The IB1005 includes the following blocks:
Opto-isolated inputs (8 in total, 4 can be used to connect two Wiegand or clock/data readers).
Six high-current mechanical relays (both normally-opened and normally-closed terminals are provided).
RS232/485 port (RX/TX signals for the RS232, TX/RX+ and TX/RX- for the RS485).
Control lines for 8 LEDs on the LB1001 board (the board must be ordered separately).