Switch Null?

How can I create a switch that controls nothing, just to use it in Node-Red?

I need to create something that has a state, and i would be able to control it, on/off.

I’m using a Wake Up On Lan Switch with a invalid mac adress there… But i don’t think that’s a nice way to make it!
I tried to search something about, but no solutions till now.

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Some idea why this isn’t working?

Oh, the domain needs to be Input_boolean, my mistake.
Thanks for the help!