There are two series in home voltage regulator:servo-motor voltage regulator and relay type voltage regulator.
a servo-motor type high accuracy household voltage stabilizer. Low power consumption, reliable work, high accuracy of stabilization,and good for use in regions where the net voltage is much fluctuating.
a Relay-type high accuracy household voltage stabilizer.Good for voltage regulation in wide range. It features small dimension, light weight, small distortion of output wave form, quick reaction. Ideal power source for modern house-hold electrical appliance.
automatic voltage regulator