This portable metal scanner is a special device for security inspection. Its main features include acoustic and LED indication, automatic scanning with rapid response to small items, and changing tone depending on the size of the metal object. Working frequency 52 kHz ± 10%, powered by 9V battery, headphone connector 3.5 mm, low 9V battery indicator. Optional quiet mode and vibration mode. For use primarily for security checks of persons at airports, playfields, stadiums, prisons and places of entertainment. The device makes it possible to find hidden weapons, knives and other metal objects in luggage and mail parcels.