Datalogic's S51 is a basic line tubular photoelectric sensor designed for various industrial applications. Available models, including DC versions, metal versions, as well as plastic versions among others, showcase capabilities that allow the device to reach a 20m maximum capacity. This device features through beam proximity, retroreflex polarized optic function, LED emission, radial and axial optics, and a choice between a 2m cable or a M12 4-pole connection.