Futaba GY401 Gyro w/S9254 Digital Servo

This is the Futaba GY401 Gyro with an S9254 Digital Servo. / This is a high performance, compact and lightweight / (AVCS) Angular Vector Control System gyro developed for model helicopters. / Because the sensor and control circuit are integrated, it is simple to install. / / FEATURES: AVCS System: Since the rudder trim changes (caused by wind and other / meteorological changes) the front, rear, and other heli attitudes / change and are automatically cancelled; tail (rudder) operation is / easy, making it perfect for 3D flight. / (also known as heading hold gyro) / SMM Gyro Sensor: Use of this newly developed technology virtually / eliminates rudder trim changes during flight (see