Technical Parameters Support CARDS such:EM4001 or and compatibility of apms RFID CARDS.Data formats: STX beginning, followed 10 decimal serial number, CR, LF, ETX end, ten decimal serial number for RFID CARDS serial number after four bytes hexadecimal conversion formation.Communication format: RS232 (9600, n, 8, 1), ASCLL coding.Reading card distance: greater than 80mm..Output interface: through nine holes serial interface.Power-supply modes: the keyboard mouth take electricity.