It uses micro-computer controlled large-scale integrated circuits, greatly improving quality and reliability of the product.Different models of control boxes mean bigger capacity, and more rational configurations.It could be controlled by wind, light, rain, temperature sensors.Multi-functional control can be accessed by sub-control, central control, remote control, and time control, which can meet users’ daily needs for lighting and ventilation. It is linked with automatic controller for fire protection, and treats fire signal first.Unique Production Technology, Innovative Research and Development Concept.