Specification Name: Wall detector Size: 17*7.5*3.5cm/6.69*2.95*1.37inch Power: a 9V battery (not included) Material: ABS/TPE Note: detection results will be affected by the detection of objects and the size of the object, as well as the detection of outside materials and conditions and other factors; if the cable is not charged, the depth of detection will be reduced Description New upgraded stud detector: more accurate and stable than most stud detectors on the market, this stud detector performs very well and can find studs quickly, accurately and repeatedly. It works efficiently and shows the edge and center of studs, wood, metal and live AC wires 5 five-in-one detection mode: for the detection of wood panels, gypsum board-type material walls within the center of the wooden stalks metal location and charged wires, and with AC warning function, wood detection, 1: 1/2in.(12.7mm), 1l: lin.(25.4mm), Ill: 11/2in.(38mm), wire detection, 2in.(51mm), metal detection 2.36in.(60mm). Easy to use: Our goal is to develop reliable stud detectors that help you avoid detection hazards. With this stud finder, you can quickly find wood, metal and AC wires hidden in the walls or ceilings of your house, helping you avoid potentially serious problems when installing TVs, cabinets and more. Safe and secure: The stud finder is designed to locate wood and metal studs while avoiding AC power lines. This stud finder displays charged AC in all modes, keeping you away from AC and preventing you from drilling into it. The stud finder is highly accurate in detecting a variety of materials, even in thicker walls. Applicable scenarios: wall detectors can detect metal, wooden beams and charged cables hidden in walls, ceilings and floors (referring to walls, ceilings and floors as conventional concrete, tiles, wood panels, etc.) Product List 1 * wall detector