Feature 1High Accuracy: This electronic wall scanning detector has stud scanning mode, deep scanning mode, metal mode, and AC mode, providing different scanning options and accurate results. 2LED Display and Warning: The LED screen indicator will give you clear direction and accurate target position, and its sound warning will tell you the edge or center of the target on the wall. 3Good Calibration: In stud and deep mode, calibration only needs to be done on the wall. In metal and AC mode, please perform calibration in the air. Provide accurate warnings to metal or wires to prevent drilling or other accidents from occurring on them. 4Wide Application: This stud detector can be widely used for various objects and wall structures. Our stud scanner can help you quickly detect studs, AC wires, and metals on walls, floors, and ceilings. 5User Friendly: This wall scanner is easy to use, as you only need to hold both sides of the stud detector when moving on the wall. Once a target is detected, the large LED screen will display its precise position on the wall.Item Type: Stud Finder Material: ABSBattery: 1*9V 6F22, shipped without battery. Supported Language: EnglishFive Scanning Modes:1/2in Stud Scanning Mode: Locate the center and edges of wood and metal studs, with a depth of up to 1/2in, that is, 12mm. 1in Stud Scanning Mode: Locate the center and edges of wood and metal studs at a depth of 1in, that is, 25mm. 1.5in Stud Scanning Mode: Locate the center and edges of wood and metal studs, with a depth of 1.5in, that is, 38mm. Metal Scanning Mode: Detects metal at a depth of 2.36in, that is, 60mm. AC Scanning Mode: Detects live conductors of unshielded AC current up to 2in deep, that is, 51mm. Package List:1 x Stud Finder1*User Manual