A switch includes a switch main body having a movable section displaceable downward by pressure to bring a movable contact into contact with a fixed contact, the movable section being displaced upward to open each contact by a release of pressure; a button section that presses the movable section in response to a downward pressing operation; and a support arm having one end portion supporting the button section. An end of the support arm not coupled to the button section is turnable and held at a location in a support surface arranged vertically. The button section bottom surface is inclined and separated from the movable section when the button section is not pressed. When the button section is pressed and is lowered to a position at which the fixed contact and the movable contact are closed, the bottom surface is in an approximately horizontal state and presses the movable section.