blueprint:
  name: Linked Lights
  description: >-

    [![Open your Home Assistant instance and show the blueprint import dialog with a specific blueprint pre-filled.](https://my.home-assistant.io/badges/blueprint_import.svg)](https://my.home-assistant.io/redirect/blueprint_import/?blueprint_url=https%3A%2F%2Fraw.githubusercontent.com%2Fjnrcorp%2Fha-blueprints%2Fmain%2Flinked-lights%2Fha-blueprint-linked-lights.yaml)

    **Linked Lights v1.0**

    This blueprint allows you to easily create/maintain an automation that links the state of multiple light entities:
      - turn ANY linked light ON, it will turn ON ALL linked lights.
      - turn ANY linked light OFF, it will turn OFF ALL linked Lights.
      - set the brightness of any light entity, it will set the same brightness of ALL linked light entities.
      - set the color temp of any light entity, it will set the same color temperature of ALL linked light entities.

    **NOTE**: You can select any light entity with an ON/OFF state (bulbs, lights, etc.), lights with brightness or color temperature attributes.

    My main use-case was for multiple light switches in the house controlling the same light.

    **CHANGELOG:**
      - 1.0: (2025-05-10)
        - First official release - ported from https://github.com/alexdelprete/ha-blueprints

    **Source:**
    [![jnrcorp - ha-blueprints](https://img.shields.io/static/v1?label=jnrcorp&message=ha-blueprints&color=blue&logo=github)](https://github.com/jnrcorp/ha-blueprints/blob/main/linked-lights/ha-blueprint-linked-lights.yaml "Go to GitHub repo") [![stars - ha-blueprints](https://img.shields.io/github/stars/jnrcorp/ha-blueprints?style=social)](https://github.com/jnrcorp/ha-blueprints) [![forks - ha-blueprints](https://img.shields.io/github/forks/jnrcorp/ha-blueprints?style=social)](https://github.com/jnrcorp/ha-blueprints)

    **Support:**
    [![HA Community - Topic](https://img.shields.io/static/v1?label=HA+Community&message=Topic&color=2ea44f&logo=home-assistant)](https://community.home-assistant.io/t/linked-lights-keep-lights-in-sync/887934?u=jnrcorp)

  domain: automation
  input:
    linked_light:
      name: Linked Lights
      description: Lights whose state and attributes will be linked (if any of them transitions to ON state, all will be ON. Same for the OFF, BRIGHTNESS, COLOR_TEMP, and SPEED states).
      selector:
        entity:
          filter:
            domain: light
          multiple: true
    delay_miliseconds:
      name: Delay
      description: How long to delay changes to linked lights
      selector:
        number:
          min: 0
          max: 1000
          unit_of_measurement: miliseconds
          mode: box
      default: 200

mode: single
max_exceeded: silent

variables:
  linked_lights: !input linked_light

trigger:
  - platform: state
    id: turn_on
    entity_id: !input linked_light
    from: "off"
    to: "on"
  - platform: state
    id: turn_off
    entity_id: !input linked_light
    from: "on"
    to: "off"
  - platform: state
    id: set_speed
    entity_id: !input linked_light
    attribute: percentage
  - platform: state
    id: set_brightness
    entity_id: !input linked_light
    attribute: brightness
  - platform: state
    id: set_color_temp
    entity_id: !input linked_light
    attribute: color_temp

condition:
  - condition: template
    value_template: "{{ trigger.to_state.context.id != this.context.id }}"

action:
  - choose:
      - conditions:
          - condition: trigger
            id: turn_on
        sequence:
          - variables:
              set_light_brightness: "{{ trigger.to_state.attributes.brightness }}"
              set_light_color_temp: "{{ trigger.to_state.attributes.color_temp }}"
          - service: light.turn_on
            data:
              entity_id: "{{linked_lights | reject('eq', trigger.entity_id) | list }}"
              brightness: "{{ set_light_brightness }}"
              color_temp: "{{ set_light_color_temp }}"
          - delay:
              milliseconds: !input delay_miliseconds
      - conditions:
          - condition: trigger
            id: turn_off
        sequence:
          - service: "light.turn_off"
            data:
              entity_id: "{{linked_lights | reject('eq', trigger.entity_id) | list }}"
          - delay:
              milliseconds: !input delay_miliseconds
      - conditions:
          - condition: trigger
            id: set_speed
        sequence:
          - variables:
              set_fan_speed: "{{ trigger.to_state.attributes.percentage }}"
          - service: fan.set_percentage
            data:
              entity_id: "{{linked_lights | reject('eq', trigger.entity_id) | list }}"
              percentage: "{{ set_fan_speed }}"
          - delay:
              milliseconds: !input delay_miliseconds
      - conditions:
          - condition: trigger
            id: set_brightness
        sequence:
          - variables:
              set_light_brightness: "{{ trigger.to_state.attributes.brightness }}"
          - service: light.turn_on
            data:
              entity_id: "{{linked_lights | reject('eq', trigger.entity_id) | list }}"
              brightness: "{{ set_light_brightness }}"
          - delay:
              milliseconds: !input delay_miliseconds
      - conditions:
          - condition: trigger
            id: set_color_temp
        sequence:
          - variables:
              set_light_color_temp: "{{ trigger.to_state.attributes.color_temp }}"
          - service: light.turn_on
            data:
              entity_id: "{{linked_lights | reject('eq', trigger.entity_id) | list }}"
              color_temp: "{{ set_light_color_temp }}"
          - delay:
              milliseconds: !input delay_miliseconds