RC522 RFID 13.56Mhz Module/Unit I2C/SPI Proximity Module Reader IC S50 Key Tag
RC522 Module. Model: RC522. 1 13.56MHz RFID Reader Writer Module SPI Interface IC Card RF Sensor RC522. Mini RC522 Module. RC522 Module (only pin). RC522 Unit. Main Chip: S50. 5PCS IC RFID Card.