The fischertechnik lead is a 1-wire cable for connecting motors, LEDs, etc. to the power supply and for connecting sensors and actuators to the controller. The fischertechnik 1-wire lead is available in different lengths. It is used, for instance, in the Professional Electronics construction set.; fischertechnik offers a wide selection of high-quality spare parts that are ideal for building your own models or as additions to existing kits. Whether gears, motors, sensors or connecting elements - the precisely manufactured components make it possible to realise creative projects and master technical challenges. Thanks to the compatibility of all fischertechnik parts, complex constructions can be easily expanded and customised. This means that both beginners and experienced inventors can realise their own ideas and discover the world of technology in a fun way.