JMY612 is a series of RFID read/write module with "USB HID, RS232C, UART or IIC communication port" and "EMV2010 certification ability". It has various functions and supports multi ISO/IEC standard of contactless card. The RF protocol is complex, but the designer combined some frequent used command of RF card and then user could operate the cards with full function by sending simple command to the module.
The module and antenna is split, connected by 50ohm coaxial cable. The impedance between RF circuit and antenna was tuned by impedance analyzer, so it has excellent performance and stability. It has 4 SAM slots and 512K bytes data FLASH, with full fill payment system usage and flexible antenna size and layout.