A multifunctional switch having a push button placed on an upper surface, and an operating lever protruding laterally from the side thereof. Such systems can exhibit excellent energy conversion efficicency and stability and can utilize low-cost materials that are relatively safer and more environmentally friendly. The face detection module detects the images to obtain a face to be tested, and records coordinates of the face in the image. Opposed first and second longitudinal edges of the first surfaces of the first and second side members are each curved such that the first longitudinal edges are concave in shape. Such configuration avoids that the third conductive member is damaged in the connecting portion with the first or second conductive member by the thermal stress therein.