MFRC-522 RC522 RFID Card Reader Module
13.56MHz RFID / NFC reader for Arduino and Raspberry Pi
The RC522 module is built around the NXP MFRC522 contactless reader IC. It reads and writes 13.56MHz ISO/IEC 14443 A cards and tags such as MIFARE Classic, making it a popular choice for access control, attendance and RFID projects with Arduino, ESP32 and Raspberry Pi.
Key Features:
NXP MFRC522 reader/writer IC
Supports ISO/IEC 14443 A / MIFARE cards and tags
SPI interface (the IC also supports I2C and UART)
Widely supported by Arduino and Python libraries
Specifications:
Operating frequency: 13.56MHz
Supply voltage: 3.3V
Typical read distance: a few centimetres, depending on card and antenna