Air Cooled Servo Voltage Stabilizers operate on a closed loop control and work on automatic mode of operation. These Servo Voltage Stabilizers are designed for maintaining the mains voltage constant at all times. These Servo Voltage Stabilizers are designed in such a way that automatically ensures that the mains voltage remains stable even if the incoming mains voltage drift is high or low. Air Cooled Servo Voltage Stabilizers are equipped with microcontroller unit with multi mode monitor.