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

DETECT MOISTURE- Determine the moisture content of wood and other building materials (like drywall) or check water damaged areas to see if moisture is still present FIRST STEP IN MOLD PREVENTION - 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 ACCURACY- 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 as well as low, medium and high moisture tones and colored green, yellow and red LED visual alerts EASY TO READ AND USE- Large 0.3 in. (8mm) high digits in a backlit LCD display for quick and easy viewing plus a hold function to freeze a reading, auto power off and a low battery indicator INCLUDES- Extra 0.3 in. (8mm) stainless steel pins, protective cap that doubles as a calibration checker and a "9V" battery