Device for external and internal installation made of: body and cover in AISI 316 electropolished stainless steel or powder-coated aluminum, diffuser in transparent UV-resistant polycarbonate, high-performance reflectors in metallized 99.99% pure aluminum, high-gloss, oxidation- and iridescence-free, age-resistant silicone gasket, connection box in technopolymer with automatic safety switch to facilitate the connection of the power cable, LED versions including high-performance LED array, profile in anodized extruded aluminum for correct dispersion of the LED light source, external screws in stainless steel, connection box in technopolymer, concrete anchor screws available as an accessory, kit with cable gland for external through-wiring available as an accessory, base element for floor fixing in die-cast aluminum prepared by chemical surface treatment and coated with polyester powder