... for integrating into existing devices 2. Multi-interface: RS232, RS485, USB, TTL, SPI, C&D, ABA1/2, Wiegand CN3XX(S)(T ... on Linux OS, compatible to VC,VB/VB.NET, C++,C#.NET, DELPHI etc. It also offers special Host Demo ... good reference and understanding, using developing tools like Delphi, C++ Builder, C#, .NET, VC, VB/VB.NET etc.- APDU ... RF module with RS232, RS485, USB, TTL, SPI, C & D, ABA1/2, Wiegand