--- product_id: 7606462 title: "General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive" brand: "general tools" price: "€ 99.84" currency: EUR in_stock: true reviews_count: 13 category: "General Tools" url: https://www.desertcart.sk/products/7606462-general-tools-digital-moisture-meter-mmd7np-humidity-sensor-pinless-non store_origin: SK region: Slovakia --- # 3-color LED bar graph for instant alerts Reads moisture up to 3/4" deep Low battery & auto power-off for reliability General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive **Brand:** general tools **Price:** € 99.84 **Availability:** βœ… In Stock ## Summary > πŸ’§ Stay dry, stay safe β€” detect moisture before it’s too late! ## 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?** € 99.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/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 - β€’ **Pinless Precision:** Non-invasive moisture detection protects surfaces from damage - β€’ **Deep Surface Insight:** Measures moisture up to 19mm deep for accurate remediation decisions - β€’ **Ergonomic & Intuitive:** Rubber grips and one-button operation make monitoring effortless - β€’ **Instant Visual Alerts:** 3-color LED bar graph plus audible alarms keep you ahead of mold risks - β€’ **Trusted Pro-Grade Tool:** Top-ranked moisture meter with consistent accuracy for DIYers and pros alike ## Overview The General Tools Digital Moisture Meter MMD7NP offers pinless, non-invasive moisture detection up to 3/4" deep with a broad measurement range. Featuring a backlit LCD, 3-color LED alerts, audible alarms, and ergonomic design, it empowers professionals and DIYers to prevent mold and water damage with fast, reliable readings. ## 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: Meter Works as Expected and Intended. - Tested it on concrete interior wall to check for moisture content after a heavy rain caused the window seams to leak. The meter performed as expected over the suspected moisture accumulation behind the wall coating. There was moisture.back there. I tested it on a dry interior wall and it registered "0%" as expected. I would recommend this meter. ## 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 | | Battery Description | Alkaline | | Best Sellers Rank | #472 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Moisture Meters | | Brand | General Tools | | Brand Name | General Tools | | Customer Reviews | 4.3 out of 5 stars 4,106 Reviews | | Global Trade Identification Number | 00681035015834 | | Included Components | ..... | | Item Dimensions W x H | 3"W x 1.13"H | | Item Type Name | .... | | Item Weight | 4 ounces | | Lower Temperature Rating | 32 Β°F | | LowerTemperature Range | 32 Β°F | | Manufacturer | General Tools Mfg Co In | | Model | MMD7NP | | Mounting Type | Wall Mount | | Number of Items | 1 | | Part Number | MMD7NP | | Product Dimensions | 3"W x 1.13"H | | Temperature Accuracy | Β±1Β°C | | Temperature Reading Accuracy | plus_minus_3_degrees_fahrenheit | | UPC | 021113026145 681035015834 753248093142 031113198551 080000324931 044905098113 069060295955 971485411967 079531646414 | | Unit Count | 1 Count | | Upper Temperature Range | 122 Β°F | | Voltage | 9 volts | ## Product Details - **Battery Description:** Alkaline - **Brand:** General Tools - **Item Weight:** 4 ounces - **Lower Temperature Rating:** 32 Β°F - **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) ## 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 ### ⭐⭐⭐⭐⭐ 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 :) ### ⭐⭐⭐⭐⭐ Meter Works as Expected and Intended. *by A***L on March 26, 2026* Tested it on concrete interior wall to check for moisture content after a heavy rain caused the window seams to leak. The meter performed as expected over the suspected moisture accumulation behind the wall coating. There was moisture.back there. I tested it on a dry interior wall and it registered "0%" as expected. I would recommend this meter. ### ⭐⭐⭐⭐ 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. ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/7606462-general-tools-digital-moisture-meter-mmd7np-humidity-sensor-pinless-non](https://www.desertcart.sk/products/7606462-general-tools-digital-moisture-meter-mmd7np-humidity-sensor-pinless-non) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-23*