The LanStar II-PRO (tm) is a programmable DDC that enables supervisory control of up to 32 microstars, and uses standards such as Ethernet, OPC, and Modbus(tm). Programming is accomplished via the company's ViewPort Client utility. Features include an optional Modbus serial port that allows the unit to supervise and control third party devices such as VSDs, chillers, kWh meters, or any other Modbus compatible equipment.