We produce seven models for liquid level control, pressure control, temperature control, time control, air conditioning joint control, submersible sewage pump and fire control. They all have the protection system against the short circuit, phase loss, overload, overcurrent in major loop. The leakage of pump body and overtemperature of stator winding can be avoided by protection functions as well. In addition, every model is divided into single control type and active-standby mutual control type. All of the active-standby mutual control types can automatically switch from active pump to standby pump in case of breakdown, and give an alarm when the water level exceeds limits. This cabinet is widely used in agricultural production, municipal engineering, water supply for high-rise building, drainage, fire protection, spraying, automatic control of booster pump, and other occasions. It is also suitable for the control of other AC motors. The product can be customized according to your design requirements and field conditions.