M-Bus / WLAN


The EWIO2-MW 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 for the chain further Data logger and a WLAN interface are available for the connection to the LAN or WLAN network. In addition, the WLAN interface can be used as an access point for the configuration with a mobile device (e.g. smartphone, tablet, notebook). 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). The integrated digital and analog I/Os allow to realize different tasks in the building or industrial automation via the web interface. An integrated µSD memory card expands the range of functions of the EWIO2-MW for save settings, data and applications.

Technical Data
General Data
24 V DC +/- 10%
550 mA
-5 °C to +55 °C
2 x RJ45 LAN 10/100BaseT, (Daisy Chain) WLAN, b/g/n, 2,4 GHz
NXP i.MX7D Dual Core, ARM-A7, 1 GHz, RAM 512 MB / Flash, max. 32 GB / ext. 2 GB µSD
Linux embedded
Extension bus, max. 6 MR-I/O bus modules, Modbus RTU, max. 32 participants, M-Bus (DIN EN 13757-T1,2,3), max. 80 M-Bus charges
8 x digital inputs, 3 x analog universal inputs, 8 x digital outputs, 3 x analog outputs
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