This measuring tool is intended for detection of metals (ferrous and non-ferrous metals e.g. rebar), joists and live wires/conductors in walls, ceilings and floors. A winner wall detector for ferrous metals to 80mm, Non –Ferrous metals (copper) to 60mm, Wires(live)** 50mm, and wood 20mm. Automatically displays the depth of the measured metal. The centre Icon is automatically displayed when the object to be measured is in the centre of the instrument. Features Metal detector, ideal for the research of pipes and electric cables sound and visual indication of the area under examination discrimination of ferrous and non-ferrous metals sensitivity control LCD display low battery indicator. Specifications Value Ferrous metals 80 mm Non-ferrous metals 60 mm Live electric cables 50 mm Wood 20 mm Automatic switch off 5 minutes Operating temperature -10 ° C / + 50 ° C Battery life 6 hours Battery 9V Dimensions 200 x 80 x 20 mm Weight 120 g