PN532 NFC NXP RFID Module V3 User Kit Near Field Communication Reader Writer Module Kit I2C SPI HSU with S50 White Card Key Card for Raspberry Pi DIY Smart Phone

["PN532 gilt PCB and Small dimension and easy to embed into your project , support I2C.SPI and HSU (high speed UART), change between those modes","Typical Operating Distance have been updated to 5cm~7cm reading distance, work in NFC Mode or RFID reader/writer mode","On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI","Work as RFID reader/writer, work as 1443-A card or a virtual card","Exchange data with other NFC devices such as smartphone"]