The Photon system produced by Deitech in its basic configuration, is made of two bars absolutely identical. The bars are placed at the two ends of the area to be controlled thus creating a true “infrared barrier”; the barrier are connected with just one cable to a hub. This is assembled in the Control Unit and from there it controls the whole system. The barriers are used for both transmission and reception of the beams, work in couple and exists in different versions: from 50 to 200 cm height, with or without heather, with maximum range varing from 25 to 50 meters.