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Internet # 337061695

Model # MM17

Store SKU # 1014493370

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Pin Moisture Meter with Backlit Display for Wood, Drywall, and Building Materials

$44.97
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  • Pin-style meter for precise moisture readings
  • Measures material moisture plus room temperature and humidity
  • Replacement pins stored inside the handle
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Product Details

About This Product

The General Tools Pin Moisture Meter helps you accurately measure moisture content in wood, drywall, and other building materials. Designed for inspections, remodeling, and repair jobs, this tool uses integrated contact pins for precise moisture detection inside the material. It also displays temperature and humidity readings, giving you a broader view of ambient conditions. The bright backlit display ensures visibility in dimly lit areas like attics, basements, or crawlspaces. Replacement pins are included and conveniently stored in the handle, so you're always ready for the next job.

Highlights

  • Ideal for woodworking, drywall, flooring, and general home inspections
  • Contact pins provide direct moisture readings for more accurate results
  • LCD display shows moisture, temperature, and humidity levels clearly
  • Backlit data display is easy to read in low-light conditions
  • Replacement pins are included and stored in the handle for quick access
  • Durable and easy to operate for both DIYers and professionals
  • Click here for more information on Electronic Recycling Programs
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 337061695

Model # MM17

Store SKU # 1014493370

Specifications

Details

Features

Auto Shutoff, Low Battery Indicator

Included

Batteries

Material Compatibility

Drywall, Wood

Power Source

Battery Operated

Probe Type

Pin

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

1-Year

Questions & Answers

Work on a redwood fence?
ByOct 30, 2026
1 Answer | 
Answer This Question

Yes, this moisture meter can be used on a redwood fence. Select WOOD mode and carefully insert both pins into the wood. For the best assessment, test several locations and avoid measuring immediately after rain, as surface moisture may raise the readings. Please note that the pins will leave two small holes.

By|Nov 2, 2026


    Will this work with firewood?
    BySep 15, 2026
    1 Answer | 
    Answer This Question

    Hello! Thank you for reaching out. Our moisture meters are perfect for fire food.

    By|Sep 17, 2026


      How often do you have to change out the pins ??????
      ByJul 29, 2026
      1 Answer | 
      Answer This Question

      Hello, thank you for your question. You do not need to change the pins frequently. They only need to be changed if they are bent which happens from pressing the pins into the wall.

      By|Aug 5, 2026


        How deep does it read in hardwood
        ByJul 10, 2026
        1 Answer | 
        Answer This Question

        Hello, thank you for your question. Pinless mode: The penetration depth of the electric field varies depending on the material being measured. The MM19 (which shares the same sensor design and sensing depth as the MM9) provides an effective sensing depth of up to 3/8 in. in drywall, 1/4 in. in cement board, and 3/4 in. in wood. Pin mode: The probe pin length is 8 mm (0.31 in.).

        By|Oct 18, 2026


          In 2 previous questions, the customers ask about moisture in concrete and you answer with info about carpet. What does carpet have to do with the question? I have the same question… does this measure moisture content within a concrete slab?
          ByJul 8, 2026
          1 Answer | 
          Answer This Question

          Hello, thank you for your question. Our moisture meter does not work on concrete. This is because the way the reading is taken is through a small electrical current, the concrete is unable to conduct that current, making the readings untrustworthy.

          By|Oct 30, 2026

            (1)

            Does it check concrete floors?
            ByMay 17, 2026
            1 Answer | 
            Answer This Question

            Hello, thank you for your question. These meters are designed for building materials like wood, or drywall. So while they will work on other materials like concrete, the distinction of dry vs wet won't be. The only way to do this is by comparative readings. Take readings in areas of the carpeting that you're sure aren't wet so you know what a dry reading should be, and then you can compare readings to the area you're concerned with.

            By|May 18, 2026


              Does this work on basement cinderblock?
              ByMay 14, 2026
              1 Answer | 
              Answer This Question

              Hello, thank you for your question. These meters are designed for building materials like wood, or drywall. So while they will work on other materials like cinderblock, the distinction of dry vs wet won't be. The only way to do this is by comparative readings. Take readings in areas of the carpeting that you're sure aren't wet so you know what a dry reading should be, and then you can compare readings to the area you're concerned with.

              By|May 18, 2026


                What is the accuracy rating for this device?
                ByDec 26, 2025
                1 Answer | 
                Answer This Question

                The accuracy of the moisture sensor is ±1.5%. The accuracy of the temperature sensor is ±1.8°. The accuracy of the relative humidity sensor is ±3%.

                By|Oct 30, 2026

                  (2)

                  Viewing 1-8 of 9

                  Customer Reviews

                  4.6 out of 5

                  • 4.6 out of 103 reviews
                  • 100% recommend this product
                  Filter by:
                  Showing 1-10 of 103 reviews
                  Must have tool for DIYer
                  [This review was collected as part of a promotion.] The General Tools Pin Moisture Meter is a handy and reliable tool for checking moisture levels in wood, drywall, and other building materials. I purchased it to monitor moisture before starting a repair project, and it provided quick, easy-to-read measurements right out of the box. The display is clear, and the pin probes are sharp enough to penetrate wood without much effort. I appreciate its compact size, which makes it easy to carry around and use in tight spaces. It helped me identify hidden moisture issues that would have been difficult to detect visually, potentially saving me from more costly repairs later. Overall, this moisture meter offers excellent value for homeowners, DIYers, and anyone working on renovation or maintenance projects. It's simple to use, accurate, and gives peace of mind when evaluating moisture-related concerns.
                  by
                    This device is a life saver. Very accurate and after using a dehumidifier for 24 hours, it accurately reflected the drying conditions. Will save for future emergencies!
                    by
                    Homeowner must have !
                    [This review was collected as part of a promotion.] The perfect size to put in a garage workbench in a spot where you will grab it all the time. Recently have repaired leaks around my door frame and used this meter after a rainstorm to ensure that my repairs were working. Screen is easy to read and you are able to change it for each type of material. The probes are easily covered by a snap pop top. Batteries last a good while and there isn’t any maintenance required as long as you keep the probes clean. Awesome product!
                    by
                      Wonderful.
                      [This review was collected as part of a promotion.] This is such a wonderful gift for a woodworker in your family. This allows me to be able to measure the moisture in a piece of wood before I start my craft. My father also found used for it when he suspected a leak and it showed him where the leak possibly be. It is very portable. If it’s in my tool bag fairly easy it’s easy to use it. It’s also very comfortable to hold after having to measure for multiple pieces of wood.
                      by
                        Accurate, high quality
                        [This review was collected as part of a promotion.] This product worked phenomenally! And the forethought to include extra pins was genius. Not only did this read our houses moisture level, the wood moisture level, but my husband was able to test wood and drywall for it during work. It really is an all encompassing tool. It felt very sturdy and was quick at telling you the data. It was easy to switch between the settings, but to find the spare pins you will need a screwdriver. We didn’t need to calibrate ours at all and felt it was very accurate to the other tool in our house. It allowed us to feel confident to burn wood in the fireplace knowing the water level in it.
                        by
                          Great for basement work
                          [This review was collected as part of a promotion.] The was a handy little tool when framing a bedroom and hanging drywall in my basement. I was concerned about moisture from the adjacent poured foundation, but this moisture meter eased my worries. Super easy to use and compact for simple storage.
                          by
                            DIY starter tool
                            [This review was collected as part of a promotion.] This product is a simple and reliable moisture meter. The pin design gives accurate readings on wood and building materials. Easy to use, quick results, and great value for basic home and DIY projects. I appreciate that the item came with batteries for the item and a clear instruction manual! I’ve never heard of this brand but I feel like it performs well and is offered at a good price.
                            by
                              Great
                              [This review was collected as part of a promotion.] Worked as described. Easy to read and understand. Simple, basic pin moisture meter that is not too clunky or heavy and is easy to use and get working
                              by
                                Accurate, Easy, and Surprisingly Essential
                                This 2‑in‑1 moisture meter delivers fast, reliable readings with a clear display and a lightweight, portable build. It powers on quickly and works across different surfaces, making it useful for spotting moisture issues around the home. There’s a small learning curve at first, but once you understand the controls, it performs impressively—especially for the price.
                                by
                                • Recommended
                                Peace of mind
                                [This review was collected as part of a promotion.] When we moved into the first house that my husband and I bought together, we discovered mold, only a few days into owning the house, and so this tool makes me feel so secure. Knowing exactly how much moisture is in any particular place? Gives me so much peace of mind.
                                by
                                  Showing 1-10 of 103 reviews

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                                  Product Snapshot

                                  Suitable for both professionals and home users seeking precise moisture detection in wood and drywall.
                                  Ideal for detecting moisture up to 3/4 in. deep in various materials like drywall, masonry, and wood. Easy viewing with bright reverse-contrast display.
                                  Suitable for both professionals and DIYers seeking accurate pin and pinless moisture detection.
                                  Ideal for professionals and DIYers seeking accurate moisture readings in wood and building materials with pin and pinless modes.

                                  Pinless measurement capability

                                  Multiple material settings

                                  Backlit display

                                  Accuracy

                                  Precise moisture detection
                                  Precise pin-based readings

                                  Data logging