Ze&Li LCD Battery Operated Stud Finder, 3 Modes An essential tool to locate the perfect spot for mounting picture frames, mirrors, shelves, cable wires, ceiling fans, or wall brackets The easy to read LCD display allows you to quickly obtain readings from the stud finder Easily detect metal rebars and AC live wires up to 3 inches and wood and metal studs up to 1.5 inches 3 scan modes allows stud finder to adjust readings based on thickness of surface: 0.5 inch, 1 inch, or 1.5 inches Compact design allows for convenient storage and portability. Measures 2.7 x 1.18 x 6.1 inches