The KST A12-T servo uses a magnetic (Hall effect) sensor to provide position feedback, replacing the troublesome sliding contact potentiometer used in most servos. This improves the reliability of the servo enormously, while also providing better accuracy and resolution. The A12-T also benefits from an ultra-efficient coreless motor, a steel gear train, an aluminium case, a slow start, low current consumption, and constant power output. These make it perfect for high-performance gliders, larger electric models and jets.