Power meter/ energy monitor/ electricity usage monitor analyzer.
Power meter for measuring wattage, voltage, freqency, current, kwh, power factor. E.T.C. It has storage capacity to store data and has backup battery. It also has date and time.
all electrical engineers, solar and inverter installer and users, electrician, technician ane everone using electriciry must have it and most importantlt, every inverter and solar installars and users.
Daystol power services ltd