The UMD 701 is a compact power quality meter with data logger for DIN rail mounting. It measures 8-channel AC / DC currents and voltages and work in class 0.2s, as well as the harmonics up to the 50th harmonic. It maps the power quality according to ISO 50160, IEC 61000-4-30 and EN 61557-12. The UMD 701 has a large 512MB memory. The device can be accessed via the Ethernet interface and live measured values can be viewed via the web browser via the web server. Internet protocols can therefore also be read in and PLC systems and building management systems can be connected easily. Digital inputs / outputs and a serial RS485 interface are integrated. The measurement takes place via JS current transformer (100mA).