Futaba Electric Industrial Airplane 1 Axis Gyro

The gyro sensor with excellent vibration properties makes it compatible with large engines.
Use 2 GYA450 and GYA451 or GYA450 to fit V-tails
Combination of GYA450 and GYA451 for elebon compatibility.

This product does not include the battery or power supply.

(From Amazon.co.jp)