This component is provided by the Net Splitter.
The net splitter connects networks, just like a cable. But the net splitter faces can be opened or closed, separating networks. A redstone signal inverts the faces. A scrench can be used to open/close a face. The net splitter also has an api to configure the faces.
Component name: net_splitter
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Callbacks:
open(side: number):number
close():number
getSides():table
setSides(settings: table):table