Abstract: A piezoelectric switch comprising an end surface which when pressure is applied, causes a piezoelectric element to switch and generate an electrical signal. In addition, the piezoelectric element provides audible feedback to an operator activating the switch. The piezoelectric switch comprises a plastic housing having the piezoelectric element adhesively attached to an inside surface of a top portion of the housing. Two wires from the piezoelectric element connect to a printed circuit board which is placed adjacent to the piezoelectric element and wires from the printed circuit board extend through a cap for external connections. When the piezoelectric element switches, an output pulse having a predetermined pulse width is generated along with a signal which is fed back to trigger an oscillator connected to the piezoelectric element causing it to buzz, thereby providing audible feedback from the same piezoelectric element.

Abstract: A ceiling mounted wireless wall switch which has three main parts a base, a cover and a printed circuit assembly. The printed circuit assembly is mounted on the base and the base is mechanically engaged to the cover. The base portion of the base has a peripheral edge which has a series of upwardly extending spring fingers spaced around the peripheral edge and the spring fingers are spaced from each other and adapted to engage the cover. The cover has a base section, a, first wall and a second wall circumscribed by the first wall. The first wall has an inner surface with a series of pairs of spaced ribs positioned on the inner surface of the first wall, each of the pairs of spaced ribs defining a slide area, each of the slide areas having an impression formed there on and each of the slide areas has a top which is spaced from the base section. The top is open and each of the spring fingers engages one of the impressions.