Ⅰ. This 3-in-1 AC live metal and wire detector will help you find where to find. Decorate your home. It will help you avoid unnecessary losses when you want to dig a hole to hang a picture or install shelves, etc. Accurately locate metal pipes, live cables, wooden studs and frames. 3 detection modes: 1. Stud Scan mode: locates the edge of metal and wooden studs in regular walls up to 38 mm (1.5 inches). 2. Metal Scan mode: detects metal, such as iron, copper and aluminum, up to 76 mm (3 inches). 3. AC Wire Scan Mode: Detects AC wire up to 76mm (3 inches). Ⅱ. Specification: Color: Yellow Working Temperature: -20 -50 Battery: 1*9V Battery (Not Included) Size: Approx. 15.5* 7*3cm / 6.1* 2.8* 1.2inch Weight: Approx. 199g Package List: 1 * Detector * Manual Ⅲ. This 3-in-1 AC wire and metal detector center finder will help you decorate your home. You can avoid unnecessary losses when you want to dig a hole to hang a picture or install shelves, etc. accurately locate metal pipes, live cables, wooden studs and frames. 3 detection modes: Metal Scan Mode: Detects metal such as iron, copper and aluminum up to 76mm (3 inches). AC Wire Scan Mode: Locates AC wire up to 76mm (3 inches).