Ask for Latest offer / Availability : https://bit.ly/39i11gN Small size, it is easy to embed into your designs Support for I2C, SPI, HSU (high-speed UART), you can easily switch between these communications, you can easily switch the communication through the lower left corner of the board toggle switch, detailed operation method can refer to the product manual Work in NFC Mode or RFID reader / writer Mode Mifare 1k, 4k, Ultralight, and DesFire card 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 Plug and Play compatible.