Wiring of power supply has been done. Projectors, sim, computers and network environment can now be switched on and off via the central 19" computer rack. This is more a matter of convenience than a technical issue. Due to the narrowness of the room and the projection area we don't want to crawl just to switch on some power.
Projectors are wired.
Central power supply with relays
Power switches inside the 19" computer rack