Network bridge between the Ethernet network and the RS485 line for communication and data-logging of Electrex devices. FSTN graphic display. Astronomical and perpetual clock/calendar, battery powered and non-volatile, industrial type memory. Remote firmware update. Already activated one Log 8 logging service (log of self internal inputs and other 7 Electrex instruments connected in a sub-network, power / energy and relative digital inputs). FTP Server. 2 digital inputs and 2 digital outputs. ExpBus, high speed communication, port for external devices (inputs and outputs modules, and environmental sensors). NFC technology. Size of 6 DIN modules. Power supply 18÷60VDC.