Simple PN532 module. Small dimension and easy to embed into your project I2C, SPI and High Speed UART support, selectable with SMD toggle switch Support RFID reading and writing, P2P communication with peers, NFC with Android phone RFID reader/writer supports: 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 Up to 5~7cm reading distance On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI Arduino compatible, plug in and play with our shield