Hobbywing HW30201500 - FlyFun HV0A OPTO V5 Airplane ESCDEO Technology / Active FreewheelingThe DEO technology (Driving Efficiency Optimization) implemented in the ESC has multiple advantages:Rapider and smoother throttle response, better stability and flexibility during flight.Higher driving efficiency, longer flight time.Lower ESC temperature, more reliable operation.Soft Start-ups & Reverse BrakeNew soft start-up modes are applicable to regular propeller aircraft and EDF aircraft with different sizes. With Reverse Brake mode enabled when landing can effectively shorten the sliding distance of the aircraft to simulate the landing of a real aircraft (within a super short distance, the FLYFUN0A/160A-HV-OPTO-V5 doesnt have this function). Normal Brake Mode, Proportional Brake mode, and Brake Disabled mode are also available; the brake amount is adjustable in normal brake mode while in proportional brake mode, the brake force will be automatically allotted on the basis of the position of