home_assistant_sync_switch_and_light

sync_light_and_switch.yaml

blueprint:
  name: Link On/Off State of Light and Switch
  description: |
    ## Link On/Off State of Light and Switch v1.0.1

    Synchronize the on/off state between a specific light and a specific switch. When either the light or the switch is turned on or off, the other will match its state.

    ### Requirements
    * The light and switch entities MUST support `homeassistant.turn_on` and `homeassistant.turn_off` or errors will be logged and the blueprint will not work.
    * Requires Home Assistant 2022.5.0 or newer.

    ### Credits
    * Adapted from a blueprint by [@adchevrier](https://community.home-assistant.io/u/adchevrier) and [@hebus](https://community.home-assistant.io/u/hebus).

  domain: automation
  homeassistant:
    min_version: 2022.5.0
  input:
    light:
      name: Light Entity
      selector:
        entity:
          domain: light
    switch:
      name: Switch Entity
      selector:
        entity:
          domain:
            - switch
            - light

mode: queued
max_exceeded: silent

variables:
  light_entity: !input 'light'
  switch_entity: !input 'switch'

trigger:
  - platform: state
    entity_id: !input 'light'
  - platform: state
    entity_id: !input 'switch'

condition:
  - condition: template
    value_template: '{{ trigger.to_state.state != trigger.from_state.state }}'
  - condition: template
    value_template: '{{ (trigger.to_state.state == "on") or (trigger.to_state.state == "off") }}'
  - 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:
  - choose:
      - conditions: '{{ trigger.entity_id == light_entity }}'
        sequence:
          - service: homeassistant.turn_{{ trigger.to_state.state }}
            target:
              entity_id: '{{ switch_entity }}'
      - conditions: '{{ trigger.entity_id == switch_entity }}'
        sequence:
          - service: homeassistant.turn_{{ trigger.to_state.state }}
            target:
              entity_id: '{{ light_entity }}'