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Every electricity producer with an installed capacity of more than 100 kW must be equipped with a device enabling dispatch control. Bridge-104 is a RTU unit by UNIMA-KS used to control the power of the source by the distribution network using the GSM / GPRS network and sending basic information about the source (active power, reactive power, voltage, currents, temperature, wind speed, exposure, etc.) back to the distribution network dispatching. This unit is designed for cooperation with UNIMA-KS devices (control systems, network protections, etc.) from which it reads the necessary information via the RS-485 communication interface (it is therefore not necessary to install additional power measurements) and through which it also writes to the control system a maximum permitted active power or required power factor. In the case of cooperation with UNIMA-KS devices, it is de facto only a configurable RS-485 converter to the IEC 60870-5-104 communication protocol. In case of connection to other devices, the information that must be sent to the control room can be brought to the Bridge-104 using current signals 0-20mA.