Speed-Controlled Servo Motor Control Kit with High-Power Brushless Motor. Model: Brushless Servo Motor Control System Kit. Motor Pole Pairs: 8 pole pairs. Motor Type: Permanent Magnet Brushless Servo Energy-Saving Motor. Speed Range: 250 to 6500 RPM. Control Methods: Rotary knob speed adjustment, push-button start, and other options available. Protection Features: Overcurrent, overvoltage/undervoltage, short-circuit protection, stall protection.