Abstract: The device overcomes the inability of a single HVAC system, when the entire building (or upon each HVAC system which is serving the building) to create optimal occupant comfort, realize potential energy savings, adjust for times of occupancy, and overcome internally and externally imposed changes to comfort when controlled by a single temperature control device. The invention allows the occupant(s) to employ multiple temperature control devices, which results in meeting the requirements for occupant comfort, energy savings, and adjust for times of occupancy.