The low-voltage relay and the excess voltage relay are integrated into one relay, which can display the real time of the voltage of the circuit and the limit of voltage can be modified.
该继电器的设计思想是将过压继电器和欠压继电器集成到一起，并且实时显示所测电压值，能修改电压的上、下限。
The low-voltage relay and the excess voltage relay are integrated into one relay, which can display the real time of the voltage of the circuit and the limit of voltage can be modified.
该继电器的设计思想是将过压继电器和欠压继电器集成到一起，并且实时显示所测电压值，能修改电压的上、下限。
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