1. Mini RF module for integrating into existing devices 2. Multi-interface: RS232, RS485, USB, TTL, SPI, C&D, ... OS, compatible to VC,VB/VB.NET, C++,C#.NET, DELPHI etc. It also offers special ... and understanding, using developing tools like Delphi, C++ Builder, C#, .NET, VC, VB/VB.NET etc.- ... fast testing and evaluation.Package list:(1) Testing board (2) Power supply (9V) (3) Serial communication cable ( ...