The EWIO, 2-MW-BM is a powerful data logger for energy consumption monitoring and energy monitoring in buildings, machines, plants and systems. Two Ethernet ports with daisy chain function for linking additional data loggers and a WLAN interface are available for connection to a LAN or WLAN network. In addition, the WLAN interface can be used as an access point for configuration with a mobile device (e.g. smartphone, tablet, notebook). The EWIO2-MW-BM can be integrated into a Modbus TCP or BACnet/IP network for control tasks. The system is parameterized, configured and commissioned using a platform-independent web browser. The M-Bus and Modbus RTU interface allows different meters to be read: e.g. electricity, water, gas and heat. The measured values can be sent either in parallel or by email (SSL) and FTP (SFTP) from the database (push) or read out via FTP (SFTP), a BACnet or Modbus controller (pull). Simple functions and control tasks in building or industrial automation can be created and visualized using the 'Node-RED' graphical programming interface integrated in the web interface and the numerous digital and analog I/Os. An integrated µSD memory card extends the range of functions of the EWIO2-MW-BM for storing settings, data and applications.