This is a electronic speed controller brushless motor. The mystery brushless motor has high rate PWM. Small brushless motor has Low resistance. User programmable brake - Low voltage auto setting based on battery Throttle range self-adjusting - Soft start ramp up - Runs motor in forward or reverse - Auto motor cutoff with reset Safe power arming program ensures motor will not run accidentally after turn on - Low torque start Auto shut down when signal is lost. With the knowledge and experience of our engineers, first class production methods, advanced management and quality's control, we produce high quality and reliable small brushless motor. Don't miss it!