Electrical device consisting of a flat insulated surface that contains switches and dials and meters for controlling other electrical devices. Synonyms:board, control board, instrument panel, panel."Suddenly the board lit up like a Christmas tree"
... movements and other drills, and got him to send out a wave of heat which the boys could instantly feel. Tom was even able to make the robot aim its wave energy so as to short-circuit a switch on an electrical control panel. ... — Tom Swift and The Visitor from Planet X • Victor Appleton