The SGM-D4 smart grid meter is our latest generation of FNN basic meters with three-point mounting. It is a system-ready meter for measuring active power and fulfills the legal requirements of the Measuring Point Operation Act (MsbG) for connection to a smart meter gateway, and can be combined with the SGH-S smart meter gateway to form a smart metering system. The standardized installation space allow installation of the GCU-S control box. Along with integrated grid data acquisition, the SGM-D4 is a perfect solution for use cases with switching and control tasks arising from the digitalization of power grids.