support managing different authority people access in different time.It could control 1-4 doors with one controller. The system includes:1.Main controller:JBC5100(RS232/485), JBC7100(TCP/IP)2.Mifare reader: JBC506,JBC202, JBC302(with keypad) or EM reader: JBC526, JBC826, JBC328(with LCD and keypad)3. E-lock4. RS232/485 converter5. Management software(optional)6. Open button (optinal)