The EWIO2-M is a powerful data logger for the energy consumption monitoring and energy monitoring in buildings, on machines, plants and systems. Two Ethernet ports with a Daisy Chain function are available for the chain further Data logger and connection to the LAN network. The system is parameterised, configured and commissioned through a platform-independent web browser. The M-Bus and Modbus RTU interfaces enable to read different meters: e.g. electricity, water, gas and heat. Optionally, the measured values can either be sent from the data base (push) or read out (pull) via mail (SSL) or FTP (SFTP). Simple functions and control tasks in building or industrial automation can be realized via the webinterface with the integrated digital and analog I/Os. An integrated µSD memory card expands the range of functions of the EWIO2-M for save settings, data and applications.