Luminaire designed for frame recessed installation on walls, floors or ceiling. Suitable for power LED COB sources. Its body is made of Anticorodal aluminium, submitted to black anodizing treatment to guarantee durability over time and maximum resistance against atmospheric agents. The front ring nut is tightened and fixed to the body by a mechanical threaded coupling with silicone gasket and is available in stainless steel and, on request, it can also be made of AISI 316L stainless steel for Gem3 and Gem 3-S and of anodized aluminium for the EVO version. The specific diffuser in extra-clear glass, is integral to the body thanks to a silicone gaskets. Metallized precision optics or in PMMA for the EVO version allow long distance light propagation. The LED driver or power supply integrated to each luminaire for the EVO version, allow their power supply at 24VDC or at a mains voltage. The installation is allowed by tightening of 2 screws in stainless steel into plastic casing to be ordered separately, available in draining and waterproof version. The protection degree IP67 is ensured by a special waterproof cable gland. The connection has to be completed through appropriate waterproof connection systems to be ordered separately.