General Tools Moisture Meter, Pinless, Digital LCD with Tricolor Bar Graph

Item # 309489882 | General Tools Part # MMD7NP | UPC Code 681035015834 | UNSPSC Code 27110000
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Product Overview

Accurately detect water and protect against damaging mold with the General Tools MMD7NP Moisture meter. This non-invasive, non-marring water leak detector has separate settings for drywall, masonry, softwoods, and hardwoods, making it ideal for detecting moisture under finished surfaces. The jumbo backlit 2 in. diagonal LCD screen and tricolor LED bar graph deliver clear and easy-to-read results. This detector is self-calibrating and offers a 3/4 in. (20mm) maximum sensing depth with +/- 4 percent accuracy on wood. It has moisture measurement ranges of 0 to 53 percent for softwood and 0 to 35% for hardwood and produces relative readings for wallboard and masonry. The moisture meter features a hold button, auto-power-off function, out-of-range alarm, and low-battery indication. It is powered by an included 9-Volt battery.

  • Scans large areas of drywall and wood without marking or marring the wall
  • Has separate settings for drywall, masonry, softwood, and hardwood
  • Self-calibrating detector offers a 3/4 in. (20 mm) maximum sensing depth
  • Can sense water leaks on wood within +/- 4% accuracy
  • Hold button, auto-power-off function, out-of-range alarm, and low-battery indicator
  • Operates at temperatures between 32 degree F and 122 degree F (0 to 50 degree C) at less than 80% relative humidity
  • Powered by 1 9-Volt battery (included)

Proposition 65 Information

Prop65 Warning Icon WARNING: WARNING: This product can expose you to chemicals including di2-ethylhexylphthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to



Battery Power Type
Battery Size
Control Type
Digital / Analog
Display Type
Automatic Calibration, Backlit, Handheld, LED Meter, Noncontact Detection
Manufacturer Warranty
1 Year Limited
Product Depth (in.)
Product Height (in.)
Product Weight (lb.)
Product Width (in.)
Test Meter Type
Moisture Meter
Tools Product Type
Test Meter


1 Year Limited