Wiring Method: 1. Direct control mode: Wiring is a single phase power supply even with controlled electricity, power consumption does not exceed the rated capacity of the switch (resistive load 10A induction load 5a), and can be used in direct control mode 2. Single phase expansion mode wiring is electrically controlled and single phase power supply and the power consumption does not exceed the rated capacity of the switch. Subsequently, replacement and extension of contacts require more capacity than 3. This three-phase work mode wiring is electrically controlled to a three-phase power supply and requires an external three-phase AC contactor. The coil voltage of the control contactor is AC 220V 50hz wiring mode. Note 1.Pictures on the detail page are for reference only, some of the differences do not affect the user experience. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please forgive!