注:图中L、L1、L2、L12、L22、L21、L22为开关接线柱标识。
三控开关:中心那个开关叫做“半途开关”或许“多控开关”,本地买不到的话能够在淘宝等当地买,西门子的大约20~30多块钱,松下的贵,80~90多块。也能够用一般“双开双控开关”改造,把双开双控开关的两个翘板用“热熔胶”、“502”或“哥俩好”粘住,就变成了一个“半途开关”,接法同下面“一般半途开关接线、一般半途开关接线图(黄色线为跳线、松下半途开关:
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