Abstract: A dimmer control switch assembly for activating an incandescent lamp bulb or similar controlled appliance or device to assume any of three different illumination intensity states and an OFF state, wherein a Rubik's cube modified to include two magnets forms the activator member. The cube activator member, for example having twenty-seven square cubic elements, has a control face providing four corner cubic elements, the adjoining pair of cubic elements adjacent one of the corner cubic elements each having a button magnet inwardly adjacent their lower faces. A base unit in the shape of a tray member has an upwardly opening square well to receive the control face and adjacent bottom portions of the Rubik's cube activator member nested therein and includes electronic circuitry and magnetically responsive reed switches to be closed in different combinations for four different dispositions of the activator member to activate the lamp at the different states.