Wide Application: This stud finder can be used to detect the position of the center of the wood stud in the walls of wood boards and plasterboards, as well as the position of metal and AC cables, so that you can accurately install TVs, cabinets, drill holes in the wall, etc. 4-in-1 Detection Mode: This stud finder has 4 different modes that can be switched: stud scanning, deep mode, metal scanning and AC scanning. Multifunctional: Stud scanning is used to find and locate the center and edge of wood and metal studs with a depth of 19mm; The maximum positioning depth of deep scan is 38mm; The maximum metal detection depth reaches 60mm; AC Scanning can detect AC wires with a depth of 51mm. Screen display and alarm prompt: During the detection process, the display screen will indicate the detection mode, signal strength, direction indication, etc. In addition, the intensity of the buzzer will vary depending on the distance between you and the target, you can mark the position with a