... card reader1.RFID reader frequency:13.56mhz 2.RFID reader interface:USB,RS232 3.High performance and competitive price.OverviewRF-30 Series RFID Reader, with ... its compact nice appearance, multi-interface and multi-power supply mode, support multi-protocol rfid card ... financial and others.ApplicationsOn desk reader for Mifare proximity card, (configurable read only type), Used in POS, ...