Stud Sensor i 65 One Step tool finds the centre & edges of wood & metal studs & joists up to 38 mm deep in walls floors & ceilings Since finding studs is essential for anchoring anything securely to a wall its ability to find deeper targets makes the Stud Sensor i 65 stud finder perfect for both professional builders & home improvement enthusiasts Wire Warning Alert indicates the presence of unshielded hot electrical wiring An easytoread LCD screen indicates direction centre & edges of studs A signal strength indicator helps determine the targets depth Center Vision technology locates the centre of wood & metal studs with just one pass Spot Lite Pointing System & audio alert identify stud centres instantly ACT Auto Correcting Technology checks calibration 10 times per second & recalibrates automatically to ensure accuracy