Electricity Saving BoxElectricity Saving Device Save ElectricityEsaver Watt Energy Saving DeviceUs Plug 90v-250v 30kw 4Pack

1. Voltage and current stabilization: This type of Energy saving devices can quickly stabilize the voltage and balance the current to reduce the line loss thus saving electricity expenses. 2. Efficient power supply: The energy saver can also improve the efficiency of the power supply avoiding the ineffective waste of electricity and thus prolonging the service life of household appliances. 3. Overheating protection: After plugging the energy saver into the socket the indicator light will work. When the working temperature exceeds the safe temperature the economizer will stop working automatically; when the temperature is lower than the safe temperature the professional power-saving box will start working automatically.