RFID IC Wireless Module MFRC-522 RC-522 RC522 IC KEY SPI Writer Reader IC Card Proximity for Arduino

RC522 13.56MHz RFID Reader Module Set

The RC522 is a compact contactless RFID reader/writer module based on the MFRC522 reader IC. It communicates with a host microcontroller through SPI and is intended for authorized access-control prototypes, asset identification, attendance projects, and RFID learning applications.

Key Specifications

• Reader IC: MFRC522 / RC522.
• Operating frequency: 13.56MHz.
• Host interface: SPI.
• Module supply and logic level: 3.3V.
• Protocol family: ISO/IEC 14443 Type A compatible transponders.
• Data transfer rate: up to 424kbit/s.
• Typical module size: approximately 37.5 x 33mm.

Integration Notes

• Designed for Arduino-compatible, ESP32, STM32, MSP430, and other microcontroller projects with an SPI interface; it is not an official Arduino product.
• Use 3.3V power and 3.3V SPI logic. Do not connect 5V logic signals directly without appropriate level shifting.
• Compatible card types depend on the card technology and your firmware configuration. Confirm that your tag or card is ISO 14443 Type A compatible.
• Use only with cards, credentials, and systems you own or are authorized to administer.

Options

• 1 set: one RC522 reader set.
• 2 sets: two RC522 reader sets.
• Included card, key-fob, and header accessories follow the selected set and product images.