Sunson S6029 non-encryption Metal keypad High Quality stainless panelDustproof, waterproof, shake-proof, pickproof, drill-proof, bombproofCE,FCC, RoHs ... : PS/2, USB, RS232Size: 77.6*27mm Stainless steel functional keypad(S-6029) for self-service terminal,internet kiosk,industrial control,medical device