I want turn on and off the light and control brightness.
A change in the application does not change the state on the switch, but after a few seconds it returns to the state that is actually on the switch.
I bought the Dimmer too. And can confirm that the Dimmer-Buttons only function if the Mainbutton in the middle is on. So my problem is that I wanted to control (dimming) other (not physically conected) LED-Stribes at first. But the entity for the Dimmer-Button are missing.