The EWIO, 2-M-BM is a powerful data logger for monitoring energy consumption and energy management in buildings, machinery, plants, and systems. It features two Ethernet ports with Daisy Chain functionality for linking additional data loggers and connecting to a LAN network. The EWIO2-M-BM can be integrated into a Modbus TCP or BACnet/IP network for control tasks. The parameterization, configuration, and commissioning of the system are carried out via a platform-independent web browser. The M-Bus and Modbus RTU interfaces allow for reading various meters, such as electricity, water, gas, and heat. Measurement values can be sent via email (SSL) and FTP (SFTP) from the database, or read out via FTP (SFTP), a BACnet, or Modbus control. The integrated graphical programming interface Node-RED in the web interface, along with numerous digital and analog I/Os, enables the creation and visualization of simple functions and control tasks in building or industrial automation. An integrated µSD memory card expands the functionality of the EWIO2-M-BM for storing settings, data, and applications.