... enhanced security, expandable on request3. Multi-interface: RS232, RS485, USB 2.0, TTL, SPI, Clock & Data / ABA1,2 ... Firmware customized design to meet various requirement Application1. Embedded device, such as Handheld Terminal, Parking Meters, Vending Machines, ... change without notice. Further Application DevelopmentCNReader SDK is software development kit worked with CN3XX and CN6XX product series ...