Series: TRIONA round Decorative round LED surface-mounted luminaire. Flat, seamless frame: aluminium extrusion profile, powder coated. Cover made of sheet steel, powder-coated. Direct light emission through a diffuser plastic opal/prismatic. Indirect light emission through a flush diffuser made of satin-finish plastic. Lightguide and diffuser made of non-yellowing plastic (PMMA). Lateral light emission (RZB SIDELITE technology) for above-average homogeneous light distribution. Direct 70%, indirect 30% light emission. Tunable white versions, dynamically adjustable from 2700 K to 6500 K. Suitable for Human Centric Lighting (HCL) in combination with RZB light management systems. Suitable for Ceiling mounting, Wall (surface). Tool-free mounting via bayonet connection. Very easy installation thanks to plug-and-play connector system. Integrated DALI converter for controlling, switching and dimming. Perfect for office areas (RUG < 19) and environments with computer screens in accordance with EN 12464-1. Colour: traffic white, matt (RAL 9016) Diameter: 461 mm Height: 88 mm Lamp: LED Socket: without socket Colour temperature: 2700K - 6500K Colour rendering index (CRI): 80 System power: 38 W Rated luminous flux: 3250 lm Beam angle Down: 95° Luminous efficiency: 86 lm/W System power 2: 39 W Rated luminous flux 2: 3100 lm Luminous efficiency 2: 79 lm/W System power 3: 39 W Rated luminous flux 3: 3150 lm Luminous efficiency 3: 81 lm/W Control gear: Converter, dimmable, DALI Protection class: I Type of protection: IP 20