Transmitter functions:SteeringMonitor, Trim, Travel, BalanceL/R, Speed, Curve, Sub-Trim, ReverseThrottleMonitor, Trim, Hi-Point, Brake, Speed, Curve(front), Curve(Brake), Sub-Trim, Revers, A.B.SOther3ch-Setting, Model Name, ModelSelect(7models), Model-Copy, Model-Reset, ADJ-Volume Inclusive KR-210S (2channel reciever).Required Items:(8) AA size Batteries