Residential Smart Meters


Plug-in intelligent meter (eHZ)


This three-phase electricity meter was developed especially for the German market and for use in residential and smaller commercial applications. It`s compactly designed housing made of self-extinguishing polycarbonate accelerates and simplifies utilities’ installation processes. The device offers full protection against physical meter manipulation attempts and unauthorized meter data access. MT691 is in full conformity with FNN MS2020 requirements that define the German smart metering landscape.



  • High accuracy and long-term stability of the measuring system
  • Reliable device with a long life cycle
  • Photovoltaic friendly design
  • Two-line Info display
  • Optical interface