A ceiling-recessed office lighting fixture. The modular DARKPOINT optics consisting of a PMMA lens and a black PC reflector provides complete glare protection and shapes the light distribution with precision. The electrical connector on the back of the fixture shortens the assembly time. Tool-free power supply connection and luminaire mounting in modular ceilings. Installation in plasterboard ceilings with a thickness of 12.5 mm to 25 mm is possible with additional adjustable brackets. Luminaire type: Troffers; Mounting type: recessed mounting; Mounting location: ceiling; Luminous flux: 4100lm; Maximum luminous efficacy: 152lm/W; Correlated color temperature: 3000K, 4000K ; Color rendering index (CRI): >80; Median useful life: L70 - 183000 h,L80 - 114000 h,L90 - 54000 h; Standard Deviation of Color Matching (SDCM): SDCM <3; Photobiological risk group: 1; Luminous intensity distribution direction: direct; Energy efficiency class: C; Luminous intensity distribution: wide; Frame color: black, smooth matte, RAL9005; white, smooth matte, RAL9016; Luminous intensity distribution geometry: symmetrical; Unified glare rating (UGR): 14; Angle 65° luminance: 500; Voltage: 230V AC; Power: 27W; Wired lighting control: ON/OFF, DALI; Wireless lighting control: ZigBee; IP Code: IP20; IEC protection class: I; Reflector material: PC; Reflector surface: black; Lens material: PMMA; Lens construction: single lens; Housing material: steel sheet; Luminaire shape: square; Permissible ambient temperature range: from 0°C to 25°C; Connector type: 3-pole, 5-pole; Dimensions: Height: 47mm, Width: 597mm, 622mm, Length: 597mm, 622mm, ; Sensor: PIR, wireless; Weight: 5.00kg - 5.50kg;