... PWM output- Adopts three axis digital gyroscope and three axis digital accerleration sensor.- Auto-balance,quadcopter X or+mode ... calibration( Switch channel) 6,PTZ pitch angle 7, PTZ pitch angle trimming(ratio CH input)- Output CH(PWN ... ): 1, PTZ Pitch angle servo 2, PTZ roll servo, 3, No.1 ... It can be trimming by button 7 to adjust angle.Shaft distance: 17.7in/450mm - Net weight: ...