TS78B 3in1 AC Wire Metal Scanner Digital LCD Wood Stud Finder Metal wire detector Industrial scanner Pile detector Metal detector Wall detector Industrial detector Features: 1.It can be used to detect wall studs, metal pipes and electrical wires. 2.It will remind you with sound signal and lighting when it detects wall studs, metal pipes and electrical wires. 3.Designed according to the ergonomics principle, it is comfortable to use. 4.Locates the edges of wood or metal studs up to 3/4 inch (20 mm) deep. 5.Perfect tools for the home renovate and decorate. Specifications: Material: ABS 1.Detection sensitivity (depth): up to 20mm 2.LED light: green and red 3.Power supply: 9V 6F22 battery (not included) 4.Size: 145 x 62 x 25mm colour: black Package includes: 1 x 3-in-1 handheld detector 1 xEnglish manual Note: Light shooting 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 +/- 1-3cm.