Add to your order

  • NO ADDITIONAL COST: You pay $0 for repairs – parts, labor and shipping included.
  • COVERAGE: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
  • PRODUCT ELIGIBILITY: Plans cover products purchased in the last 30 days.
  • EASY CLAIMS PROCESS: File a claim anytime online or by phone. Most claims approved within minutes. We will send you an Amazon e-gift card for the purchase price of your covered product. In some cases, we will replace or repair it.
Added to Cart
Learn more

Add to your order


from
Added to Cart
& FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Learn more about free returns.
How to return the item?
FREE delivery Tuesday, October 26
Or fastest delivery Tomorrow, October 21. Order within 5 hrs 29 mins
In Stock.
$$33.98 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$33.98
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Ships from
Amazon.com
Sold by
Amazon.com
Ships from
Amazon.com
Sold by
Amazon.com
Return policy: Returnable until Jan 31, 2022
For the 2021 holiday season, returnable items purchased between October 1 and December 31 can be returned until January 31, 2022
Support: Free Amazon product support included
What's Product Support?
In the event your product doesn’t work as expected, or you’d like someone to walk you through set-up, Amazon offers free product support over the phone on eligible purchases for up to 90 days.
To access this option, go to Your Orders and choose Get product support.
General Tools MMD4E Digit... has been added to your Cart
1-Click ordering is not available for this item.
FREE delivery Friday, October 29
Only 1 left in stock - order soon.
Other Sellers on Amazon
$40.77
& FREE Shipping
Sold by: Mauve supplies
Sold by: Mauve supplies
(4 ratings)
50% positive over last 12 months
In stock.
Usually ships within 4 to 5 days.
Shipping rates and Return policy
$40.77
& FREE Shipping
Sold by: Auletta's Shop
Sold by: Auletta's Shop
(6 ratings)
67% positive over last 12 months
In stock.
Usually ships within 4 to 5 days.
Shipping rates and Return policy
$40.78
& FREE Shipping
Sold by: EGM Deals
Sold by: EGM Deals
(4 ratings)
50% positive over last 12 months
In stock.
Usually ships within 4 to 5 days.
Shipping rates and Return policy

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

4.6 out of 5 stars 9,260 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Moisture Meters by General Tools

List Price: $49.95 Details
Price: $33.98 & FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Learn more about free returns.
How to return the item?
You Save: $15.97 (32%)
Available at a lower price from other sellers that may not offer free Prime shipping.

Enhance your purchase

Protection Plan
From $4.99
This item is only available for new products. Please update your buying option selection to proceed.
    This fits your .
  • Make sure this fits by entering your model number.
  • HUMIDITY SENSOR: Our handy meter tool can quickly determine what level of remediation is needed to keep your family safe from black mold. High levels of dampness that go untreated are the leading cause of harmful fungus growth in the home.
  • WATER LEAK DETECTOR: Finding the moisture content in your wood or drywall is the first step in early prevention. Continuously check and test suspicious water stains around the house so you can determine whether the area is wet or has already dried.
  • 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. We encourage artisans and DIYers to work smarter, measure better, and repair more productively.
See more product details

Alexa Bill Planner
Bill Planner is the easier way to check, compare, and pay your utility bills with Alexa. With intelligent notifications, Alexa helps you keep track by letting you know if you're about to miss a bill due date. Try asking, "Alexa, what's my bill?" to get started. Learn More

Frequently bought together

  • General Tools MMD4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit LCD Display With Audible
  • +
  • co2crea Hard Travel Case Replacement for General Tools MMD4E Moisture Meter Pin Type
  • +
  • Klein Tools ET140 Pinless Moisture Meter for Non-Destructive Moisture Detection in Drywall, Wood, and Masonry; Detects up to
Total price:
To see our price, add these items to your cart.
Some of these items ship sooner than the others.
Choose items to buy together.

Special offers and product promotions

  • Amazon Business: Make the most of your Amazon Business account with exclusive tools and savings. Login now
  • Amazon Business : Discover discounts and FREE shipping on work supplies. Register a free business account

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

Your question might be answered by sellers, manufacturers, or customers who bought this product.

Please make sure that you are posting in the form of a question.

Please enter a question.

What's in the box

  • ....

  • From the manufacturer

    Compare with similar items


    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
    Wood Moisture Meter - Digital Moisture Detector Moisture Tester, Pin-Type Water Leak Detector Damp Tester Dampness Meter for Wood Building Material Firewood Walls Paper Floor (Sliver)
    General Tools MMD7NP Pinless, Non-Invasive, Non-Marring, Digital Moisture Meter, Water Leak Detector, Moisture Testerup To ¾" (19mm) Deep, Backlit LCD Screen, Visual/Audible Alarms
    Wood Moisture Meter, 2 in 1 Pin & Pinless Moisture Meter for Wood, Dr.meter Backlit LCD Display Pin-type & Scanner Wood Multifunctional Moisture Tester for Firewood/Drywall/Building/Furniture-Upgraded
    Mecurate Digital Pin Type Wood Moisture Meter, Moisture Detector 2 Mode 8 Calibration Large Backlit for Wood, Wall, Firewall
    Customer Rating 4.6 out of 5 stars (9260) 4.6 out of 5 stars (1854) 4.5 out of 5 stars (4699) 4.5 out of 5 stars (2697) 4.5 out of 5 stars (875) 4.6 out of 5 stars (71)
    Price $33.98 $39.97 $26.99 $45.48 $26.99 $21.99
    Shipping FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime
    Sold By Amazon.com Amazon.com yingyaodianzi Amazon.com Thousandshores Inc Mecurate Instrument

    Product description

    The General Tools MMD4E Pin-Style Digital Moisture Meter provides accurate moisture level reading to detect leaks, dampness and moisture in wood, walls, ceiling, carpet and firewood. It is an essential tool for assessing water damage and remediation efforts after flooding from storms, hurricanes, roof leaks or broken pipes to discover hidden water damage in floors, walls and under carpets. By checking suspicious water stains with a moisture tester around the house, you can determine whether the area is wet (a perfect breeding ground for mold) or has long since dried. This water leak detector also is helpful for new home inspections and home restorations, locating roof leaks or simply to ensure firewood is ready to burn. It also ensures the appropriate level of surface dryness before painting, sealing or treating wood or drywall. The moisture meter is easy to use: simply stick the stainless steel pins into the surface of what you are measuring in order to get a read-out. Overall measurement range of 5 to 50% for wood and 1.5 to 33% for building materials. The backlit, large, easy-to-read digits and clearly-designed LED alerts tell you immediately if the moisture content is high, medium or low. Plus, the moisture meter has audible high, medium, low alerts so you will be able to hear the level even if you are in a dark or awkward space where you can’t see the screen. The sturdy, ergonomic shape and rubber side grips allow for comfort even when using for multiple measurements. Every moisture meter also feature a hold function to freeze a reading to read later, auto power off and a low battery indicator. Every package includes extra 0.3 in. (8mm) stainless steel pins, a protective cap that doubles as a calibration checker and a “9V” battery.

    SPECIFICATIONS • Measurement ranges: 5 to 50%WME (Wood Moisture Equivalent) for wood, 1.5 to 33% for building materials
    • Moisture measurement accuracy/resolution: ±3%/0.1%
    • Pin length: 0.3 in. (8mm)
    • Wood moisture scales: 5 to 11.9% (low); 12 to 15.9% (medium); 16 to 50% (high)
    • Building materials scales: 1.5 to 16.9% (low); 17 to 19.9% (medium); 20 to 33% (high)
    • Display size and type: 99.9 count backlit LCD with 0.3 in. (8mm) high digits
    • Auto power off: After 3 minutes of inactivity
    • Dimensions: 6.0 x 2.6 x 0.8 in. (152 x 66 x 20 mm) • Weight: 3 oz. (86g)
    • Power source: "9V" battery (included)

    GENERAL TOOLS - THE PRECISE TOOL FOR DOING THE JOB EXACTLY RIGHT. Offering over 1,000 tools, we’re proud to provide tradesmen, craftsmen and DIYers around the world with a broad range of affordable, specific-purpose mechanical hand tools and precision measuring and inspection tools.

    For inquiries, please contact our Customer Service Department at 212-431-6100. We strive to provide our customers with 100% satisfaction.

    WORK SMARTER, MEASURE BETTER & BE MORE PRODUCTIVE WITH GENERAL TOOLS

    Product information

    Technical Details

    Additional Information

    Warranty & Support

    For warranty information about this product, please click here [PDF ]

    Feedback

    Would you like to tell us about a lower price?

    Important information

    Bulb Voltage

    9 volts


    Customer Questions & Answers

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    9,260 global ratings
    How are ratings calculated?

    Top reviews from the United States

    Reviewed in the United States on December 18, 2017
    Verified Purchase
    560 people found this helpful
    Report abuse
    Reviewed in the United States on January 26, 2018
    Verified Purchase
    188 people found this helpful
    Report abuse
    Reviewed in the United States on February 11, 2017
    Verified Purchase
    Customer image
    5.0 out of 5 stars I can see how it would help anyone trying to chase a leak or to see if the moisture had been removed sufficiently to determine t
    By Greg Howard on February 11, 2017
    As an insurance adjuster, I had to rely on vendors to give me moisture readings in water claims. Now, I have been able to use this meter several times already to determine moisture levels in wood and sheetrock and trace down leaks in homeowners claims. I can see how it would help anyone trying to chase a leak or to see if the moisture had been removed sufficiently to determine the damage was not going to get any better, i.e., buckle in floor was not going to go down any further, no matter how much more dry the engineered wood flooring got.

    In the attached photo, I'm using it to show my insurance company client that the water issue in the claimant's kitchen has not been fully remediated because the reading is well above 10%. This is an actual insurance file photo, made possible by the clear display of this product.
    Images in this review
    Customer image
    Customer image
    220 people found this helpful
    Report abuse
    Reviewed in the United States on July 26, 2018
    Verified Purchase
    94 people found this helpful
    Report abuse
    Reviewed in the United States on May 5, 2016
    Verified Purchase
    181 people found this helpful
    Report abuse
    Reviewed in the United States on March 28, 2019
    Verified Purchase
    41 people found this helpful
    Report abuse
    Reviewed in the United States on October 2, 2017
    Verified Purchase
    71 people found this helpful
    Report abuse
    Reviewed in the United States on January 8, 2018
    Verified Purchase
    48 people found this helpful
    Report abuse

    Top reviews from other countries

    Just Another Customer
    4.0 out of 5 stars Easy to use. Need more proof re: accuracy
    Reviewed in Canada on December 23, 2020
    Verified Purchase
    Ghazanfar Naseem Sheikh
    3.0 out of 5 stars Leaves marks on wood
    Reviewed in Canada on September 1, 2020
    Verified Purchase
    2 people found this helpful
    Report abuse
    Chico
    2.0 out of 5 stars Not good If to be used on exterior fiberglass RV unit as it has pins that can not be removed
    Reviewed in Canada on July 17, 2021
    Verified Purchase
    Amazon Customer
    1.0 out of 5 stars Display gone after 1use. Dont buy.
    Reviewed in India on June 23, 2021
    Verified Purchase
    Amazon Customer
    5.0 out of 5 stars Ensure good quality firewood; check moisture in below-grade rooms.
    Reviewed in Canada on July 21, 2021
    Verified Purchase