What distinguishes device 1 from device 6?

In configuration I see Light (1) and Light (6). This (1) and (6) appears many times in different options and situations. What is the difference between (1) and (6) and where is it documented? I have searched and have not found anything.

Screenshot 2024-08-27 at 22.37.36

Light 1 is the switched load, and light 6 is the LED notification bar…

Do you know where this is documented? I’m in smart bulb mode and so my button presses, including on and off, are all scenes or commands of home assistant. If Light 1 is switched load, in smart bulb mode should I just pretend it doesn’t exist?

Essentially, yes. The endpoint will still report the dimmer level that the device “thinks” it is at, even though the device is, in fact, always delivering full power to the load. In HomeAssistant, you can still process the reported dimmer level to run an automation which then changes your smart bulb levels.

As an FYI - If you go to HomeAssistant → Add-ons → Matter Server-> “Open Web UI”, you can get more information on each endpoint for the device.
EP #1 - the load control
EP #2 - A “Dimmer Switch” endpoint - this is associated with the physical actuator paddle and is used for Matter bindings, no platform currently supports setting bindings though (but it is there for the future)
EP #3 - #5 - These endpoints are used for the button tapping feature
EP #6 - This is for control of the LED bar. Basically, you use that second light control to set the LED bar if you want to use it in an “alert” or “notification” mode, rather than to indicate the current dimming level

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