Produal Proxima CU is a multifunctional control unit designed especially for room and zone control applications. The control unit supports the following communication protocols: Modbus RTU, Modbus TCP, BACnet MS/TP and BACnet IP. Two rooms can be controlled with one control unit by connecting two room units. Configuration of the Produal Proxima CU is done with Produal MyTool Android application. Up to two Produal Proxima room units can be connected at the same time to the controller, to support up to two rooms from the same controller.