I already made a pretty extensive wiki article about this. I even made animated GIF images in case words alone didn't help.

As much as the effort is appreciated, this is one element you really don't need to cover, unless you're making functional tutorials, like how to better manage heating and cooling Wifi particles when you need to cover all the range of wifi channels.

https://powdertoy.co.uk/Wiki.html?id=using_wifi_element

I mean seriously. :P

We need some kind of link to it in the game, maybe. o_o;