model: SM522 Current: 13~26mA/DC 3.3V Idle Current: 10~13mA/DC 3.3V Sleep current: <80uA Peak current: <30mA Operating Frequency: 13.56MHz Supported card type: Mifare 1k S50, Mifare 4k S70, Mifare UltraLight, Mifare Pro, Mifare Desfire Dimensions: 40mm×60mm Environmental Operating temperature: -20℃~+80℃ Environment Storage temperature: -40℃~+85℃ Relative Humidity: 5%-95% Module Interface SPI Parameters Data Transfer Rate: Max.10Mbit/s