1.Connect card reader to PC or terminal by USB interface
2.The green light and red light on ,then buzzer call .It will The red light and buzzer off after 0.5s ,then it will be in ready status .,
3.When the magnetic card was swipped and the data is right ,the buzzer will ring and 3 second off .Otherwise ,the red light will be on and buzzer bilnk three time (interval is 1s) ,then enter into awating status.
4. swipe the card reader and the data will be showed .