RC522 RFID CARD READER MODULE

The MFRC522 RFID Card Reader Module is a compact RFID module designed to read and write 13.56 MHz RFID cards and tags based on the ISO/IEC 14443 Type A standard. It uses the MFRC522 RFID controller and communicates with microcontrollers through the SPI interface, enabling easy integration with Arduino, ESP32, STM32, Raspberry Pi, and PIC. The module provides fast data communication, low power consumption, reliable performance, and a typical reading distance of 2–5 cm, depending on the RFID tag and antenna. Due to its compact size and secure identification capability, the RC522 RFID Card Reader Module is widely used in access control systems, attendance monitoring, smart door locks, inventory management, contactless payment prototypes, identification systems, and IoT-based security applications.