WMV Single Phase Wall Mounted Voltage Stabilizer consists of auto-transformer, CPU, intelligent control circuit, overload protection circuit, under and over voltage protection circuit, time delay output circuit, LED display and servo motor. When input voltage or load changes, intelligent control circuit will drive servo motor to adjust brush to regulate the output voltage to the rated value. LED display indicates outside network voltage, electric appliance voltage and load usage in real time. Thus the electrical appliances can be used more safely. The product is featured by its elegant, easy installation with wall mounted and vertical two types, no output waveform distortion, full protections and reliable performance. It is ideal equipment for constant voltage power supply used in household appliances, industrial producing, laboratory and medical hygiene.