Indoor luminaire. Assembly: mounted in module ceilings, as well as plasterboard ceilings. The body material is aluminum. Colour - RAL 9005 (black). Dimensions: 236 x 236 x 97 mm. Mounting hole: 228 x 228 mm. Diffuser: Micro-PRM (micro-prismatic diffuser PMMA). The efficiency of the optical system is 66,23%. Beam angle: (C0-C180) / (C90-C270) - 76,4° / 77,6°. Light source type: LED. Colour of the light 4000 K. SDCM=2. CRI85. Lifetime of LED sources: 83000 (1) / 100000 (2) / 100000 (3) h L90/B10 (1) / L80/B10 (2) / L70/B10 (3). Luminaire luminous flux: 5452 lm. Power of luminaire: 51,2 W. Luminaire's light efficiency: 106,5 lm/W. Driver: standard on/off (E). Voltage 220..240 V, 50..60 Hz. Power factor cosφ: >0,95. Circuit load capacity: 19 (B10), 31 (B16), 32 (C10), 52 (C16). Operating temperature range: 5 ÷ 30° C. Protection degree: IP20/44. Impact resistant: IK04. Protection against electric shock: I. The luminaire can be made in CLO (Constant Lumen Output) version.