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 othermeteorological changes) the front, rear, and other heli attitudeschange and are automatically cancelled; tail (rudder) operation iseasy, making it perfect for 3D flight.(also known as heading hold gyro)
• SMM Gyro Sensor: Use of this newly developed technology virtuallyeliminates rudder trim changes during flight (see Comments).
• Digital Servo Compatible (DS Mode): DS mode makes it compatible withFutaba digital servos. This maximizes the high-speed responseperformance of the digital servo.
• Included high-speed S9254 digital servo boasts 47 oz-in torque and aspeed of .06 seconds @ 60°
• Remote Gain Function and Mode Switching Function Remote: Gainfunction allows sensitivity switching from the transmitter and modeswitching function allows AVCS/normal gyro mode switching.
• Integrated, compact and lightweight design made possible by highdensity mounting technology.
• Conductive Resin Case: This case improves EMC (Electrostatic andelectromagnetic interference) resistance.
• One year warranty

Includes:

• One GY401 gyro
• One S9254 digital servo, available separately FUTM0224
• One 0.81" (20.5mm) round servo horn, one 1.8" (45mm) round servo horn,one 1.25" (32mm) 6 point servo horn, one 1.5" (39mm) 4 point horn, andmounting hardware
• One mini plastic adjustment screwdriver
• Three mounting pads
• One instruction sheet

Specifications:

• GY401 Gyro with S9254 Digital Servo
• Length: 1.1" (27mm) 1.6" (40mm)
• Width: 1.1" (27mm) 0.79" (20mm)
• Height: 0.79" (20mm) 1.4" (36.2mm) not including horn
• Weight: 0.95oz (27g) 1.8oz (50g)
• Torque: 47 oz-in
• Speed: .06 sec @60°

Comments:

• Can be used in helicopters and airplanes (Due to 0-100% Gain Adjust).
• The new SMM (Silicone Micro Machine) technology is the integrationof mechanical elements, sensors, actuators and electronics allbrought together on a common substrate chip. This hobby industry first, results in a gyro sensor with an unprecedented level of functionality, reliability, and sophistication.
• This will not work with JR digital servos. These have a different pulse.
• Voltage- use only with a 4.8V battery. (if you use it with a higher voltage battery it needs to be regulated to 6.0V)