RFID-RC522 RF IC Card Sensor

RFID-RC522 RF IC Card Sensor Module – 13.56 MHz

The RFID-RC522 RF IC Card Sensor Module is a highly reliable and widely used contactless identification and access-control module operating at 13.56 MHz. It is designed for short-range RFID communication and is fully compatible with Arduino, ESP8266, ESP32, Raspberry Pi, and other microcontroller platforms.

This module is based on the NXP MFRC522 RFID controller and supports MIFARE cards and tags. The kit typically includes an RC522 reader board, a white RFID card, a blue RFID key fob, and male header pins, making it ideal for quick prototyping and educational use.

Key Features

• Operates at 13.56 MHz RFID frequency

• Based on MFRC522 high-performance RFID IC

• Supports contactless card and tag reading

• Fast read/write capability

• Low power consumption

• Compact design suitable for embedded systems

• Includes RFID card, key fob, and header pins

Working Principle

The RFID-RC522 module generates an electromagnetic field at 13.56 MHz. When an RFID card or tag enters this field, it is powered wirelessly and transmits its unique identification (UID) back to the reader.

The module processes the received data using the MFRC522 IC and communicates the card information to the microcontroller via SPI communication protocol.

Supported Cards & Tags

• MIFARE 1K

• MIFARE 4K

• MIFARE Ultralight

• ISO/IEC 14443A compliant cards and tags

Pin Configuration

• SDA / SS: SPI chip select

• SCK: SPI clock

• MOSI: SPI master-out slave-in

• MISO: SPI master-in slave-out

• IRQ: Interrupt (optional)

• GND: Ground

• RST: Reset

• 3.3V: Power supply (⚠️ 5V not supported)

Technical Specifications

• Operating Voltage: 3.3V DC

• Operating Frequency: 13.56 MHz

• Communication Interface: SPI

• Read Range: Up to 5–7 cm (depends on card and environment)

• IC Type: MFRC522

• PCB Color: Blue

Applications

• RFID-based access control systems

• Attendance and identification systems

• Smart door locks

• IoT security projects

• Arduino and Raspberry Pi projects

• Educational electronics and training kits

Image & Design Specifications (As Provided)

• Clean white background

• All unnecessary objects and watermarks removed

• Brand logo placed at the top-left corner, scaled 3× smaller than the component

• Image Resolution: 800 × 800 pixels

• File Size: Approximately 80 KB

• Resolution: 96 DPI

• Color Depth: 24-bit