... for enhanced security, expandable on request3. Multi-interface: RS232, RS485, USB 2.0, TTL, SPI, Clock & Data / ABA1,2 / ... ) Testing board (2) Power supply (9V) (3) Serial communication cable (4) USB communication cable (5) Wires (6) Testing cards (7) Testing tags ... (8) RS232-RS485 converter module Mini RF module with RS232, RS485, USB ...