Purpose: Quickly locate wood, metal, and AC wires hidden in the walls, floors, and ceilings of a house. It can work in Flat noodles, wallpaper, wood floor, acoustic ceiling, painted wall and other places. Prevent you from encountering danger when installing televisions, cabinets, garage racks, etc.Metal Depth Indicator.Green Backlight.Low Voltage Indicator.Operating Current:Less than 50maFunction:The seven functions are:1. Three pieces of wood with a depth of 0.5 inches2. Three pieces of wood with a depth of 1 inch3. Three pieces of wood with a depth of 1.5 inches4. Metal detection5. AC power6. Depth of metal detection7. Distinguishing whether metals are magnetic or not.Model:710Weight:170GBattery:9V battery (shipped without battery) Battery model: 9V battery 6F22Shutdown Current:Less than 10UAAutomatic Shutdown Time:3 minutes1. Detection Mode SelectionStud Mode:In stud mode, there are 3 scan modes o choose for properly thick of the scanning :1/2Inch Scan Mode can detect 1/2 in. (13mn) deep.1Inch Scan Mode can detect 1 in. (25mm)deep.1 1/2Inch Scan Mode can detect 1 1/2 in.(38mm) deep.If you don't know the depth of the detection, it is recommended to use 1/2Inch scan mode first. When 1/2Inch scan mode is not detected, use 1Inch or 1 1/2 Inch scan mode instead.Metal Mode:The detection of magnetic metal can be as deep as 3.2 in. (80mm)(diameter 15mm galvanized steel tube)It can detect nonmagnetic metals up tc 2.4 in. (60mm) (diameter 13mm copper tube)AC Mode:Detect unshielded AC live wire up to 2 in. (51mm) deep.Colour:As ShownMaterial:PlasticPackage Contents:1 * Stud Finder Wood StudsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.