THE STUDSENSOR™ E50 STUD FINDER LOCATES THE EDGES OF WOOD AND METAL STUDS AND JOISTS BEHIND WALLS FLOORS AND CEILINGS. ITS EASY-TO-READ DISPLAY SCREEN INDICATES STUD EDGES THE PATENTED SPOTLITE® POINTER SHINES A BEAM OF LIGHT ON THE WALL TO IDENTIFY THE TARGET AND WIREWARNING®DETECTION INDICATES THE PRESENCE OF LIVE AC VOLTAGE. PATENTED PIVOT PINCH GRIP DESIGN AND CONTOURED SHAPE PROVIDE AN EASY SECURE HOLD IN EITHER HAND AT ANY ANGLE. FEATURES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" LOCATES THE EDGES OF WOOD OR METAL STUDS UP TO 3/4 IN. (19 MM) DEEP DEEPSCAN® MODE DOUBLES THE SCANNING DEPTH TO 1 1/2 IN. (38 MM) EASY-TO-READ LCD DISPLAY INDICATES WHEN A STUD EDGE IS APPROACHED PATENTED SPOTLITE® POINTER SHINES AN ARROW-SHAPED LIGHT ON THE WALL TO MARK THE TARGET WIREWARNING® DETECTION INDICATES THE PRESENCE OF LIVE UNSHIELDED ELECTRICAL WIRING UP TO 2 IN. (51 MM) DEEP ZIRCON'S PATENTED ""OVER-THE-STUD"" INDICATION ALERTS USER TO START THE SCAN IN A NEW LOCATION IF SCANNING BEGINS OVER A STUD PATENTED TRUCAL® TECHNOLOGY INDICATES WHEN THE TOOL IS CALIBRATED AND READY FOR USE