AVR(Automatic Voltage Regulator)
An Automatic Voltage Regulator (AVR) is a device that maintains a constant voltage level to electrical equipment, protecting it from damaging fluctuations in the power supply
The basic function of a UPS is to act as a buffer between your devices and the power grid. It contains a battery and an inverter.
A smart energy meter is a modern electronic device that accurately measures electricity consumption in real-time.