RC522 – RFID Reader /Writer with Cards Kit includes a 13.56MHz RFID-RC522 Reader/Write Module, standard blank RFID chip, Straight header strip, right-angle header strip and a special shaped RFID tag keychain. It uses SPI to communicate with microcontrollers. It supports ISO/IEC 14443 A/MIFARE.

Flexible interrupt modes | Power-down by software mode | Programmable Timer | 2.5 V to 3.3 V power supply | CRC coprocessor | Internal self-test | Highly integrated analog circuitry.

The RC522 operates on 13.56MHz enabling two way (read and write) contact-less communication with a transmission rate up to 424 Kbit/s. It is commonly used in attendance systems and security systems to provide authorization.

Voltage:DC 3.3V (Do not use 5V supply) | Operating Current:13-26mA | Idle Current:10-13mA | Operating Frequency:13.56MHz | Operating Temperature Range:-20 to 80 °C | Max. operating distance in reading/Write mode:50mm | SPI data rate (Mbit/s):10 | Peak Current:< 30mA | Sleep Current:< 80 μA | Storage temperature:-40 to 85 °C | Transfer speed communication:848kBd