If you would like to see real-time generation from your solar/wind system displayed on the LCD display of your product. You’ll need an additional CT. (additional option)
eddi is a solar power diverter for use with grid-tied PV or wind turbine systems. Excess energy from the micro-generation system is used to heat water or rooms rather than exporting it to the grid.
No power source is needed for harvi – the energy from the CT is harvested and used to transmit the measurement signal to the zappi or eddi.