split switch

例句：

1. 1. The engineer needs to replace the split switch in the factory's main electrical panel.
   工程师需要更换工厂主电控板中的分路开关。
2. 2.The old house had a split switch that controlled the lighting in the living room.
   旧房子有一个控制客厅照明的分路开关。
3. 3.When the power went out, we used the split switch to turn on the emergency lights.
   当停电时，我们用分路开关打开紧急灯。