Indoor luminaire. Assembly: surface mounted on ceiling. The body material is steel sheet. Colour - RAL 9016 (white). Dimensions: 620 x 620 x 78 mm. 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 temperature – 3000 K/blue colour. SDCM=3. CRI>80. Lifetime of LED sources: 60000 h L80/B10. Luminaire luminous flux: 3782/933 lm. Power of luminaire: 27,8/17 W. Luminaire's light efficiency: 136/54,9 lm/W. Driver: standard on/off (E). Voltage 220..240 V, 50..60 Hz. Power factor cosφ: >0,95. Circuit load capacity: 12 (B10), 20 (B16), 19 (C10), 31 (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.