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 twenty total LEDs of nine different types: headlights, brake lights, and turn signal operation are also available at your fingertips. It features a built-in electronic speed controller function to allow smooth rides at speeds ranging from very low to standard. This system, when mounted on the truck is located inside the cabin with speaker to the front and the MFC-01 unit to the rear. The control unit is mounted inside the left tool box for easy access.