1. Mini RF module for integrating into existing devices 2. Multi-interface: RS232, RS485, USB, TTL, SPI, C&D, ABA1/2, Wiegand CN3XX(S ... your fast testing and evaluation.Package list:(1) Testing board (2) Power supply (9V) (3) Serial communication cable (4) USB communication ... cards (7) Testing tags (8) RS232-RS485 converter module Mini RF module with RS232, RS485, USB, TTL, SPI, C & D, ABA1 ...