1High Accuracy: This electronic wall scanner detector has stud scan mode, depth scan mode, metal mode and AC mode provide different scan options and accurate results. 2LED Display And Sound Warning: LED screen indicator would give you clear direction and accurate location of targets, and its sound warning would show you the edge or center of this target on the wall. 3Good Calibration: In stud and deep mode, just calibrate it on the wall; in metal and AC mode, please calibrate it in the air. Accurate warning on metals or wires, avoid you from drilling on metal or wires or other mishaps. 4Wide Uses: This stud finder with quality can be widely used for various objects and wall structures. Our stud finder could help you detect studs, AC wires, metals on a wall, floor, and ceiling quickly. 5User Friendly: This wall scanner is simple to use, just holding both sides of the stud finder when you move it on the wall. Once the target is detected, the large LED screen would display its precise location on the wall. Item Type: Wall Metal Detector Material: ABS Battery: 1 x 9V 6F22 (not included) Purpose: Metal and wood stem center detector, with the function of detecting metal and voltage wires Support Language: English Can detect wood and metal stems, and the wall thickness is within 1.5 inches (38mm /1.50in) Can detect metal pipes with wall thickness within 2.36 inches (60mm / 2.36in) Can detect live wires in the wall, the wall thickness is within 2 inches (51mm / 2.01in) 1 x Wall Metal Detector 1 x Manual