synchronize_2_entities_states.yaml

blueprint:
  name: Synchronize entities states
  description: Synchronize 2 entities states
  domain: automation
  input:
    entity_1:
      name: First entity
      selector:
        entity: {}
    entity_2:
      name: Second entity
      selector:
        entity: {}
    feature_switch:
      name: Validation boolean
      description: Boolean helper specifying if the the automation is on or off
      selector:
        entity:
          domain: input_boolean
          multiple: false
  source_url: https://github.com/Highjack77/homeassistant/blob/main/synchronize_2_entities_states.yaml
variables:
  entity_1: !input entity_1
  entity_2: !input entity_2
trigger:
- platform: state
  entity_id: !input entity_1
- platform: state
  entity_id: !input entity_2
condition:
- condition: state
  entity_id: !input feature_switch
  state: 'on'
- condition: template
  value_template: "{{ trigger.to_state.state != 'unavailable' }}"
action:
- service: homeassistant.turn_{{ trigger.to_state.state }}
  data:
    entity_id: '{% if trigger.from_state.entity_id == entity_1 %} {{ entity_2 }} {%
      else %} {{ entity_1 }} {% endif %}'
mode: restart
max_exceeded: silent