Big fuel / diesel sound module with horn \n \nSelectable petrol engine or diesel noise with adjustable sound warning for your electric vehicle, truck or boat. The idle regime and the maximum diet are adjustable. Delivered assembled with high - speaker 100 mm in diameter. Compact design, synchronized with the engine speed. Perfect for cars, trucks, crawlers and fast or slow boats. \n \nThese sound modules use the highest quality analog analog technology. This has the advantage compared to digital noises to have a more realistic and perfectly adjustable sound to your model. \n \n Note: works only with classic \"brushed\" engines (Brushed). \n \n Technical characteristics: \n