... out. ( Option)Face Recognition, can avoid unauthorized people entering the electronic chips area.(Option)Image transmission function, the record can keep ... :275mm(L)*236mm(W)*270mm(H)N.W:3.12kgMax Load:150kgAlarm Display:LCD of Metal Size, Clock display.Alarm Method ... English Alarm. (Option)Detection: Shoes and Leg.Type of Metal:Electronic Chips, Detonator, Gun, Knife etc.Where to use: Prisons, Jails ...