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The Switch is a structure used to enable or disable a power source. It requires Wire and a Power source. It is 2 tiles high and can float in the air. A Duplicant will need to be near the switch to turn it on and off. The Switch is used to conserve power to items when it is not needed. The Switch will disable anything connected to wires beyond it, so use multiple switches when needed to keep power to select items if they are in a loop.