LED high-bay luminaire total power: 238 W, includes DALI- and emergency supply-compatible LED converter, die-cast aluminium housing in matt, white. Powder-coated cooling ribs for optimum thermal management and minimal dust accumulation. Cover of transparent polycarbonate. Slave luminaire for DALI control (DALI only) with LED converter. LED service life lasts 50000 h before luminous flux is reduced to 90% of the initial value over the entire ambient temperature range. passive infrared motion detector integrated for sensor heights of up to 16m. 100% light when person detected in room. When the area is unoccupied and after the time delay (10 minutes) the luminaire dims to 10% and maintains this value until the next occupancy detection. The daylight function utilises existing daylight and dims the luminaire down to the set lighting level. If at least 150% of the desired lighting level exists for more than 10 minutes, the luminaire switches off completely and only switches on again if the desired lighting level is fallen below. Chromaticity tolerance (initial MacAdam): 3. Luminaire luminous flux: 33800 lm, Luminaire efficacy: 142 lm/W.Colour rendering Ra > 80, colour temperature 6500 K. Sealed, high-efficiency optical lens system, Luminaire with symmetric narrow light distribution (narrow beam) , UGR <22. Pre-assembled 5 x 1mm² connecting cable, length 1.5m, with free ends, included in scope of supply (suspension with at least 250 mm distance to ceiling); Luminaire wired with halogen-free leads and contains no silicone. Please note: please talk to your adviser if you planning to use the luminaire in environments containing chemical pollutants. Class of protection: SC1; degree of protection: IP65; ambient temperature: -20°C to +45°C; Dimensions: 800 x 330 x 159 mm. Weight: 11 kg.