This is the Tamiya "Euro-Style" MFC-03Tractor Truck Multi-Function Control Unit.FEATURESDesigned for the Tamiya 1/14 scale tractor truck series and theMercedes Benz 1850L #5630733 different sound effects with sounds recorded from an L6 enginepopular in Europe including preheating, starting, idling,upshifting, downshifting, brake, and much moreAir sounds synchronized with model actions, plus shift change,coupler connection/disconnection, and two different horn noises16 light effects-LEDs replicate High Intensity Discharge (HID) lights21 operations including steering, turn signals, support leg/hornswitching, clutch, throttle, trailer detachment and moreVibration device vibrates body according to throttle operation3 operation modes;Multi Mode, Running mode with sound, light and vibration effectsDemo Mode, Display mode with lights onR/C Mode: Normal driving with sound & light effects offUnit also functions as a speed control that enable smooth running athigh as well as very low speedsINCLUDESMFC-03 Control Unit, Vibration Unit, Coupler Unit, Control Unit,Speaker, LED Lights, Connectors, Mounting Hardware and InstructionsREQUIREMENTS4-channel ground transmitter (self neutral stick type with 4-chsliding trims) with 4-ch receiver Two servos (three if using (0655) Motorized Support Legs