Need help with configuration of multiple controllers in the same house

[itzek]

if you MUST need use by TOGGLE, by network is OK. But by RS485, you need to use two different KC868-AK board with differernt relay controller.
one KC868-AK only support ON/OFF action for multi relay controllers by RS485 bus.

So I would love a video tour
that use one KC868-AK different button control different relay controller by network (Ethernet or Wifi)
that  can TOGGLE different controller's relay.