1. Mini RF module for integrating into existing devices 2. Multi-interface: RS232, RS485, USB, TTL, SPI, C&D, ABA1/2, Wiegand CN3XX(S ... (T=0,T=1) to enhance security.The Mini size module with multi-interface is flexible to do integration and compatible to ... (6) Testing cards (7) Testing tags (8) RS232-RS485 converter module Mini RF module with RS232, RS485, USB, TTL, SPI, C & D, ABA1/2, Wiegand