Dim a group of lights simultaneously

@bartplessers wrote:

Hello,

Just wondering: I have created some automations for my IKEA bulbs. I.e. Please help: automation for IKEA TRADFRI remote control (E1524/E1810)

I’m wondering: is it possible to

• group a set of bulbs
• send a command to the group
• all the members of the group react simultaneously

thus something like

action:
      data_template:
        entity_id: light.MYGROUP
        brightness: "{{ [state_attr('light.MYGROUP', 'brightness') - 50, 1] | max }}"
      service: light.turn_on

can this be done?

thanx in advance!

kind regards,
Bart

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