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Building management system controlling HVAC based on received HVAC, door, lighting, and occupancy states

Image Number 5 for United States Patent #7925383.

A building management system controls an operation of a system related to state information provided from multiple systems within the building management system among the multiple systems. Because the building management system is operated to control the multiple systems in an interworking manner, the operation efficiency of the building management system can be improved.

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