Detailed Product Description 1*4 keypadsDustproof, waterproof, shake-proof, pickproof, drill-proof, bombproof;CE, FCC, RoHS CertificationApplications: Self-service terminal, internet kiosk, industrial control, medical device; Compatiable with Win 98/ME/2000/XPInterface: PS/2, USB, RS232Size: 116*27mm