1. Support II2, SPI and HSU (High Speed UART)
2. RFID reader/writer mode support
Mifare 1k, 4k, Ultralight, and DesFire cards
ISO/IEC 14443-4 cards such as CD97BX, CD light, DesFire, P5CN072 (SMX)
Innovision Jewel cards such as IRT5001 card FeliCa cards such as RCS_860 and RCS_854
3. Plug and play, Arduino compatible
4. Built in PCB Antenna, with 5cm~7cm communication distance
5. On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI
6. Work as RFID reader/writer
7. Work as 1443-A card or a virtual card
8. Support NFC with Android phone
9. Small size: 43mm*41mm*4mm
VCC: 3.3V~5V
I2C/UART: 3.3V~24V TTL
SPI: 3.3V TTL with 100 ohm resistors in series. It could be connected directly to 5V interface of microcontroller such asArduino.