About the Tractor Truck Multi-Function Control Unit Tamiya presents incredible sound and action options for any 1/14 scale R/C Tractor Truck with the all R/C Tractor Truck Multi-Function Control Unit. 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. A 4-channel R/C system activates all functions By using your transmitter sticks and the trims you can control the truck movements (forward/backward running and turns), horn, motorized support legs (Item #56505) (sold separately), headlights, position lamps, roof lamps and speed indicators. You can also activate the back lamp, tail lamps and blinkers/hazard lamps as well as engine revving. 20 LED for 9 light functions All lamps employed with the multi function unit are high brightness type LED. They are employed to reproduce headlights, position lamps, roof lamps, speed indicators, fog lamps, back lamp, tail lamps and blinkers/hazard lamps, which can be turned on/off with the transmitter. White LED Headlights, Fog lamps, Position lamps, and Back lamp Orange LED Roof lamps, Blinkers, Hazard lamps, and Speed indicators Red LED Tail lamps 24 Radio-Controlled Sound Effects The multi function unit offers 24 radio-controlled sounds that have been digitally recorded from an actual tractor truck. The R/C Tractor Truck Multi-Function Control Unit is capable of the following functions: Engine Engine starter, Idling, Revving, Running with semi-trailer, Running without semi-trailer, and Engine stop Air Air dryer, Up-shifting, Down-shifting, Air discharging 1, Air discharging 2, Short horn, Continuous horn, and Parking brake Electric Sounds Alarm 1, Alarm 2, Turn signal 1, Turn signal 2, Hazard, and Back alarm Exhaust brake Exhaust brake Brakes Brakes Coupler Coupler attachment, Coupler detachment