Surface-mounted luminaire in superelliptical shape for ceiling and wall mounting, high ease of maintenance, no UV and heat radiation, light share: direct 87% / indirect 13%, evenly round light distribution, decorative ring made of brushed or black aluminum, simple surface mounting of the technical unit, luminaire body made of glossy opal acrylic glass (bayonet lock), 5-pin connection terminal, operating device (LED converter DALI, dimmable) integrated