ha-sync-on-off-state-of-switches.yaml

blueprint:
  name: Sync Multiple Switches
  description: Sync the On/Off state of multiple switches
  domain: automation
  input:
    switch:
      name: Switches to Control
      selector:
        entity:
          multiple: true
          domain:
            - switch
            - light
variables:
  switches: !input switch
trigger:
  - platform: state
    entity_id: !input switch
mode: restart
max_exceeded: silent
condition:
  - condition: template
    value_template: '{{ trigger.to_state.state == ''on'' or trigger.to_state.state == ''off'' }}'
  - condition: template
    value_template: '{{ trigger.to_state.state != trigger.from_state.state }}'
  - condition: template
    value_template: >
      {{ trigger.to_state.context.parent_id is none or (
           trigger.to_state.context.id         != this.context.id and 
           trigger.to_state.context.parent_id  != this.context.id
         ) }}
action:
  - service: 'homeassistant.turn_{{ trigger.to_state.state }}'
    target: 
      entity_id: '{{ expand(switches) | selectattr("entity_id", "!=", trigger.entity_id) | map(attribute="entity_id") | list }}'