... ) SAM socket for enhanced security, expandable on request3. Multi-interface: RS232, RS485, USB 2.0, TTL, SPI, Clock & Data / ABA1 ... .Firmware customized design to meet various requirement Application1. Embedded device, such as Handheld Terminal, Parking Meters, Vending Machines, ... ) Testing cards (7) Testing tags (8) RS232-RS485 converter module Mini RF module with RS232, RS485, USB, TTL, SPI, C & D, ...