Specifications:
Easy to change mode: with a small SMD toggle Switch, it becomes very easy to change among IIC, SPI, and HSU modes
Longer distance: the reading distance becomes 5~7cm, compared with 4~6 cm of the last version
Built-in PCB Antenna, with 5cm~7cm communication distance
On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI
Work as an RFID reader/writer
Work as a 1443-A card or a virtual card
Compatible with Arduino Board.