Switch panel has a large number of switches in two arrays on either side of a center panel

摘要

The unit has a main housing (38) that is set into a protective shell (39) that is set into a recess in the wall. The center part has a center panel (11) and on opposite sides there are two arrays of push button switches (12) with a circuit board in the middle (34). When actuated the push buttons press against a spring (26) that provides a return force.