Round surface mounted luminaire, housing in die-cast aluminium; central decorative panel held by magnet; surface anodised and white, black or dark grey powder coated; opal cover for completely homogeneous illumination; with increased transmission and diffusion; energy-efficient LEDs with very good colour rendering; binning initial ≤ 3 MacAdam; available in the light colour 3000K; CRI ≥ 80; min. 80 % of the luminous flux after 50000 hours; degree of protection IP 54, with pressure equalisation valve; PC I; shock resistance IK09; ambient temperatures from -20°C to + 50°C; ø360mm: separate luminaire wiring compartment, suitable for through wiring