RFID Technology: Uses 13.56 MHz frequency for contactless communication.

Chipset: Built around the MFRC522 IC from NXP.

Interface: Supports SPI, I2C, and UART communication protocols (SPI is most commonly used).

Operating Voltage: 3.3V (logic level); ensure proper voltage shifting when using with 5V microcontrollers.

Operating Current: ~13-26mA (active mode).

Read Range: Up to 5 cm (depends on tag type and antenna alignment).

Supported Cards: Compatible with ISO/IEC 14443 Type A cards (e.g., MIFARE Classic 1K/4K).

Data Transfer Rate: Up to 424 kbps.

Compact Design: Small form factor, easy to integrate into embedded systems and DIY electronics.

Antenna Included: Onboard PCB trace antenna for convenient short-range reading.

LED Indicator: Built-in LED for power/status indication (depends on module version).

Development Support: Widely supported in Arduino, Raspberry Pi, ESP32, and other microcontroller platforms.