---
product_id: 1401475
title: "Moisture Meter MMD950 - Humidity Sensor - Pin Type / Pinless Device - Spherical Sensor"
brand: "general tools"
price: "109.51 OMR"
currency: OMR
in_stock: true
reviews_count: 12
category: "General Tools"
url: https://www.desertcart.com.om/products/1401475-moisture-meter-mmd950-humidity-sensor-pin-type-pinless-device-spherical
store_origin: OM
region: Oman
---

# 40-dot tri-color LED bar graph display Dual measurement modes (pin & pinless) 9V battery powered with auto power-off Moisture Meter MMD950 - Humidity Sensor - Pin Type / Pinless Device - Spherical Sensor

**Brand:** general tools
**Price:** 109.51 OMR
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Moisture Meter MMD950 - Humidity Sensor - Pin Type / Pinless Device - Spherical Sensor by general tools
- **How much does it cost?** 109.51 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/1401475-moisture-meter-mmd950-humidity-sensor-pin-type-pinless-device-spherical)

## 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 Sensing Technology:** Spherical sensor detects moisture up to 4 inches behind surfaces for early leak detection.
- • **User-Friendly Interface:** Jumbo LCD plus tri-color LED bar graph and audible alerts keep you informed at a glance.
- • **Complete Professional Kit:** Includes remote probe, replacement pins, calibration cover, and hard carrying case for on-the-go use.
- • **Ergonomic & Durable Design:** Rubber grips and rugged build ensure comfort and reliability on every job site.
- • **Precision Moisture Detection:** Pin and pinless modes deliver versatile, accurate readings on wood, drywall, and concrete.

## Overview

The General Tools Moisture Meter MMD950 is a professional-grade, dual-mode moisture detector featuring pin and pinless measurement capabilities. Equipped with a spherical sensor that senses moisture up to 4 inches deep, a jumbo LCD, tri-color LED bar graph, and audible alerts, it offers precise readings for wood, drywall, and concrete. Powered by a 9V battery with auto power-off, it includes a remote probe, replacement pins, and a durable carrying case—ideal for contractors, woodworkers, and homeowners aiming to prevent mold and water damage with confidence.

## Description

Product Description You can count on our General Tools Moisture Meter MMD950 to give you the most accurate readings for detecting water build-up. Our tester is used for wood, drywall, concrete and has 2 measurement modes. It can detect low, medium, and high damp tones and features green, yellow, and red LED visual alerts. The audible out-of-range alarm so you will be able to hear a high mildew alert. This scanner has a sturdy, ergonomic shape and rubber side grips for comfort even when used for multiple angles. The protective cover doubles as a calibration checker, providing a spare pin compartment. Our monitor features a hold function to freeze a reading and has auto power-off with an adjustable trigger. It includes a custom hard plastic carrying case, and replacement pins are available. It's a great gift for contractors, woodworkers, and homeowners.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. From the Manufacturer Ideal for contractors, woodworkers, and homeowners, this new precision specialty instrument is commonly used to detect moisture and water damage under tiling, locate moisture in sub-floors beneath carpeting and wood flooring, and check moisture in masonry. Two different modes enable users to measure moisture in corner, hard to reach areas, narrow spaces and uneven surfaces. The spherical sensor measures the average moisture level up to a depth of 4-inches and its small contact area provides superb repeatability.

Review: Why I chose this meter over the FLIR MR59 -- A MUST HAVE FOR HOME INSPECTORS! - I apologize to readers in advance for the lengthy post but I feel like providing the background on which I formed my opinion will be more helpful to you than just my opinion alone. I have used the MMD950 before, many times, while doing home inspections with another inspector. It was his device and I always found myself needing to grab it out of his bag in order to verify the findings of my own moisture meter. I finally decided it was time to get my own BUT then I saw that Flir manufactures a similar model for roughly the same price (the MR59 Ball Probe Moisture Meter $199.00). I ordered the Flir thinking it HAD to be superior... I mean it's made by Flir right?!?! Wrong... and I could not have been more disappointed. Both meters have a great quality and durable feel but in the field, the Flir MR59 produced inconsistent and unreliable results that I just couldn't make sense of. Here's the difference: The General Tools MMD950 takes two types of readings with the ball probe sensor, WME% (wood moisture equivalent) and REL% (Relative Moisture, which is based on the calibrated baseline established when the device is turned on). The ability to take these two types of measurements on the same surface (as well as the pin probes if you're really not sure) allows me to make a thorough and confident assessment for my clients during their inspection. I always knew this was a good meter but it wasn't until I put it side by side with the Flir, that I realized how good it actually is. The Flir comes with some cool features but like I said, I found the readings to be arbitrary and unreliable, for example: Putting the ball probe up to a plaster wall that I was 100% certain was dry, might produce a reading of 37, ok fine. Not 37% moisture, just 37. Now my understanding is that this is what Flir calls a "relative" reading. First of all relative to what? And when I put the probe up to a plaster wall that I am 100% certain has moisture behind it, I might get a reading 63. Ok great, now I know one wall is more wet than the other (which I already knew before I spent $200) but how am I supposed to come to any sort of diagnostic conclusion based on the information the device provides?? If 37 represents a material that is dry, then how wet is a reading of 63??? Other dry surfaces may produce a reading of 0, which is fine considering some building materials naturally have lower/higher moisture content than others. But since Flir doesn't provide any sort of info or chart to indicate high/low readings from one material to the next, the thing really just leaves you guessing. Anyway... I'm obviously frustrated/ disappointed with Flir but felt I should air all that out to really highlight why one should choose the General Tools MMD950. Thank you for your patience if you've made it this far lol. All that to say, I love the MMD950 and would recommend it over any other multi-material moisture meter in this price range. Don't be sketched out by the ball probe if you've never seen/ used one before, it works beautifully and you can opt (like I did) to purchase the more traditional, pin probe extension which plugs into the ball probe unit. Hope this was helpful!
Review: Great tool at a great price - I bought this to evaluate our fiberglass boat for leaks and water damage around the mast and chain plates. But our boat is under 12 inches of snow right now. So I tried it out in our bathroom where I have a known water problem. I used the ball to map the extent of a place where we get occasional leaking from ice daming. Yes, the water damage is still there, no surprise. I also was able to detect about twice as much moisture under the floor tiles directly in front of the shower when compared to the doorway to the bathroom. I have not used the pins yet. If you use the pins you will be able to get an absolute percentage value of water. If you use the ball you can only compare one area to another. It seems like a great tool for the price. It comes in a nice case, and is preloaded with a 9 volt battery. There are two extra sets of pins with slightly different shapes. The pins have a cover to keep them from getting lost or damaged. Since I originally posted this, the snow melted and I was able to check the boat. The meter seems to be working. When I drilled out the holes for the genoa track bolts, the wetness and deterioration of the core corresponded well with where the meter said it would be. At least in the relative wetness mode the meter seems to be very reliable.

## Features

- LEAK DETECTOR: Check for moisture on or below the surface of carpets, ceilings, and sub-floors. Our device has an auto power-off after 3, 5, or 10 minutes. It can help contractors, woodworkers, and homeowners on wood, drywall, and concrete projects.
- TWO MEASUREMENT MODES: Features dual displays, including a jumbo LCD and a 40-dot tri-color LED bar graph. It offers 2 modes, pin (%WME) and pinless (REL), and it has a 9V battery, remote pin-type probe, manual/auto-calibration, and a hold function.
- DEEP SENSING: For an accurate read with pin mode, use the attached pins or the 46" cable with pins and insert it into the surface material. The pinless sensor on the back can detect water leaks up to 4" behind walls and ceramic tile.
- REMOTE PROBE: Early prevention is vital when stopping mold formation. Check and test suspicious water stains at the construction site or home to determine whether your building materials are wet or have already dried.
- 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 | B00563TO26 |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Battery Description | Alkaline |
| Best Sellers Rank | #107,839 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #41 in Moisture Meters |
| Brand | General Tools |
| Customer Reviews | 4.2 4.2 out of 5 stars (294) |
| Date First Available | June 28, 2011 |
| Description Pile | Alkaline |
| Global Trade Identification Number | 00681035015056 |
| Included Components | Moisture meter, external probe, replacement pins, Battery Custom, carrying case |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 2 pounds |
| Item model number | MMD950 |
| Manufacturer | General Tools |
| Measurement System | Imperial |
| Mounting Type | Surface Mount |
| Part Number | MMD950 |
| Pattern | Sensor |
| Power Source | Battery Powered |
| Product Dimensions | 4"W x 12"H |
| Size | Pin Type or Pinless |
| Style | Sensor and Remote Probe |
| Temperature Accuracy | 0.5 |
| Temperature Reading Accuracy | plus_minus_0_point_5_degrees_celsius |
| UPC | 080050279700 681035015056 |
| Upper Temperature Rating | 122 Degrees Fahrenheit |
| Usage | Professional |
| Voltage | 9 Volts |
| Warranty Description | 1 year parts |

## Product Details

- **Battery Description:** Alkaline
- **Brand:** General Tools
- **Item Weight:** 2 Pounds
- **Mounting Type:** Surface Mount
- **Product Dimensions:** 4"W x 12"H

## Images

![Moisture Meter MMD950 - Humidity Sensor - Pin Type / Pinless Device - Spherical Sensor - Image 1](https://m.media-amazon.com/images/I/71G-RZ8wd4L.jpg)

## Available Options

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

## Questions & Answers

**Q: I am trying to find an affordable meter to use on boats.  does this mmd950 moisture meter read through laminates to read core wetness levels?**
A: Yes! it is by far the best one on the market, it's ACCURATE !!! I am a fiberglass and gelcoat repair expert, this is the very one I own.... the back flat part reads 3/4 inches deep, but the probe goes in four inches deep! the only "real one out there" technology has changed a lot in thirty years, I've been in the business of gelcoat colormatching as well as the glass work, guess what? it even comes with needle probes to run down wall leaks in sheetrock. This is awesome and the best, by far... better then the over a thousand dollar ones! Get it you'll love this thing and be armed with the best unit money can buy too! Good Luck  they call me "Dr. Gelcoat" New Smyrna beach Fla...

**Q: I recently had moisture on the floor on one end of my basement. Could this be used to detect if there is also moisture present behind the drywall, within the wall? (The drywall is plastered, painted, and seems to be backed with a layer of plastic.) Thank you!**
A: Well! I decided to keep my MMD950 after some calibration problems. It needs to wander and end up stable at 0 to 2% if the calibration is successful. The instrument is reliable when used in a comparison mode. On sheetrock if no water is present it'll read 7 to 9 in the REL mode. If there's water it will jump to at least 17 and maybe even 99%. On roof leaks, I feel it will pick them up, dry days showing a low reading and rainy days jumping significantly. If I were you, I'd take REL reading at various points on the wall around the basement and see if they show dry in some places. Then, over above water pool, check and see if you get a higher reading. The book says the meter shows four inches deep. I have no experience to confirm that. Don't be afraid to open up the sheetrock to look behind it. You gotta know what's going on.

**Q: will this work on bamboo flooring and concrete sub floors?**
A: Should work on the bamboo flooring but not so good on concrete. Concrete always retains moisture so you will always will get a moisture reading no matter what

**Q: Would this unit read to 0.1% up to 10% or more moisture?  Wish to use it on a food product**
A: Your use of the number 0.1% would indicate you're looking for a high level of accuracy. I figure the meter is good for two or three percent plus or minus. I use mine to detect roof leaks. Six to 10 is no leak and 18 or above is a leak. Of course, as stated in the meter description, it'll measure zero to 99%. May be I don't fully understand your question!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Why I chose this meter over the FLIR MR59 -- A MUST HAVE FOR HOME INSPECTORS!
*by R***. on August 21, 2020*

I apologize to readers in advance for the lengthy post but I feel like providing the background on which I formed my opinion will be more helpful to you than just my opinion alone. I have used the MMD950 before, many times, while doing home inspections with another inspector. It was his device and I always found myself needing to grab it out of his bag in order to verify the findings of my own moisture meter. I finally decided it was time to get my own BUT then I saw that Flir manufactures a similar model for roughly the same price (the MR59 Ball Probe Moisture Meter $199.00). I ordered the Flir thinking it HAD to be superior... I mean it's made by Flir right?!?! Wrong... and I could not have been more disappointed. Both meters have a great quality and durable feel but in the field, the Flir MR59 produced inconsistent and unreliable results that I just couldn't make sense of. Here's the difference: The General Tools MMD950 takes two types of readings with the ball probe sensor, WME% (wood moisture equivalent) and REL% (Relative Moisture, which is based on the calibrated baseline established when the device is turned on). The ability to take these two types of measurements on the same surface (as well as the pin probes if you're really not sure) allows me to make a thorough and confident assessment for my clients during their inspection. I always knew this was a good meter but it wasn't until I put it side by side with the Flir, that I realized how good it actually is. The Flir comes with some cool features but like I said, I found the readings to be arbitrary and unreliable, for example: Putting the ball probe up to a plaster wall that I was 100% certain was dry, might produce a reading of 37, ok fine. Not 37% moisture, just 37. Now my understanding is that this is what Flir calls a "relative" reading. First of all relative to what? And when I put the probe up to a plaster wall that I am 100% certain has moisture behind it, I might get a reading 63. Ok great, now I know one wall is more wet than the other (which I already knew before I spent $200) but how am I supposed to come to any sort of diagnostic conclusion based on the information the device provides?? If 37 represents a material that is dry, then how wet is a reading of 63??? Other dry surfaces may produce a reading of 0, which is fine considering some building materials naturally have lower/higher moisture content than others. But since Flir doesn't provide any sort of info or chart to indicate high/low readings from one material to the next, the thing really just leaves you guessing. Anyway... I'm obviously frustrated/ disappointed with Flir but felt I should air all that out to really highlight why one should choose the General Tools MMD950. Thank you for your patience if you've made it this far lol. All that to say, I love the MMD950 and would recommend it over any other multi-material moisture meter in this price range. Don't be sketched out by the ball probe if you've never seen/ used one before, it works beautifully and you can opt (like I did) to purchase the more traditional, pin probe extension which plugs into the ball probe unit. Hope this was helpful!

### ⭐⭐⭐⭐⭐ Great tool at a great price
*by R***X on November 30, 2019*

I bought this to evaluate our fiberglass boat for leaks and water damage around the mast and chain plates. But our boat is under 12 inches of snow right now. So I tried it out in our bathroom where I have a known water problem. I used the ball to map the extent of a place where we get occasional leaking from ice daming. Yes, the water damage is still there, no surprise. I also was able to detect about twice as much moisture under the floor tiles directly in front of the shower when compared to the doorway to the bathroom. I have not used the pins yet. If you use the pins you will be able to get an absolute percentage value of water. If you use the ball you can only compare one area to another. It seems like a great tool for the price. It comes in a nice case, and is preloaded with a 9 volt battery. There are two extra sets of pins with slightly different shapes. The pins have a cover to keep them from getting lost or damaged. Since I originally posted this, the snow melted and I was able to check the boat. The meter seems to be working. When I drilled out the holes for the genoa track bolts, the wetness and deterioration of the core corresponded well with where the meter said it would be. At least in the relative wetness mode the meter seems to be very reliable.

### ⭐⭐⭐⭐ Easy to use
*by P***R on January 30, 2026*

Great

## Frequently Bought Together

- General Tools Moisture Meter MMD950 - Humidity Sensor - Pin Type / Pinless Device - Spherical Sensor
- AcuRite Humidity Meter Hygrometer and Indoor Digital Thermometer with Temperature Gauge and Humidity Gauge, Room Thermometer Comfort Scale, 3 x 2.5 Inches, White (01083M)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-02*