According to Shun Kai's inquiry. The input of Sander regulator can be directly plugged into 220V power supply. Grinding machine voltage regulator is a kind of power supply equipment, which can stabilize the input voltage within a set range, thus providing a stable power supply for the equipment. It is suitable for many different voltage ranges, including 220 V. Before connecting the Sandro regulator, make sure to turn off the power supply and connect the circuit correctly according to the instructions. In addition, pay attention to the specifications and load capacity of the power cord to ensure safe use.