For measurement, storage & supervision of electrical quantities in low voltage power mobility. It is characterised by its integrated harmonic measurement (U/I). The measured values can be put down in the memory (160, 000 values). The device has over a RS-485 interface, , as field bus the Modbus and/or Profibus DP are available. in addition, the device has 2 transistor outputs, which can be used optionally as pulse outputs for active or reactive energy and/or as threshold contacts.