The MFRC522 RFID Card Reader Module is a low-cost, highly efficient 13.56MHz contactless reader/writer designed for embedded systems. It supports a wide range of MIFARE and ISO 14443A cards, making it ideal for access control, attendance systems, automation projects, and Arduino-based applications.

Key Features

• Operating Frequency: 13.56MHz
• Supported Card Types:
  • MIFARE 1K (S50)
  • MIFARE 4K (S70)
  • MIFARE Ultralight
  • MIFARE Pro
  • MIFARE DesFire
• High-speed SPI Interface: Up to 10 Mbit/s data transfer rate
• Low Power Consumption:
  • Operating Current: 13-26mA @ 3.3V
  • Idle Current: 10-13mA
  • Sleep Current: <80µA
• Compact Design: 40mm × 60mm
• Ideal for Arduino, NodeMCU, ESP32, Raspberry Pi and other microcontrollers.

Specifications

• Operating Voltage: 3.3V DC
• Peak Current: <30mA
• Operating Temperature: -20°C to +80°C
• Storage Temperature: -40°C to +85°C
• Humidity: 5% – 95% (non-condensing)
• Communication Interface: SPI

Applications of the RFID Card Reader Module

• RFID door lock/access control
• Attendance and identity verification systems
• smart security projects
• Automation & IoT applications
• Contactless card reading projects