NX3evo provides four levels of flight modes: 1st, Beginner; 2nd.Practice; 3rd.Promotion; 4th.Expert. Four wing types: Single (Dual ailerons)/Delta wing/V-tail. Separate gain adjustment for each axis Single/Separate Dual ailerons recognition capability. Remote master gain adjustment during flight. Including emergency mode, One-key auto safety. Automatic stick centering Automatic level offset, self-balance. 3D AVCS flight, Attitude locking. Provide Y-wiring for aileron. Wide available airplanes, offer refinning operation feel Support normal fixed-wing copter, V-tail, triangle-wing Smart level callibration Independant potentiometer adjust axis sensitivity Auto distinguish normal single flybar and dual flybar mode Auto balance flight One button save function Attitude locking mode Specifications: Voltage range: DC 4.5 - 6V Response Frequency: 100Hz Operating Temperature: 0-50°C Dimension: 43x28x15mm Weight: 11g Packing List: NX3evo Flight Controller Board