ZMR NX4 PRO EVO Flight Controller 3D Flight Gyroscope Balance For Fixed-wing Aircraft Support Rate/Hold/Gyro Off Mode NX4 EVO Flight Controller: Voltage scope: DC 4.5 6V Response Frequency: 100Hz Operating Temperature: 0-50C Dimension: 43 x 28 x 15mm Weight: 11g Features: Provides four levels of flight modes: 1- Beginner; 2 - Practice; 3 - Intermediate; 4 - Expert. Four Model Types Support : singal aileron,dual ailerons,triangle and V-tail. Two kinds of Gain Control Method supported:Control Gain from the radio,Independent Axis-Gain from the Variable resistor on the Controller board. Emergency mode guarantee safety flight. Automatic aileron leveling. 3D AVCS flight,Attitude locking. Provide Y-wiring for aileron. NX4 PRO Flight Controller: Voltage scope: DC 5 6V Dimension: 40mmx25mm Weight: 6.5g Features: Four Model Types Support : singal aileron,dual ailerons,flapperons,deita and V-tail. Three Flight Modes supported: a.Rate Mode,Rate Mode for offset correction. b.Hold Mode,HOLD mode for attitude hold. c.Gyro-Off Mode,transsmiter control the plane directly. Two kinds of Gain Control Method supported:Control Gain from the radio,Independent Axis-Gain from the Variable resistor on the Controller board. Using superior algorithm,Bring a more comfortable and more sensitive sense of control. _x000D_