A switch includes a case, fixed electrodes, a movable electrode and a pressing member. The fixed electrodes and the movable electrode are arranged inside the recess. The pressing member is arranged so as to cover at least a part of the recess, and displaces the movable electrode from the second position to the first position by a pressing force from the outside. The pressing member includes a first bent part and a second bent part, and a deforming part disposed therebetween. The deforming part is opposed to the movable electrode with a gap in a state where the movable electrode is in the second position. The deforming part is configured to be flexibly deformed toward the outside of the case in a state where the movable electrode is in the first position in which the fixed electrodes are in a conductive state.