RC522 13.56MHz RFID Module Description
The RC522 13.56MHz RFID Module is a compact and cost-effective RFID reader/writer module based on the MFRC522 chip. It operates at 13.56MHz and supports ISO/IEC 14443A compatible RFID cards and tags, including MIFARE Classic and MIFARE Ultralight series. The module communicates with microcontrollers through the SPI interface, making it ideal for use with Arduino, ESP32, Raspberry Pi, STM32, and other development boards. It is widely used in access control systems, attendance monitoring, smart locks, inventory management, and contactless identification projects.
With a typical reading distance of up to 3–6 cm, the RC522 provides reliable short-range RFID communication while maintaining low power consumption. The module includes an onboard antenna and is usually supplied with an RFID card and key fob for quick project development. It operates on 3.3V and offers fast data transfer speeds through its SPI interface.
Features
- Based on MFRC522 RFID reader IC
- Operating frequency: 13.56MHz
- Supports MIFARE Classic 1K/4K and ISO14443A compatible cards
- SPI communication interface
- Read and write capability
- Low power consumption
- Compact design with onboard antenna
- Reading distance up to 60mm
- Compatible with Arduino, ESP32, Raspberry Pi, STM32, and more
- Ideal for access control, attendance systems, and automation projects
Specifications
- Operating Voltage: 3.3V
- Operating Frequency: 13.56MHz
- Communication Interface: SPI
- Data Transfer Rate: Up to 10Mbps
- Reading Distance: 0–60mm
- Operating Current: 13–26mA
- Module Dimensions: Approx. 40mm × 60mm
- Supported Protocol: ISO/IEC 14443A
