The Automatic Voltage Regulator (AVR) is an electronic system that maintains a stable output voltage of the generator regardless of load fluctuations or engine speed. This protects sensitive electronic equipment (e.g. computers, meters, chargers) from damage caused by voltage spikes or fluctuations. The AVR ensures a steady and safe power supply, which is especially important when using an electric power supply in the home or office. This feature is now standard on higher quality models.