home-assistant.io/source/_integrations/light.markdown

title	description	ha_category	ha_release	ha_quality_scale	ha_domain	ha_iot_class
Light	Instructions on how to setup your lights with Home Assistant.	Light	pre 0.7	internal	light

This integration allows you to track and control various light bulbs. Read the integration documentation for your particular light hardware to learn how to enable it.

Default turn-on values

To set the default color, brightness and transition values when the light is turned on, create a custom light_profiles.csv, normally located in the default configuration folder where you find configuration.yaml.

The light_profiles.csv has to have a header. The format of the header is:

profile,color_x,color_y,brightness,transition

The field transition is optional and can be omitted.

The .default suffix should be added to the entity identifier of each light to define a default value, e.g., for light.ceiling_2 the profile field is light.ceiling_2.default. To define a default for all lights, the identifier group.all_lights.default can be used. Individual settings always supercede the all_lights default setting.

Service light.turn_on

Turns one light on or multiple lights on using groups.

Most lights do not support all attributes. You can check the integration documentation of your particular light for hints, but in general, you will have to try things out and see what works.

Service data attribute	Optional	Description
entity_id	no	String or list of strings that point at entity_ids of lights. To target all the lights use all as entity_id.
transition	yes	Number that represents the time (in seconds) the light should take to transition to the new state.
profile	yes	String with the name of one of the built-in profiles (relax, energize, concentrate, reading) or one of the custom profiles defined in light_profiles.csv in the current working directory. Light profiles define an xy color, brightness and a transition value (if no transition is desired, set to 0 or leave out the column entirely). If a profile is given, and a brightness is set, then the profile brightness will be overwritten.
hs_color	yes	A list containing two floats representing the hue and saturation of the color you want the light to be. Hue is scaled 0-360, and saturation is scaled 0-100.
xy_color	yes	A list containing two floats representing the xy color you want the light to be. Two comma-separated floats that represent the color in XY. You can find a great chart here: Hue Color Chart.
rgb_color	yes	A list containing three integers between 0 and 255 representing the RGB color you want the light to be. Three comma-separated integers that represent the color in RGB, within square brackets. Note that the specified RGB value will not change the light brightness, only the color.
white_value	yes	Integer between 0 and 255 for how bright a dedicated white LED should be.
color_temp	yes	An integer in mireds representing the color temperature you want the light to be.
kelvin	yes	Alternatively, you can specify the color temperature in Kelvin.
color_name	yes	A human-readable string of a color name, such as blue or goldenrod. All CSS3 color names are supported.
brightness	yes	Integer between 0 and 255 for how bright the light should be, where 0 means the light is off, 1 is the minimum brightness and 255 is the maximum brightness supported by the light.
brightness_pct	yes	Alternatively, you can specify brightness in percent (a number between 0 and 100), where 0 means the light is off, 1 is the minimum brightness and 100 is the maximum brightness supported by the light.
brightness_step	yes	Change brightness by an amount. Should be between -255..255.
brightness_step_pct	yes	Change brightness by a percentage. Should be between -100..100.
flash	yes	Tell light to flash, can be either value short or long.
effect	yes	Applies an effect such as colorloop or random.

In order to apply attributes to an entity, you will need to add data: to the configuration. See example below

# Example configuration.yaml entry
automation:
- id: one
  alias: "Turn on light when motion is detected"
  trigger:
    - platform: state
      entity_id: binary_sensor.motion_1
      to: "on"
  action:
    - service: light.turn_on
      target:
        entity_id: light.living_room
      data:
        brightness: 255
        kelvin: 2700

# Ledlist morning on, red
- id: llmor
  alias: "Stair morning on"
  trigger:
  - at: '05:00'
    platform: time
  action:
    - service: light.turn_on
      target:
        entity_id: light.ledliststair
      data:
        brightness: 130
        rgb_color: [255,0,0]

Service light.turn_off

Turns one or multiple lights off.

Service data attribute	Optional	Description
entity_id	no	String or list of strings that point at entity_ids of lights. To target all the lights use all as entity_id.
transition	yes	Integer that represents the time the light should take to transition to the new state in seconds.

Service light.toggle

Toggles the state of one or multiple lights. Takes the same arguments as turn_on service.

Note: If light.toggle is used for a group of lights, it will toggle the individual state of each light. If you want the lights to be treated as a single light, use Light Groups instead.