... . Mini RF module for integrating into existing devices 2. Multi-interface: RS232, RS485, USB, TTL, SPI, C&D, ABA1/2, Wiegand CN3XX ... =1) to enhance security.The Mini size module with multi-interface is flexible to do integration and compatible to Comprehensive Operation ... =1) SAM socket for enhanced security, expandable on request3. Multi-interface: RS232, RS485, USB 2.0, TTL, SPI, Clock & Data / ABA1,2 ...