... Acceleration SensorDescription:- 100% brand new free flight controller, four axis Free Flight FF Auto Balance Controller,it can be used without debugging.- Support ... 4,Heading Direction 5,Remote control calibration( Switch channel) 6,PTZ pitch angle 7, PTZ pitch angle trimming(ratio CH ... motor input 5, No.3 motor input 6,No.4 motor input Dual axis PTZ:- It maintains verticality mode under 6CH ...