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Read and write 13.56 MHz MIFARE cards and tags — build door locks, attendance systems and cashless payments.
7-day returns on unused items · Return policy
The RC522 reads and writes MIFARE Classic and Ultralight cards at 13.56 MHz from a few centimetres away. With the MFRC522 library you can identify cards by their unique ID or store data on them, making it easy to build RFID door locks, school attendance registers, library systems or tap-to-pay demos.
| Chip | NXP MFRC522 |
|---|---|
| Frequency | 13.56 MHz |
| Supply | 3.3 V |
| Interface | SPI (also I²C/UART on chip) |
| Range | ≈ 3 – 5 cm |