Indoor luminaire. Assembly: surface mounted on ceiling. The body material is steel sheet. Colour - RAL 9016 (white). Dimensions: 620 x 620 x 78 mm. Weight 6,1 kg. Diffuser: PLX (PMMA opal). The efficiency of the optical system is 74,50%. Beam angle: (C0-C180) / (C90-C270) - 105° / 104,8°. Light source type: LED. Colour of the light 4000 K. SDCM=3. CRI>80. Lifetime of LED sources: 100000 h L80/B10. Luminaire luminous flux: 4010 lm. Power of luminaire: 27,8 W. Luminaire's light efficiency: 144,2 lm/W. Driver: standard on/off (E). Voltage 220..240 V, 50..60 Hz. Power factor cosφ: >0,95. Circuit load capacity: 20 (B10), 33 (B16), 32 (C10), 51 (C16). Operating temperature range: 5 ÷ 30° C. Protection degree: IP65. Impact resistant: IK04. Protection against electric shock: I. Photobiological risk class (IEC/EN 62471): RG0.