1 Have beautiful appearance, easy to use 2 Can save your time 3 Button is exquisite, service life long 1 Have beautiful appearance, easy to use 2 Can save your time 3 Button is exquisite, service life longtypeHQH05Display LCD displayKeypad11 number keys, 10 function keysInterfaceRS232, PS/2, TTL connectionPower supply12V DCConnectorRS485SecuritySoftware controlled DES/3DES & DUKPT key ...