An induction generator, for a wireless switch, having a magnetic element with north pole and south pole contact sections, and a coil core having pole contact sections, which can contact with the north pole contact section and the south pole contact section. The magnetic element and the coil core are disposed so as to be movable relative to one another so that a reversal of the magnetic flux direction in the coil core can be generated when switching between first and second idle position, which define a direction of relative movement, in which the north pole and the south pole contact sections each contacts the respective associated pole contact sections. The induction generator has a magnetizable sliding contact section for sliding guidance of the relative movement between the coil core and magnetic element, and this sliding contact section extends parallel to the direction of movement.