Non-destructive measurement of material humidity with the help of impedance measuring method. The material to be measured is not damaged. Easy handling: Select the material and determine the material humidity in % by placing it on the surface. 4 material characteristics can be selected: soft wood types (e.g. spruce, pines, limetree), hard wood types (e.g. beech, oak, birch), plaster and screed. LED wet/dry-indicator: the 12 coloured LEDâs (green = dry, yellow = moist, red = wet) give immediate information about the humidity or the degree of dryness of the measured material. Wet alarm: in case of wet material a warning tone also sounds in addition to the red LED-display. Hold function: the currently measured value can be held in the display by pressing a button. Auto power-off: when not in use the device automatically switches off after 2 minutes.This text is machine translated.