YST307GU series are RFID reader/writer module which pick or send command by USB ports. YST307GU series meet kinds of international contactless IC card standards. Also YST307GU series can support kinds of cards from suppliers. YST307GU series RF antenna is separated from the module. The RFID module can be very good at reading/writing and very stable for impedance analyzer adjusting between RF circuit and antenna. The module is connected to the antenna by the 50���© cable. It is with flexible antenna size and layout. Characters: The module is connected to the antenna by the 50���© cable. It is with flexible antenna size and layout. Qualifications PCD: NXP RC400 Working frequency: 13.56MHz RF standard: ISO15693 SAM card slot: 2 Cable to antenna: 60cm, can be custom-made, 0.1-1.5mm Operating distance: 80mm(depending on card and antenna design) Anti collision ability: Full functions anti collision; be able to process multi-card simultaneously; be able to set operate single card only. Auto detecting card: yes, default OFF EEPROM: 4K Interface: USB Max command length: 1024 Bytes Interface level: 3.3V Power consumption: 50mA Dimension: 80mm*60mm*8.5mm Package: DIP32 Weight about:100g