Tamiya RC 1/14 US Tractor truck Multi Function ControlRealistic Lights, Sounds, and Vibration Multi Function Control Unit (MFC 01) offers lights, sounds, and vibration in combination with R C truck action, for a truly engrossing R C experience. Engine sounds have been digitally recorded from an actual truck, and together with air horn, gear shifting, and many other realistic sounds, let you feel like you are driving the real thing. The unit is compatible with up to 20 total LEDs of 9 different types: