This is the RFID 13.56 MHz RFID Module Board kit, the module board that used on this kit has RC522 Integrated Circuit that drives the 13.56 MHz Radio Frequency. The MF RC522 is a highly integrated transmission for contact-less communication that runs on 13.56 MHz it support also the ISO 14443A/MIFARE mode library. This RFID kit has included the S50 RFID Card and ID Tag.SpecificationOperating Current :13-26mADC 3.3VIdle Current :10-13mADC 3.3VSleep Current: 80uAPeak Current: 30mAOperating Frequency: 13.56MHzSupported card types: mifare1 S50, mifare1 S70 MIFARE Ultralight, mifare Pro, MIFARE DESFireEnvironmental Operating Temperature: -20-80 degrees CelsiusEnvironmental Storage Temperature: -40-85 degrees CelsiusRelative humidity: relative humidity 5 Percent -95 PercentReader Distance: 50mm1.95(mifare 1 )Module Size: 40mm×60mm1.57x2.34Module interfaces SPI ParameterData transfer rate: maximum 10MbitsPackage Content:1x RC522 RFID Card Reader Module1x S50 RFID CARD1x S50 RFID TAG2x Straight & Angular Pins