ExtendedColorLightDevice with only 'HueSaturation' feature shows Temperature tab in Apple Home

[WeeJeWel]

I have the following device:

          const endpointLight = new Endpoint(ExtendedColorLightDevice.with(
            OnOffServer,
            LevelControlServer,
            ColorControlServer.with(ColorControl.Feature.HueSaturation), // This is important
          ), {
            id: 'light',
            onOff: {
              onOff: true,
            },
            levelControl: {
              currentLevel: 254,
              minLevel: 1,
              maxLevel: 254,
            },
            colorControl: {
              colorMode: ColorControl.ColorMode.CurrentHueAndCurrentSaturation,
              currentHue: 0,
              currentSaturation: 1,
            },

In other words, it's a device with On/Off, Brightness, Hue & Saturation.

Yet, in Apple Home, the 'Temperature' tab shows up, between the 'Color' and 'Swatches' tabs.

Am I not defining my device's features correctly? Anything else I could do to make the Temperature tab disappear?

[Apollon77]

We automatically add all servers that are required by the defined Device type as by matter specification. This in fact is not needed to be done by you (this note applies for OnOffServer and LevelControlServer you added here - unless you provided an own implementation here. if it is just the default implementation then you do not need to add this.

Then yes you add a ColorControl cluster without color temperature.

This is formally against the specification because the "Extended color light" device type requires at least the following ColroControl features:

• XY
• ColorTemperature
  The HueAndSaturation feature is optional.

This means that the question for controllers is now how they map the devices to their UIs. Some controllers use the device type and some really look at the provided clusters.
So Apple seems to do the first and simply expects that your device follows specification - which your device does not do.

if you really want to provide a device like you did then you need to use a "DimmableLight Device" and add a colorControl cluster with Hue to it. Formally it is still a big question which controller is then really showing color control options but at least I did saw such devices in real life too.

[WeeJeWel]

Thank you for your elaborate answer @Apollon77! I truly appreciate it.

You're right — I do overload OnOffServer, LevelControlServer and ColorControlServer to implement their async methods, but for the example I omitted those.

I also tried to use a DimmableLightDevice with a ColorControlServer yet Apple Home still shows a 'Temperature' tab.

There are surely many bulbs on the market with only On/Off + Brightness + Color and no dedicated color temperature, you'd say right? How would they advertise themselves?

[WeeJeWel]

Lol. I just noticed that while Apple Home does indeed show a 'Temperature' tab, it actually sends a moveToHueAndSaturation command. So they internally convert to a Hue/Sat color. 😂

[Apollon77]

Thats actually what I meant ... how they really do things is up to the ecosystem.

I would also not say "many bulbs on the market with only On/Off + Brightness + Color and no dedicated color temperature" ... I just came across one such device.