RC522 RFID Module SPI 13.56MHz card and reader

The RC522 RFID module is a radio frequency identification (RFID) reader and writer that operates at 13.56 MHz. It uses the SPI communication protocol to communicate with a microcontroller or other device.

The module is typically used in access systems, inventory tracking, and other applications that require contactless identification. It can read and write data from the RFID card. RFID cards are small electronic devices that can be embedded into objects to allow identification.

The RC522 module usually has an antenna and can be powered by 3.3V or 5V. It has a range of up to 10 cm and supports ISO / IEC 14443A / MIFARE mode.

All in all, the RC522 RFID module is a versatile and affordable choice for integrating RFID functionality into electronic projects.