PCB to build the Displays card.
Controls up to 7 10-amperes/250-volts relays.
Two different versions can be built with the same PCB:
* USB version: connects to USB port or to Master card. Includes 5 8-bits analogue axles.
* Reduced version: connects only to Master card. Doesn't include analogue axles.
* Cards not assembled and tested by us, aren't cover by the warranty nor technical support