--- product_id: 253296938 title: "General Tools Mmd4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit Lcd Display With Audible And Visual High-Medium-Low Moisture Content Alerts, Grays" brand: "general tools" price: "¥16646" currency: JPY in_stock: true category: "General Tools" url: https://www.desertcart.jp/products/253296938-general-tools-mmd4e-digital-moisture-meter-water-leak-detector-moisture store_origin: JP region: Japan --- # Wide moisture range 1.5%-50% Audible & visual moisture alerts Backlit LCD with 0.3" digits General Tools Mmd4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit Lcd Display With Audible And Visual High-Medium-Low Moisture Content Alerts, Grays **Brand:** general tools **Price:** ¥16646 **Availability:** ✅ In Stock ## Summary > 💧 Detect leaks before they become disasters — stay dry, stay ahead! ## Quick Answers - **What is this?** General Tools Mmd4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit Lcd Display With Audible And Visual High-Medium-Low Moisture Content Alerts, Grays by general tools - **How much does it cost?** ¥16646 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/253296938-general-tools-mmd4e-digital-moisture-meter-water-leak-detector-moisture) ## 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 - • **Trusted Industry Leader:** From General Tools, a top-rated brand with 14,000+ 4.5-star reviews, ensuring quality and customer satisfaction. - • **Compact & Lightweight Design:** At just 159g and slim dimensions, it’s the perfect tool for on-the-go professionals and home inspectors alike. - • **Precision Moisture Detection:** Pin-type sensor delivers accurate readings across wood, drywall, and concrete for early leak and mold prevention. - • **Pro-Grade Durability & Extras:** Includes extra stainless steel pins and a protective calibration cap, ensuring long-lasting, reliable performance. - • **Instant Visual & Audible Alerts:** Backlit LCD and high-medium-low alerts keep you informed in any lighting condition—never miss a critical moisture level. ## Overview The General Tools MMD4E Digital Moisture Meter is a professional-grade pin-type moisture tester designed for quick, accurate detection of moisture levels in wood, drywall, and concrete. Featuring a backlit LCD with large digits and audible/visual alerts, it helps prevent mold and water damage. Lightweight and durable, it includes extra stainless steel pins and a calibration cap, powered by a 9V alkaline battery. Trusted by thousands, it’s a must-have for home inspectors and DIY pros aiming to safeguard their spaces. ## Description General Tools Mmd4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit Lcd Display With Audible And Visual High-Medium-Low Moisture Content Alerts, Grays : desertcart.ae: Tools & Home Improvement ## Features - Humidity sensor: our handy meter tool can quickly determine what level of remediation is needed to keep your family safe from black mold - Water leak detector: finding the moisture content in your wood or drywall is the first step in early prevention - Moisture reader: the mold test features large 0.3" high digits in a backlit lcd for quick and easy detecting. Our mildew scanner includes extra 8mm stainless steel pins, a protective cap that doubles as a calibration checker, and a “9v” battery - Mold tester: for an accurate test read, stick the stainless steel pins into the surface of what you're measuring. The gauge has a broad range of 5 - 50% for wood and 1.5 - 33% for building materials such as concrete and drywall - General tools: we're a recognized leader in designing and developing specialized precision tools dedicated to delivering exceptional customer service ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00275F5O2 | | ASIN | B00275F5O2 | | Batteries | 1 Product Specific batteries required. (included) | | Battery Description | Alkaline | | Best Sellers Rank | #3,309 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Moisture Meters | | Brand Name | General Tools | | Color | Gray | | Customer Reviews | 4.5 4.5 out of 5 stars (14,776) | | Customer reviews | 4.5 4.5 out of 5 stars (14,776) | | Date First Available | 11 August 2012 | | Department | Unisex Adult | | Global Trade Identification Number | 00681035414477, 00885265551395 | | Included Components | Moisture meter, batteries, extra pins | | Is Discontinued By Manufacturer | No | | Item Dimensions W x H | 24.1W x 3.6H centimeters | | Item Type Name | Moisture Meter | | Item model number | MMD4E | | LowerTemperature Range | 32 Degrees Fahrenheit | | Manufacturer | General Tools | | Manufacturer | General Tools | | Model | MMD4E | | Mounting Type | Tabletop | | Number of Items | 1 | | Operating Humidity | Varied | | Part Number | MMD4E | | Product Dimensions | 14.1 x 24.13 x 3.56 cm; 159 g | | Temperature Accuracy | 3 | | Temperature Reading Accuracy | plus_minus_2_degrees_celsius | | UPC | 012301860924 716080037835 885312937219 885265551395 885367884865 681035414477 069060294668 031112659039 885898031110 522536779064 971483008299 031113382226 | | Unit Count | 1 Count | | Upper Temperature Range | 60 Degrees Celsius | | Voltage | 9 Volts | ## Product Details - **Battery description:** Alkaline - **Brand:** General Tools - **Colour:** Gray - **Lower temperature rating:** 32 Degrees Fahrenheit - **Product dimensions:** 24.1W x 3.6H centimeters ## Images ![General Tools Mmd4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit Lcd Display With Audible And Visual High-Medium-Low Moisture Content Alerts, Grays - Image 1](https://m.media-amazon.com/images/I/61+4TbrH9kL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: accuracy** A: I found the stated range of error to be ambiguous. It was stated as being within 3% of the reading. But the units of measure of the reading are themselves in percent.So I wrote the following to the manufacturer, asking if I had a reading of, say, 10% did that mean the range of error was 9.97 - 10.03% or 7 - 13%.This was their reply:The accuracy is ±(3% + 3 digits) as stated in the manual. To use your example, if the meter reads 10% then it is really between 7%-13%. The website will be updated accordingly. Thank you for bringing this to our attention and if there is anything else you have questions about, please feel free to contact us. **Q: Can I use this product to rule out a plumbing leak under my concrete bathroom floor. The outer bathroom wall is concrete & paint is bubbling.** A: It won't show thru the cement unless it is wet. Also is the wall an exterior wall & you could be getting moisture there. With the paint bubbling you do have a water problem from some where inside or out, but you could check with the tool on the inside in the wall real low next to the cement. It worked real well for my particular problem without tearing up the carpet to find my problem. Hope this helps. **Q: I have a wooden floor that is swelling little bit. I know I had a small water leak. Can this tool help me to check if there is moisture underneath?** A: ABSOLUTELY! This is just what you need, it tells you the exact moisture where the contacts touch the wood. There is a small button on the face right under the word GENERAL that allows you to pick wood or concrete. I use it on our Maple flooring in the summer to see where we are with water content. **Q: Will it measure moisture in drywall?** A: Yes. It has two features (1) Wood which I use on dry wall, wood, plastered walls, carpeting.. (2) Building material which I use on concrete floors, concrete blocks... I have found it works well on concrete and I can trace moisture in our basement floors which has helped to target where work needs to be done in outside grading. By the way I am a 78 year old woman and have had "fun" using this meter. Money well spent. ## Frequently Bought Together - General Tools MMD4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit LCD Display With Audible and Visual High-Medium-Low Moisture Content Alerts, Grays - Klein Tools ET140 Pinless Moisture Meter for Non-Destructive Moisture Detection in Drywall, Wood, and Masonry; Detects up to 3/4-Inch Below Surface - General Tools PIN3 Replacement Pins for MMD4E, RHMG650 and RHMG700DL Silver --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/253296938-general-tools-mmd4e-digital-moisture-meter-water-leak-detector-moisture](https://www.desertcart.jp/products/253296938-general-tools-mmd4e-digital-moisture-meter-water-leak-detector-moisture) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-06*