220V 50/60Hz Single Phase AC Motor Speed Controller Electric Motor Speed
(Speed range: 90-1400r/min 50HZ, 90-1700r/min 60HZ. Relative humidity: <90%. 4" Gross Polish Polishing Buffer Pad Sponge Kit Set Drill Adapter Car Polisher. 1) Select COM and CW short circuit, then the motor rotates clockwise;.