SincereetaliThis engine speed controller uses premium electronic circuit and integrated component for optimum durability. Small size, high precision, stepless speed regulation and long service life. It is easy to use and can be used in conjunction with domestically produced single-phase asynchronous motors to achieve constant feedback speed and stepless speed regulation. You can try. Features: The controller uses fine quality electronic circuit and integrated component for durability. It has small size, high precision, wide speed control range and long service life. It is easy to use and can be used in conjunction with domestically produced single-phase asynchronous motors to achieve constant feedback speed and stepless speed regulation. The speed regulation range is 90-1400r/min 50HZ or 90-1700r/min 60HZ (according to your selection). The high power of 400W can provide stable performance. La puissance leve de 400 W peut fournir des performances stables. Anti-slip rotation button design for easy adjustment of working speed. One button to turn on/off the motor, and please disconnect the power supply when it is necessary to stop the operation for a long time. Suitable for packaging, printing, food, electronics, instrumentation, equipment, clothing industry production line for speed control drive devices. Specifications: Name: Speed Controller Motor Type: AC Motor Rated Power: 400W Application: Motor Speed Regulator Power Supply: AC220V, 50/60Hz Environment Temperature: -10 to 50 Speed Regulation Range: 90-1400r/min 50HZ, 90-1700r/min 60HZ (According to your selection) Item Size: 113 * 100 * 60mm / 4.45 * 3.94 * 2.36in Item Weight:?252?g / 8.89ounce Package Size: 120 * 105 * 83mm / 4.72 * 4.13 * 3.27in Package Weight: 284g / 10.02ounce Packing List: 1 * Speed Controller speed