There are two types of electric screwdrivers on the market according to different driving voltages, one is a direct plug electric screwdriver, and the other is a frequency conversion electric screwdriver.
The driving voltage of the in-line electric screwdriver is AC 220V. The advantage is that it is convenient, not cumbersome, and the disadvantage is that it is not accurate enough, prone to problems, high risk, and short life.
The driving voltage of the variable frequency electric screwdriver is DC 30V. Through the inverter voltage control, the AC can be converted to DC. The advantages are accuracy, not easy to cause problems, zero risk, and long service life. The disadvantage is that it is more cumbersome and generally more suitable for factories.