Wide voltage means that electrical appliances have strong adaptability to voltage, whether high voltage or low voltage can be adapted, and different levels of voltage can be applied within a certain range. The wide voltage has strong adaptability to voltage fluctuations between 85V and 265V, and can operate normally whether it is the peak of city electricity consumption or the lack of power supply in remote areas. It is suitable for places where the voltage fluctuates and is unstable, and there is no need to add additional transformer and voltage stabilizer equipment.