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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The liquid-crystal display has the low voltage, the low power loss characteristic, matches with the CMOS integrated circuit.

液晶显示器具有低电压、低功耗的特点，与CMOS集成电路相匹配。

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