switch key

例句：

1. 1.The switch key on the remote controls the TV.
   遥控器上的开关键控制电视。
2. 2. The switch key is located on the side of the door.
   开关键位于门的侧面。
3. 3.The switch key was accidentally left in the on position.
   开关键不小心被误置于开启位置。