Device carrier made of galvanized, profiled sheet steel, surface coated with polyester resin. Tool-free fastening with two integrated twist locks. LED unit made of extruded aluminum profile, naturally anodized with plastic end faces. Can be variably positioned in the support rail. Direct, unshielded light distribution, LED diffuser cover made of polycarbonate, heat-resistant cables including 1m connecting cable and quick-assembly plug part with tool-free phase preselection and search finger.