Feature: The speed control range of motor governor is 90-1400r or min and 90-1700r or min respectively at 50 or 60Hz. The controller is manufactured with high quality electronic components, and its performance is stable and reliable. The control precision is high and the micro-control of motor speed is realized. The operation of the product is simple, which enables novices to learn and master the operation method quickly. Widely used in packaging, printing, food, electronics, instrumentation, medical equipment, clothing industry production line as speed drive device. Specification: Product model: US-52-RED Matching motor power: 300W 400W 500W (Optional) Working power supply: AC220V 50 or 60HZ (Voltage fluctuation range 10 percent Ue) Use environment: -10-and50 Relative humidity: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store