MAKA Digital Metal Detector Wall Scanner Wood Pipe Copper Wire Stud Finder Drill Postion Multi-mode detection - For wood studs, metal objects (studs and steel/copper pipes) and live wiring ZOOM function for extremely accurate detection. 5-Segment display of the voltage for more safty. Easy and accurate detection of wooden sub-structures. Illuminated ring indicates detection status and an audible detection signal with an on/off button