Slot.it SP43 - Digital Chip for Carrera DigitalNew from Slot. it use to convert analog cars to Carrera Digital. Smaller chip size (25x15mm) Comes with standard Slot. it connectors and Scalextric socket External infrared LED on wires may be used (available separately) This chip can be fitted directly to Scalextric cars with DPR wiring. For non DPR Scalextric cars and all other brands of analog slot cars, use in conjunction with the SP45 Motor Cable with Connectors.