Rectangular LED ceiling surface-mounted luminaire with light elements made of lens systems and cubic shielding elements with high efficiency. Surface-mounted luminaire for individual or strip light applications. The optical system with a precisely coordinated combination of LED lenses and shielding elements ensures very high visual comfort with very high lighting performance. Wallwasher with asymmetrical light intensity distribution. With HCL equipment for controlling the light color using a separate control unit (DT8). The LED system consists of 25 cubic light elements embedded flush in the luminaire surface. Rated luminous flux 4100 lm, rated power 47 W, maximum luminaire luminous efficacy 89 lm/W. Light color variable (warm white - daylight white), correlated color temperature (CCT) variable (2700 K - 6500 K), general color rendering index (CRI) Ra > 80. Color location tolerance (initial MacAdam) = 3 SDCM. Average rated service life L80(tq 25 °C) = 100,000 h, average rated service life L90(tq 25 °C) = 50,000 h. The light source is replaceable in accordance with the ecodesign requirements (Regulation (EU) 2019/2020). Luminaire body made of sheet steel. Surface coated white (RAL 9016). Anti-dazzle cubes silver-gray, with fine surface structure. Dimensions (L x W): 1509 mm x 170 mm, luminaire height 46 mm. Protection class (EN 61140): I, protection type (DIN EN 60529): IP40, shock resistance level according to IEC 62262: IK03, test temperature glow wire test according to IEC 60695-2-11: 650 °C. Weight: 7.0 kg. With electronic control gear for switching, dimming and controlling the light color using a DALI Device Type 8 capable control device. Control gear in accordance with DALI-2 standard (EN 62386). The control gear is replaceable in accordance with the ecodesign requirements (VO (EU) 2019/2020). Control gear is idle-proof and protected against incorrect connection, short circuit, overload and overtemperature. Output ripple of the control gear = 4% for effective control of the LED system and flicker-free light. The product meets the basic requirements of the applicable EU directives and the Product Safety Act and bears the CE mark. The luminaire is part of a range of recessed, surface-mounted and suspended luminaires that are coordinated in appearance. Project-specific versions with varying luminaire features are available on request. Luminaire 10 years, spare parts (LED module, control gear, optical system) 15 years after the invoice date, subject to reasonable changes that serve progress.