CR038 rfid reader module Voltage: 4.5-5.5V Dimension: 60*40mm Interface: ... 1k,mifare 4k,desfire,i code sli NAMECR038 series Proximity Reader ModuleWeight30gDimensions60*40(mm)Temperature-20 +85CInterfaceRS232.COMS UARTRead Rangeup to ... 10cmFrequency13.56MHzSUPPORTISO14443A/B,ISO15693 C=TL Mifare 1K,Mifare 4K,Mifare Utralight,Mifare DesFire,Mifare ...