The detector allows you to detect wires and metal profiles, as well as wooden structures behind walls or plasterboard panels: Detects live cables within 50 mm Detects magnetic metals at a distance of 120 mm Detects non-magnetic (e.g. copper) metals at a distance of 80 mm Detects wooden elements at a distance of 20 mm (exact), 38 mm (approx.) The moisture detector works at a distance of 8 mm Wood moisture measurement in the 5 - 50 % range (2 % accuracy) Moisture measurement of construction materials in the range of 1.5 - 33 % (2 % accuracy) The detector has an audio signal and three LEDs (green/orange/red) signaling the detection of a substance. Automatic shutdown, turns off after 5 minutes of inactivity The detector use 9V (6F22) battery (not included) The battery lasts up to 6 hours Dimensions: 200 x 77 x 20 mm