SunFounder Mifare RC522 Card Read Antenna RF Module RFID Reader IC Card Proximity Module for Arduino Supported card types: Mifare1 S50, Mifare1 S70, MIFARE Ultralight, Mifare Pro, and MIFARE DESFire. Power Voltage : 3.3V,Operating frequency: 13.56MHz. Data transfer rate: Maximum 10Mbit/s. Read Range: 0 ~ 35mm (mifare1 card), Module Interface: SPI.