USB RFID reader *125Khz RFID reader for EM,TK ,ID ... reader for access control *20 years experience for ID reader USB RFID reader * 125Khz RFID reader for EM,TK card* ... LF USB RFID reader for access control*20 years experience for reader ... EM,TK4100,4102,4200 ,ID card 2.Protocol: ISO11784/117853.Port: USB4.Power supply: DC5V 5.Reading distance:3-6cm6.Indicator ...