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PN532 NFC RFID Read Write Module V3 KitFeatures-Support II2, SPI, and HSU (High-Speed UART)I2C / UART: 3.3V ~ 24V TTLSPI: 3.3V TTL with 100-ohm resist..

RFID Reader/Writer RC522 SPI S50 with RFID Card and TagFeatures-Highly integrated analog circuitry to demodulate and decode responses.Supports ISO/IEC..