An elegant square downlight for office lighting. Painted die-cast aluminum frame. A highly permeable frosted diffuser that is retracted by 60 mm for reduced glare: UGR 19. Evenly diffused light on the plane of the diffuser. An aluminum heat sink provides passive LED cooling. Fast assembly thanks to using steel springs. 2 light distribution angles: 68° and 78°, and emergency versions with 1 h and 3 h backup duration are also available. Luminaire type: Downlights; Mounting type: recessed mounting; Mounting location: ceiling; Luminous flux: 1200lm - 2300lm; Maximum luminous efficacy: 133lm/W; Correlated color temperature: 3000K, 4000K ; Color rendering index (CRI): >80; Median useful life: L70 - 176000 h,L80 - 111000 h,L90 - 53000 h; Standard Deviation of Color Matching (SDCM): SDCM <3; Photobiological risk group: 1; Luminous intensity distribution direction: direct; Energy efficiency class: D; Practical emergency lamp flux (PELF): 1300lm - 2300lm; Beam angle: 78°, 68°; Duration time: CB; Emergency lighting control system: CB 220; Luminous intensity distribution: wide; Frame color: white, RAL9010; Luminous intensity distribution geometry: symmetrical; Unified glare rating (UGR): 18 - 22; Angle 65° luminance: 1623, 1129; Voltage: 230V AC, 230V AC/DC; Power: 9W - 23W; Wired lighting control: ON/OFF, DALI, CB 220; IP Code: IP20; IEC protection class: II; Diffuser material: PC; Diffuser type: frosted; Reflector material: aluminum; Reflector surface: matte; Housing material: Painted aluminum sheet; Luminaire shape: square; Permissible ambient temperature range: from 0°C to 25°C; Connector type: 3-pole, 5-pole; Dimensions: Height: 158mm, Width: 215mm, Length: 215mm, ; Ceiling opening dimensions: 205mm x 205mm; Weight: 1.60kg - 1.70kg;