LYSGARDIN

A light curtain having at least two electronic cards which are arranged behind one another and on which a plurality of light transmitters and/or light receivers are arranged in series, wherein the electronic cards are each connected to one another by a mechanical connection element and the electronic cards are held in a housing, wherein the housing is formed as a profile housing, wherein the first electronic card and the last electronic card are fixed to the respective housing end in the longitudinal direction so that the last light transmitter and/or light receiver of the first electronic card and of the last electronic card, said last light transmitter and/or light receiver contacting the housing end, has a fixed defined spacing from the housing end, and wherein the connection element has a minimal spacing and a maximum spacing between the electronic cards.