This module plugs on to the RX16 mother board to give an extra 4 outputs.
The RX16 comes with one module as standard which acts on codes 1 to 4.
If a PC4 is plugged on to the second position it will act on codes 5 to 8.
The third position is 9 to 12 and the fourth is 13 to 16.

SPECIFICATION:
Four transistor outputs.
Outputs can be set as "normally closed" or "normally open".
Zones may be selected to be inhibited with the external inhibit function.
Automatically adjusts to the appropriate four zones according to the position in which it is fitted.