Indoor luminaire. Assembly: surface mounted on ceiling. The body material is steel sheet. Colour - RAL 9016 (white). Dimensions: 400 x 400 x 60 mm. Weight 5,2 kg. Diffuser: PC (opalescent polycarbonate). The efficiency of the optical system is 75,27%. Beam angle: (C0-C180) / (C90-C270) - 106,6° / 106,2°. Light source type: LED. Colour of the light 4000 K. SDCM=3. CRI>80. Lifetime of LED sources: 100000 (1) / 147000 (2) h L80/B10 (1) / L70/B50 (2). Luminaire luminous flux: 3436 lm. Power of luminaire: 24,7 W. Luminaire's light efficiency: 139,1 lm/W. Driver: standard on/off (E). Voltage 220..240 V, 50..60 Hz. Power factor cosφ: >0,95. Circuit load capacity: 30 (B10), 48 (B16), 43 (C10), 70 (C16). Operating temperature range: -25 ÷ 30° C. Protection degree: IP65. Impact resistant: IK10. Protection against electric shock: I. The luminaire can be made in CLO (Constant Lumen Output) version.