Surface-mounted LED luminaires for ceiling and wall mounting. With opal PMMA diffuser, finely structured. With Lambertian light distribution. Glare evaluation according to UGR rating (EN 12464-1) < 25. Secure fixing of diffuser with inner spring-tensioned contact clips. Luminaire luminous flux and light color fixed. Luminaire luminous flux 3400 lm, connected load 25 W, maximum luminous efficiency of luminaire 136 lm/W. Light colour neutral white, correlated colour temperature (CCT) 4000 K, general colour rendering index (CRI) Ra > 80. Colour locus tolerance (initial MacAdam) ≤ 3 SDCM. Mean rated service life L80(tq 25 °C) = 35,000 h, mean rated service life L70(tq 25 °C) = 50,000 h. The light source is replaceable according to the ecodesign requirements (VO (EU) 2019/2020). Luminaire body sheet steel. Surface coated white (RAL 9016). End caps of impact-resistant ABS. With integral cable channel on rear for cable routing with offset wall outlets. Side cable entry is in end cap. Dimensions (L x W) 1534 mm x 111 mm, luminaire height 101 mm. Permissible ambient temperature (ta): -20 °C - +. Safety class (EN 61140): I, protection rating (DIN EN 60529): IP40, impact resistance level in accordance with IEC 62262: IK02, testing temperature of wire glow test in accordance with IEC 60695-2-11: 650 °C. Weight: 4,4 kg. With electronic transformer, digitally dimmable (DALI). Control gear unit according to DALI-2 standard (EN 62386). Luminaire is switchable and dimmable by means of touch functionality via DALI control terminals (Touch DIM). The control gear unit is replaceable in accordance with the ecodesign requirements (VO (EU) 2019/2020). The luminaire complies with the fundamental requirements of applicable EU regulations and product safety legislation and bears the CE symbol. The luminaire is also ENEC-certified by an independent testing authority.