Is it possible to have "auto-off" feature on the White Series Smart Dimmer?

the fan switch and on/off switch has this feature but doesn’t seem like the dimmer has it?

My use case: shower light I wanna have dimmable but for it to auto turn off after X minutes (guests always forget to turn it off)

Why not just do it by an automation?

As an FYI - All Matter On/Off lighting devices have a “mandatory” Off timer function as part of the switch cluster command set, but almost none of available controllers make use of it which is unfortunate. The exception is the custom Hubitat driver which allows you to make use the Matter timer function in the dimmer switch.

The Inovelli Fan and On/Off switches do, however, also implement a “non-standard” way of implementing an Off timer. Personally, in order to try and minimize bugs in an already complex protocol, I think vendors should try to keep device firmware as simple as possible and only implement in firmware the features that can’t be reasonably implemented by an automation, but that’s just my view.

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