Device carrier made of galvanized, profiled steel sheet with a surface coated with polyester resin. Tool-free attachment with integrated side lever locks for quick insertion into the mounting rail. LED unit in housing length for visually continuous light strip, positionable variably in the mounting rail. Diffuser optics with direct/indirect light distribution, deep/wide beam, using a satin-finished PMMA plastic diffuser that features an internal longitudinal prism. The lightly satin-finished diffuser creates a uniform, homogeneous appearance with ceiling illumination. UGR (4H/8H) 21.9. Equipped with an emergency light battery for 3 hours and an integrated status indicator, with three-hour emergency operation. Electrical connection is made via a 1 m connection cable for variable device carrier positioning in the light strip, featuring a 5-pole quick-mount plug with free phase selection.