Features: · Three-phase motor with six levels, large starting torque, stable operation; · Multi-pole permanent magnetic rotor, large flow, low noise; · Controlled by a single-chip computer, with protection against abnormal current and voltage, and overheating and retention protection function; · Fast automatic frequency conversion technology, high efficiency and energy saving; · Suitable for use in fresh and seawater. · The motor is completely sealed, with no exposed copper element; · Corrosion-resistant ceramic shaft and alloy are used, corrosion-resistant and long service life.