Being developed based on NXP's transponder IC, HF RFID Module SL015B-3 is a 13.56MHz reader/writer which complies with ISO15693 and supports I.CODE SLI and Tag_it HF I. It does auto Real-time detecting tag which moves into or out of detective rang and reports through one output pin's logic level. In addition, it integrates all necessary components and antenna into one PCB. The external Micro-controller can work with SL015B-3 to read/write ISO15693 cards and labels by simple serial communication commands.