Non-Invasive by general tools
- **How much does it cost?** ₪330 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/29722681-general-tools-lcd-moisture-meter-mm8-leak-and-humidity-detector)

## 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 & Readable:** High-contrast 2" backlit LCD digits with ergonomic handle for comfortable, clear readings anytime.
- • **Intuitive Visual Alerts:** 3-color LED bar graph plus audible alarms keep you instantly informed on moisture levels.
- • **Proactive Mold Prevention:** Early leak detection with out-of-range and low battery alerts helps you stop damage before it starts.
- • **Versatile Material Settings:** Tailored modes for drywall, masonry, softwood, and hardwood ensure pinpoint accuracy across projects.
- • **Precision Moisture Detection:** Pinless, non-invasive tech reads moisture up to 3/4" deep without damaging surfaces.

## Overview

The General Tools LCD Moisture Meter MM8 is a professional-grade, pinless moisture detector designed for accurate, non-invasive readings up to 3/4" deep. Featuring a bright backlit LCD, 3-color LED alerts, and ergonomic design, it supports multiple material settings including drywall, masonry, and wood. Ideal for early leak detection and mold prevention, this compact, battery-powered tool empowers DIYers and pros to protect their spaces with confidence.

## Description

You can always rely on our General Tools LCD Moisture Meter MM8 to give you the most accurate readings when measuring the moisture content in your basement, bathroom walls, and roof. Stop water damage and mold formation before it becomes problematic. Our tool features a hi-visibility white on black screen with LCD digits for easy readability from any angle. It also features an ergonomic construction and includes non-invasive sensing technology so that it won't scratch or mar the surface material. This handy device has separate out-of-range alarms for wood and building materials, and our humidity tester has colored green, yellow, and red LED visual alerts. It also features a hold function that freezes the reading so you can view it later.General Tools has been a recognized leader in the innovation, design, and development of specialized home inspector tools for many years. We encourage craftspeople, artisans, and DIYers to work smarter, measure better, and increase productivity.

## Features

- HUMIDITY METER: It's ideal for measuring the moisture content of wood and construction materials. It features separate settings for drywall, masonry, softwood, and hardwood and includes non-marring sensing technology that protects surfaces.
- EASY TO READ: This monitor features 2" (50mm) high backlit white LCD digits, auto-calibrating, a 3-color LED bar graph, and an audible alert accurate detection. The ergonomic handle design conforms to your hand for a comfortable user experience.
- WATER LEAK SENSOR: It has no pins and can read the levels up to 3/4" (19mm) deep into the surface with an overall measurement of 0 to 53% for softwood and 0 to 35% for hardwood. It provides relative readings for wallboard and masonry.
- DEEP DETECTION: Early prevention is vital when stopping mold formation. Check and test suspicious leak stains 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 |
|---------------|-------|
| Color | White |
| Brand | General Tools |
| Product Dimensions | 2.8"W x 6.3"H |
| Item Weight | 0.34 Pounds |
| Battery Description | Alkaline |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Mounting Type | Surface Mount |
| Operating Humidity | 5% to 95% |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
| Voltage | 9 Volts |
| Manufacturer | General Tools |
| UPC | 735090905002 681035017340 |
| Global Trade Identification Number | 00681035017340 |
| Part Number | MM8 |
| Item Weight | 5.4 ounces |
| Item model number | MM8 |
| Batteries | 1 9V batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Style | Pinless/White on Black Screen |
| Material | Plastic |
| Pattern | Detector |
| Power Source | Battery Powered |
| Item Package Quantity | 1 |
| Measurement System | Metric |
| Measurement Accuracy | +/-0.01% |
| Included Components | Console^Battery (1) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Description Pile | Alkaline |

## Product Details

- **Color:** White
- **Brand:** General Tools
- **Product Dimensions:** 2.8"W x 6.3"H
- **Item Weight:** 0.34 Pounds
- **Battery Description:** Alkaline

## Images

![General Tools LCD Moisture Meter #MM8 - Leak and Humidity Detector - Pinless and Non-Invasive - Image 1](https://m.media-amazon.com/images/I/71YeWu4f4XL.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

### ⭐⭐⭐⭐⭐ Failed after 3 months. Fixed by recalibration (in the manual), thanks to customer support
*by S***K on June 21, 2025*

The unit worked just fine and was quite useful from mid-March to mid-June. Then, suddenly something happened, and the sensitivity suddenly dropped on all ranges. it still feels the hand, but on the wall, masonry, softwood and hardwood shows only 0, where an hour ago I saw 15 to 55% of moisture. Replaced the battery with fresh one - nothing changes. Opened the case and did not see any broken wire. Actually, pretty nice design and well manufactured (I can tell that being a professional in engineering), but is completely useless now.UPDATE: contacted warranty department and they responded with the advice - recalibrate the unit. Pretty simple operation, and they attached the manual, so took about a minute to do. The unit works fine again, and I love the customer support!

### ⭐⭐⭐⭐⭐ Seems to work great.
*by M***. on August 29, 2025*

Not sure how it works but it seems to work very well. Easy to use.

### ⭐⭐⭐⭐ Works as expected with reasonable moisture percentage determinations
*by V***R on January 18, 2017*

For the price, I did not think that this would be an ultra precise instrument, but for my use in determining if there is added moisture in new wood flooring over concrete and painted paneling over masonry, this device gave me an order of magnitude that I could determine where moisture might be accumulating in a room partially below grade. I like the fact that it does not have pins that must sink into the material's surface. The readings can vary by + or - 3% over the same spot over a few minutes, which is not precise. But since this device is determining the moisture in the material from a surface reading, it probably is as precise as I can expect and worked in the application I had.

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-01-26*