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 canceled, 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 COMMENTS). Digital Servo Compatible (DS Mode) : DS mode makes it compatible with
Futaba digital servos. This maximizes the high-speed response

performance of the digital servo.
Remote Gain Function and Mode Switching Function Remote : Gain function allows sensitivity switching from the transmitter and mode switching function allows AVCS/normal gyro mode switching.
Integrated, compact and lightweight design made possible by high density mounting technology.
Conductive Resin Case : This case improves EMC (Electrostatic and electromagnetic interference) resistance.
Includes:
One GY401
One plastic adjustment screwdriver
Three mounting pads
One S9254 Futaba digital servo
One S9254 servo accessory hardware package
One instruction sheet