Fibaro dimmer 2 controlling a group of other Fibaro dimmers

Configuration
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Hello smart people!

I would like use a single Fibaro dimmer 2 to control (turn on, turn off and dim) a group of Fibaro dimmer 2:s.

For instance, when I long press the wall switch, all the other fibaros shall be synchronisedly dimmed.

What is the best way to do this?
Best = more flexibility.

Prerequisite:

  • I have a wall switch that has no light connected to it (long story, never mind why).
  • I already have a Fibaro dimmer 2 connected to this “spare wall switch”.
  • I have a bunch of other Fibaro dimmers, each controlling a light.
  • HA is 0.111.4 (latest version as of the date when writing this post)…

Questions:

  • Can one single Fibaro dimmer control a light group in some way?
  • Can you set the brightness value in a light group to always be exactly the same as the brightness of an other Fibaro dimmer

Turning the lights on and off is quite easy (by using an automation or perhaps an association), but what is the best way to control the dimming functionality of a group of fibaro dimmer 2?

2

I have just started using the new ZwaveJS integration and I had the same questions…

  1. Yes, a Fibaro dimmer can control a group of zwave devices in assosiations
    Bonus, assosiations is stored in firmware of dimmer, and works even when HA is down. Bugger… Assosiations is not supported in ZwaveJS (But I found a solution)

  2. Yes, you select sync in the Configuration of the Fibaro Dimmer:
    “PARAMETER 18:mSynchronizing light level for associated devices
    The dimmer communicate the level to the associated devices. (default value 0)”

I found that setting assosiations in ZwaveJS2MQTT is easy, and since it’s stored in the firmware, I boot a docker image with ZwaveJS2MQTT with my Z-Stick and set all needed assosiations, and then boot my HA with the Z-Stick when done.