3 in 1 Portable Metal Detector Find Metal and Wooden Posts AC Voltage Live Wire Detect Wall Scanner Electrical Box Finder Detector ToolsBullet Points:1, Position Detection: Used to detect wood and gypsum board at the wall position, metal position and live wire position.2, Middle position detection: It can quickly detect the middle position of the wooden screw.3, Automatic calibration function: all detections have automatic correction function.4, AC alarm function: all detections have AC.5 warning function, low voltage rate: wooden screw is equipped with edge display and low voltage indicator. Descriptions: 3 in 1 Stud Center Finder Metal and AC live wire detector is a good helper when decorating your home. It can avoid unnecessary loss when you want to dig a hole to hang a picture or install shelves and so on, accurately locating hidden metal pipes, live wires, studs and wooden frames. It has 3 detector modes:Stud scanning mode: locates the edges of the stud metal and wood in normal walls up to about 1.5 inch (38mm). Metal Scan Mode: locates Metal such as iron, copper, and aluminum tube up to about 3 inches (76mm); AC Cord Scan Mode: locates AC cord up to approximately 3 inches (76mm). This actor comes along with an audio and visual indication that allows for easy marking when metal, AC live wire and stud is detected. And the LCD screen is easy to read for backlight. Specifications:3 detector modes: Stud scan mode; Metal scan mode and AC cord scan mode. Detects metal up to about 76mm/2.99 inches deepDetects voltage up to about 76mm/2.99 inches deepDetects wood and metal stud up to about 38mm/1.50 inchesOperating temperature/humidity: -20 to 50 degreesPower supply: 1*9V battery (not included). Packing List:Detector*1Manual*1Payment Methods: middot; You can make the payment using any of the above methods, and pls settle within 3 days of placing the order.middot; Your payment will be verified by Aliexpress within 24h and we will process your order once it is completed. If your order is closed for security reasons, you will need to file a complaint with Aliexpress.middot; A refund due to order cancellation, money contract or mediation will be processed immediately and usually takes around 7-10 business days to reach your account.