About the Tractor Truck Multi-Function Control UnitTamiya 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 functionsBy 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.Light Effects:Head lightFog lampRoof lampTail lightTurn signalsHazard lampSpeed indicatorBack lightAuxiliary lamp Sound Effects:Alarm 1Alarm 2Engine starterIdlingAir dryerRevvingRunning without trailerRunning with trailerCoupler attachmentCoupler detachmentDown-shiftingUp-shiftingAir discharging 1Air discharging 2Exhaust brakeBrakeShort honkContinuous honkTurn signal 1Turn signal 2Hazard lampBack alarmParking brakeEngine stop Special Operation:Engine start/stop switchingHorn/Support leg switchingLight on/off switchingTurn signal/Hazard lamp switchingRunning/Revving switching