... voltage stabilizer adopt relay switch-over to adjust the output voltage,possessing the protection against tiomdelay,over voltage and under ... ,wide input voltage range,etc.The voltage stabilizers are the universal protectors in the high-grade household appliances,such ... voltage120-270Voutput voltage 220V±10%Frequency50-60HZVoltage regulating speed >7.5V/secVoltage for over voltage Protection 246 ...