Wow! There's some hi-tech stuff here, mostly of the mimic diagram variety. By way of balance, I offer my creation; an old-fashioned lever frame! The levers were soldered up from brass stock and glued to miniature DPDT toggle switches. The DIN socket on the right accepts 2 x 16Vac supplies from a Gaugemaster M1 transformer. The middle socket takes a Gaugemaster Combi controller and the one of the left is a 0 - 12Vdc output used for testing track and powering up a rolling road.