高电压控制电路 High Voltage Control Circuit
低电压控制电路 Low Voltage Control Circuit
我低电压电路控制位于 Control located in low-voltage circuit
用途：高电压控制电路。
对于PLC控制器，低电压控制电路和三相电源要有必要的了解。
Understanding of PLC controllers, low voltage control circuits and three-phase power necessary.
在燃气加热安装系统的自激控制电路中，整个标准开关适用于毫伏电压。
Standard switch entirely suitable for millivolt service on self-energized control circuits of gas fired heating installations.
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