... Mini RF module for integrating into existing devices 2. Multi-interface: RS232, RS485, USB, TTL, SPI, C&D, ABA1/2, ... adjust reading distance as optional.Customized service on module and antenna (size, position, etc) is ... system and GCC developing tool on Linux OS, compatible to VC,VB/VB.NET, C ... cards (7) Testing tags (8) RS232-RS485 converter module Mini RF module with RS232, RS485, USB, TTL, SPI, C ...