lugoben Feb 3, 2016:

Giovanni It would be nice if the manufacturer was known or a picture and more information was included, in order to know that it is either a group of key switches in a board (Interruptores de llave en un panel/tarjeta or just un panel de switches) .Then the key switch block is an electronic board that receives status signals set in the board of switches. Display board could be tarjeta/tablero de demostración/datos. As you can see there is missing enough information to find the solution that works.
Of course, there will be solutions that are literal interpretations which maybe far from the context and sometimes they get selected nonetheless.