Aluminium profile with a square edge for steps, it has a 20 mm footstep surface with non-slip slots, that enhance safety and give a striking finishing to the steps. A photoluminiscent plate has been placed on the visible part of the profile in order to make it visible in dark areas. This LISTELLO has undergone the Standard Test Method for Photonic Luminance of Photoluminescent ASTM E 2073-07, which enables it to provide a visibility of around 4 hours and a half after 10 mn of activation at 150 lux. It was designed to mark the evacuation routes or to shed light in the dark and thus making it easier to comply with the current security standards while reducing the cost of this compliance. This listello can be used both in tilings and floorings. EUROSTEP-251A is applied during construction work.