The fischertechnik LED Set from the Plus line adds vibrant color effects to your constructions. With a total of 40 components, the set includes two white LEDs and two rainbow LEDs that flash in different colors and frequencies. The red battery holder included in the set ensures a reliable power supply for the lighting components. This expansion set is ideal for individually illuminating and technically upgrading existing fischertechnik models. It provides an easy way to complement creative building projects with targeted lighting accents.