LED surface-mounted luminaire for single or strip lighting applications. Surface-mounted luminaire for ceiling mounting. With separately ordered installation accessories also suitable for use in panel ceilings (SFlow ZBP L2). For panel ceilings in module 100. With separately ordered accessories also suitable for suspended mounting (ZS1P 2000). Optical system in micro reflector technology (MRW) with highly efficient reflector chambers made of white polished plastic for high lighting comfort and efficiency. With additional clear cover plate integrated in the optical system for flush-fitting on the room side and protection of the LED. Discreet lateral light output over the entire length of the luminaire. With symmetrical, wide beam light distribution. Luminaire luminous flux and light color permanently set. LED system and luminaire optics can be snapped into the luminaire body as an assembly without tools. Assembly secured with a steel cable to prevent falling during assembly. Rated luminous flux 4000 lm, rated power 28 W, maximum luminaire luminous efficacy 143 lm/W. Light color neutral white, correlated color temperature (CCT) 4000 K, general color rendering index (CRI) Ra > 80. Color location tolerance (initial MacAdam) = 3 SDCM. Average rated service life L80(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 silver gray (RAL 9006). Dimensions (L x W): 1413 mm x 84 mm, luminaire height 45 mm. Permissible ambient temperature (ta): -20 °C - +. Protection class (EN 61140): I, protection type (DIN EN 60529): IP20, shock resistance according to IEC 62262: IK03, test temperature glow wire test according to IEC 60695-2-11: 650 °C. Weight: 4.0 kg. Mains connection is made using plug-in terminals. The electrical connection of the components is automatic. With electronic control gear, switchable. The control gear is replaceable in accordance with the ecodesign requirements (VO (EU) 2019/2020). The product meets the basic requirements of the applicable EU directives and the Product Safety Act and bears the CE marking. In addition, the luminaire is ENEC-certified by an independent testing body. Luminaire 10 years, spare parts (LED module, control gear, optical system) 15 years after the invoice date, subject to reasonable changes that serve progress.