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This is Mr. Harry Yang from Jinmuyu Electronics Co., Ltd. if you want to know of the details about the following 13.56MHz rfid reader or rfid module, please contact me.

JMY6021 is a series of RFID read/write module with IIC, UART, RS232C and USB communication port. 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 integrated. The impedance between RF circuit and antenna was tuned by impedance analyzer, so the module has excellent performance and stability. It has EMV2010 certification ability in RF part, and with 2 SAM slots. Also very popular full fill payment system usage.
Qualifications
PCD: NXP MF RC500, MF RC531, SL RC400, CL RC632
PCB Layers：4
Working frequency: 13.56MHz
Supported standard: ISO14443A, ISO14443B, ISO15693, ISO7816
Anti collision ability: Full function anti collision; be able to set multi-cards or single card
Auto detecting card: Supported, default OFF, could be set
SAM slots: 2, T=0 & T=1 9600, 19200, 38400, 55800, 57600, 115200bps
Data FLASH: 512 Bytes
Power supply: DC 5V (±10%)
Interface: USB HID, RS232C, UART or IIC by order
Interface level: UART/IIC 3.3V (5V tolerance)
Communication speed:
IIC: Max.200Kbps
UART: 19200bps, 9600bps, 38400bps, 57600bps, 115200bps
USB: 2.0 HID class
Max. command length:
JCP04: 253bytes
JCP05: 510bytes
Power consumption: Max.150mA
Operating distance: 100mm (M1 typical distance, depending on card quality)
Dimension: 100mm * 70mm * 10.6mm
Weight: About 30g
ISP: Supported
RoHS: By order
Operating temperature: -25 to +85°C
Storage temperature: -40 to +125°C