UPGRADED VERSION - 5 IN 1 DEEP DETECTION:This stud finder includes 5 different scanning modes, which is provides users with more detection needs. It suitable for metal tubes, fire lines, studs, wooden frames, steel bars and brackets, as well as ceilings, deep embedded objects behind walls. It features 5 mode: 1/2 inch(13 cm), 1 inch (25 mm) and 1.5 inch (38 mm), Metal scan (60 mm)and AC scan (51 mm). HIGH EFFICIENCY: The wall scanner detector has a graphical LCD display, which indicates many clues in detection, such as detection mode, signal intensity, automatic calibration, battery indicator, and has maximum readability. When the battery power is low, the low battery indicator icon shows you to replace the new 9V battery in time. EASY; FAST TO USE:The stud wall scanner can quickly locate the metal nails, tubes, steel bars, and the beams on the walls, floors, and ceilings, as well as the edges and centers of the electrified AC wires. Select the probe type ,then just press and hold the side button and scan horizontally across the object surface. Auto power off without any operation after 60 seconds . ACCURATE CALIBRATION:The wall scanner will be automatically calibrated when it opens. Calibration is done by positioning the device on a wall without nails, alternating wires or metal. When you have detected an object with the wall scanner, it will beep continually. The big sound warning together with the LCD screen helps detect the accurate location of the objects. MEET ALL YOU NEED:Package includes : 1x stud finder, 1 x User Manual. The stud finder is light weight and has ergonomically designed one-key-operate handle.