The wiring methods of electric HIVAL valves are classified according to different use requirements and different on-site working conditions, and the wiring methods of electric actuators with different functions are also different. Users should have some knowledge about wiring to avoid unnecessary failures, which may lead to short-circuit failure of the entire circuit on the one hand; accident. Electric valve actuators can generally be divided into AC (AC110V, AC220V, AC380V,) and DC (DC24V, DC12V) according to the power supply voltage, and can be divided into active switch type, passive switch type, potentiometer type, explosion-proof type, adjustment type, etc.