Multi-mode Stud Finder with Depth Ranges

This 4-in-1 wall scanner is 13.5 cm long, 6.5 cm wide and 3.2 cm thick, weighing 180 g. It supports four scanning modes: STUD detects wood beams and joists up to 0.75 inches deep in drywall; DEEP locates wood and metal up to 1.5 inches deep; METAL identifies pipes, rebar, aluminium and copper up to 2.36 inches deep; AC detects live wires up to 2.0 inches deep. It uses an LED display and audible tone for real-time feedback. Calibration is automatic and mode-dependent — performed on the wall for STUD and DEEP modes, and in free air for METAL and AC modes. Powered by 2 × AAA batteries (not supplied).