Amprobe MT-10 Moisture Meter Meter measures the moisture content of materials such paper, lumber, sheetrock, concrete, and plaster, and in indoor air quality applications that detect moisture in walls, floors, and ceilings Measures wood and paper moisture from 8 to 60 percent, building material moisture from 0.3 to 2.0 percent, and temperatures from 32 to 99 degrees F (0 to 40 degrees C) Accuracy for testing wood or paper is + or - 2 percent, accuracy for building materials is + or - 0.1 percent, and accuracy for temperature is + or - 2 degrees F (1 degree C) Three LED lights provide quick moisture indication, a backlight supports operation in low-light areas, low-battery indicator, and auto-power off Requires 9V battery (installed), and complies with European Directives and relevant Australian standards