An Introduction to RFID. The RC522 RFID module based on MFRC522… | by Ruthu S Sanketh | AUTONOMOUS ROBOTICS | Medium
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RC522 13.56MHz RFID Reader Module + Card + Key Fob - Arduino | Arduino, DIY \ Communication \ RFID & NFC
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Mifare 13.56Mhz RC522 RFID Card Reader Module [MFRC-522] - US $1.25 : HAOYU Electronics : Make Engineers Job Easier
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