Sensor Value to RGB Light Color blueprint

value_to_rgb.yaml

blueprint:
  name: Sensor Value to RGB Light Color
  description: >
    Changes the color of RGB lights to green, yellow, or red depending on the numeric sensor value.
    You can configure threshold values and brightness.
  domain: automation
  input:
    sensor:
      name: Numeric Sensor
      description: A sensor with numeric values (e.g. temperature, CO2 level)
      selector:
        entity:
          domain: sensor
    rgb_lights:
      name: RGB Light(s)
      description: One or more RGB lights
      selector:
        target:
          entity:
            domain: light
    green_threshold:
      name: Green Max Value
      description: Max value (inclusive) for green
      default: 60
      selector:
        number:
          min: 0
          max: 10000
          step: 1
          mode: box
    yellow_threshold:
      name: Yellow Max Value
      description: Max value (inclusive) for yellow
      default: 120
      selector:
        number:
          min: 0
          max: 10000
          step: 1
          mode: box
    brightness:
      name: Brightness (%)
      description: Brightness of the RGB light (1–100%)
      default: 100
      selector:
        number:
          min: 1
          max: 100
          step: 1
          unit_of_measurement: "%"
          mode: slider

trigger:
  - platform: state
    entity_id: !input sensor

variables:
  sensor_entity: !input sensor
  green_max: !input green_threshold
  yellow_max: !input yellow_threshold
  brightness_value: !input brightness

condition: []

action:
  - variables:
      sensor_value: "{{ states(sensor_entity) | float(0) }}"

  - choose:
      - conditions:
          - condition: template
            value_template: "{{ sensor_value <= green_max }}"
        sequence:
          - service: light.turn_on
            target: !input rgb_lights
            data:
              rgb_color: [0, 255, 0]
              brightness_pct: "{{ brightness_value }}"

      - conditions:
          - condition: template
            value_template: "{{ sensor_value > green_max and sensor_value <= yellow_max }}"
        sequence:
          - service: light.turn_on
            target: !input rgb_lights
            data:
              rgb_color: [255, 255, 0]
              brightness_pct: "{{ brightness_value }}"

      - conditions:
          - condition: template
            value_template: "{{ sensor_value > yellow_max }}"
        sequence:
          - service: light.turn_on
            target: !input rgb_lights
            data:
              rgb_color: [255, 0, 0]
              brightness_pct: "{{ brightness_value }}"

mode: restart