1. Mini RF module for integrating into existing devices 2. Multi-interface: RS232, RS485, USB, TTL, ... T=1) to enhance security.The Mini size module with multi-interface is flexible to do integration ... SAM socket for enhanced security, expandable on request3. Multi-interface: RS232, RS485, USB 2.0, TTL, ... ) Testing tags (8) RS232-RS485 converter module Mini RF module with RS232, RS485, USB, TTL, SPI, C ...