This is the Futaba S3150 Slim Digital Aileron Servo with J Connector.
Designed for aileron applications on gliders, jets, and electric planes.

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 about half the response time
from transmitter input to servo reaction
Dust and water resistant-not water proof
Compact design is especially suited for easy installation inside
the wing of smaller gliders, jets and electric planes.
Black plastic case
One year warranty

INCLUDES: One S3150 Digital Slim Digital Servo, one 1" (26mm) star shaped
horn, one 1.5mm (39mm) star shaped horn, one 1.8" (45mm) straight
arm, one 1.4" (35mm) diameter horn, two each-screws, eyelets, and
grommets

SPECS: Speed: 0.25 sec/60 deg @ 4.8V
Torque: 51.4 oz/in @ 4.8V
Dimensions: 1.1x0.5x0.8 in (28x13x19.7mm)
Weight: 0.78 oz (22g)
Power Supply: 4.8V (Futaba does NOT recommend using 6V)

COMMENTS: S3150 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.

A note on coreless motors. A conventional servo motor has a steel
core armature wrapped with wire that spins inside the magnets. In
a coreless design, the armature uses a thin wire mesh that forms a
cup that spins around the outside of the magnet eliminating the
heavy steel core. This design results in smoother operation and
faster response time.

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 *****