Connected to the device, the App is able to provide the following data: - the energy produced by the photovoltaic system - the energy exchanged (introduced / withdrawn) with the grid - electrical consumption and self-consumption index - historical data the measuring device: - it is used for single-phase and three-phase photovoltaic systems - it is universal: it can be applied to any photovoltaic system regardless of the inverter installed and the meters - easy to use and install: it can be a