This is a High Torque, Arm-Type Sail Servo with a Metal Output Gear for Sailboat Applications.
This S3802 is the replacement for the S125 servo.
This servo can produce high-current draw from your batteries.
Make to use batteries that are capable of delivering sufficient amps.
Metal gears with a special interference-eliminating lubricant to handle high torque applications. 3-pole motor Two ball bearings Plastic sail arm included (FSH25H), plus 22mm Round Horn Rubber gaskets make it water and dust resistant.
Has an arc of 60°, it is capable of 140° with a computer radio that has adjustable ATV