The NA5PLUS MGU50400M0 is a digital, programmable, 400g meter panel with an RS485 interface, manufactured by LUMEL. It is designed for monitoring electricity distribution networks, and features a large, easily readable display of current power readings, allowing users to quickly check power levels. The device also offers various user settings, such as data logging, data scaling, and communication functions, allowing users to customise the device to their specific needs. It also features an extensive range of alarm settings, with the capability to generate alarms and output signals based on pre-defined conditions. Additionally, the MGU50400M0 also includes multiple features such as a built-in temperature sensor, a rugged IP65 enclosure, and a galvanically isolated RS485 port.