This is the Futaba S9150 Digital Aileron Servo with J Connector.
Designed for aileron applications on model aircraft.

This servo can produce high-current draw from your batteries.
If using NiMH or Li-Po batteries, make sure they are capable
of delivering sufficient Amps.

FEATURES: Coreless motor
2 ball bearings
Digitally enhanced microprocessors cut in half the response time
from transmitter input to servo reaction
Dust and water resistant-not water proof
Low profile aero design is especially suited for wing installations
Black plastic case
One year warranty

INCLUDES: One S9150 Digital aileron servo 1-3/4" (44mm) diameter servo wheel,
1-1/4" (32mm) diameter servo wheel, one six point servo wheel,
four brass grommets, four mounting screws and two rubber mounts.

SPECS: Speed: 0.18 sec/60 deg @ 4.8V
Torque: 81 oz/in @ 4.8V (5.8 kg/cm @ 4.8V)
Length: 1.9" (48mm)
Width: 1.1" (28mm)
Height: 1.0" (25)
Weigth: 1.9 oz (53g)
Power Supply: 4.8V (Futaba does NOT recommend using 6V)

COMMENTS: S9150 Digital Servo Precautions,
-It is best to avoid long leads and Y-harnesses especially with
standard grade wires. If problems are encountered, consider using
heavy duty wire such as Futaba's Heavy Duty Series or Hobbico's
Pro Series,minimizing lead lengths, and/or removing Y-harnesses.
-Current Drain: This digital servo is specially designed for high-
torque or high-speed, therefore very high current drain is normal
at startup. For ultimate performance when using this servo please
review the following points.
1. Radio systems with the Battery Fail Safe function have a
higher cut-off voltage setting which will cause shorter
operation time.
2. When installing the servo, please check pushrod linkage to
make sure there is no binding in order to prevent excessive
power consumption and decrease the life of the motor and
battery.

This digital servo cannot be used with the following * AM *
transmitters as the servo neutral signal is: 1310us).
CONQUEST AM, FG Series (T4FG, T5FGK,T6FG, T6FGK, T7FGK), New Terra-
top, T3EGX, T3PGE, T2NL, T2LGX, T2FR, T2PK series.

**** Otherwise they will work fine with current AM systems *****

** no other arms will work on this, has a unique spline size.