Description: Precisely and quickly locate edges and center of metal nails, live AC wire, tubes, steel bars behind walls, floors and ceilings. 3 detect modes switchable: detect wood and metal studs up to 1-1/2 inch(38mm) deep; detect metal up to 2.36inch(60mm) deep; detects AC wire up to 2inch(51mm) deep. 2inch large LCD display screen with green backlight, easy to read. Function: sound warning, data hold, auto power off, low power display. Great assistant tool for indoor installation of TV, cabinet, shelves, LED lights. Specification: Horizontal measurement range: 0-360°(4x90°) Display accuracy: 0.01° (about 0-1°and 89-90°), other angles 0.05° Measurement accuracy: +/-0.1° (about 0-1° and 89-90°), other angles +/-0.2° Unit: degree °, percent% Size Chart: approx. 15.5x6.6x3.7cm/6.10x2.60x1.46inch Package Includes: 1 Piece Wall Stud Finder Note: Colors might be different due to different monitor display. Please allow slightly difference in size due to manual measurement.