Series: FLAT SLIM round Decorative round LED surface-mounted luminaire for indoor and outdoor use. Base: pressure die-cast aluminium, powder-coated. Standard Gore© Protective Vents diaphragm valve to avoid condensation. Diffuser made of non-yellowing plastic (PMMA), opal. Diffuser fastening: bayonet system. Uniform lighting achieved by the use of LED panel boards. Suitable for Ceiling mounting, Wall (surface). Very easy installation thanks to plug-and-play connector system. The large connection compartment on the back for convenient connections is also ideal for through wiring. MultiLumen: 2 steps adjustable luminous flux. Factory-set to maximum luminous flux. MultiColour: Colour temperature individually adjustable either 3000 K or 4000 K via switching element. Factory setting 3000 K. Dimmable DALI. Luminaire with limited surface temperature in accordance with EN 60598-2-24 for use in environments where conductive dust deposits on the luminaire can be expected. Colour: traffic white, matt (RAL 9016) Diameter: 400 mm Height: 70 mm Lamp: LED Socket: without socket Colour temperature: 3000K, 4000K Colour rendering index (CRI): 80 System power: 20 W Rated luminous flux: 2400 lm Beam angle Down: 131° Luminous efficiency: 120 lm/W System power 2: 20 W Rated luminous flux 2: 2500 lm Luminous efficiency 2: 125 lm/W System power 3: 33 W Rated luminous flux 3: 4000 lm Luminous efficiency 3: 121 lm/W System power 4: 32 W Rated luminous flux 4: 4150 lm Luminous efficiency 4: 130 lm/W Control gear: Converter, dimmable, DALI Protection class: I Type of protection: IP 65