Patented technology locates the centre and edges of wood or metal studs behind non metallic walls, floors, or ceilings CenterVision™ Technology finds the stud centre in one pass Backlit LCD screen with easy-to-understand on-screen graphics and audio signal indicate target Dual-sensitivity scanning—Normal mode up to 19mm ( 3//4 in.) or DeepScan® up to 38mm (1 1//2 in.) Finds copper pipes and other non ferrous metal up to 38mm (1 1//2 in.) deep Finds rebar (ferrous metal) in concrete up to 76mm (3 inches) deep Turn off wood and metal-scan to trace unshielded energised electrical conductors, even in plastic conduit Patented SpotLite® Pointing System shines a bright beam of light over target centre Continuous AC detection of unshielded energised electrical conductors between 90 to 250V to a typical depth of 50mm (2 inches) for safety