RFID Module RC522

The RFID Module RC522 is a highly popular, low-cost, and compact RFID reader/writer module used for contactless communication and identification applications. Operating at 13.56 MHz frequency, it supports multiple RFID tags/cards standards including ISO/IEC 14443 Type A/MIFARE cards. The module communicates with microcontrollers like Arduino, Raspberry Pi, ESP32 through SPI interface, making it ideal for projects such as access control, attendance systems, asset tracking, and security systems. The RC522 module includes an onboard antenna and offers fast tag detection and reading speeds, perfect for both hobbyist and professional use.

Key Features:

• Supports 13.56 MHz RFID frequency

• Compatible with ISO/IEC 14443 Type A cards and tags

• SPI, I2C, and UART communication interfaces (SPI most common)

• Onboard PCB antenna for easy integration

• Low power consumption and fast response time

• Communicates easily with Arduino, Raspberry Pi, ESP32, and other microcontrollers

• Supports reading and writing RFID cards and tags

• Compact and lightweight design for embedded applications

• Ideal for access control, security, inventory management, and automation projects

Specifications:

• Model: RFID RC522 Module

• Operating Voltage: 3.3V DC (do not exceed to prevent damage)

• Communication Interface: SPI (default), I2C, UART (optional)

• Operating Frequency: 13.56 MHz (HF RFID)

• Read Range: Up to 5 cm (varies by tag and environment)

• Compatible Tags: MIFARE 1K, 4K, Ultralight, and other ISO/IEC 14443 Type A tags

• Current Consumption: Typically 13-26 mA

• Operating Temperature: -20°C to +85°C

• Dimensions: Approx. 40mm x 60mm x 5mm