Can you explain to me how this device works exactly? It says that it allows you to control your lights from the HA system and with “normal switches”. It says that you have to install it before the first light, like in the attached diagram.
But how does this unit have power if the switch is off? I don’t understand how it would even have any more since the only power it gets is when the switch is turned on. Otherwise the hot wire has no electricity and no flow, hence why the lights are off.