core/homeassistant/components/remote/services.yaml

# Describes the format for available remote services

turn_on:
  description: Sends the Power On Command.
  fields:
    entity_id:
      description: Name(s) of entities to turn on.
      example: 'remote.family_room'
    activity:
      description: Activity ID or Activity Name to start.
      example: 'BedroomTV'

toggle:
  description: Toggles a device.
  fields:
    entity_id:
      description: Name(s) of entities to toggle.
      example: 'remote.family_room'

turn_off:
  description: Sends the Power Off Command.
  fields:
    entity_id:
      description: Name(s) of entities to turn off.
      example: 'remote.family_room'

send_command:
  description: Sends a single command to a single device.
  fields:
    entity_id:
      description: Name(s) of entities to send command from.
      example: 'remote.family_room'
    device:
      description: Device ID to send command to.
      example: '32756745'
    command:
      description: A single command or a list of commands to send.
      example: 'Play'
    num_repeats:
      description: An optional value that specifies the number of times you want to repeat the command(s). If not specified, the command(s) will not be repeated.
      example: '5'
    delay_secs:
      description: An optional value that specifies that number of seconds you want to wait in between repeated commands. If not specified, the default of 0.4 seconds will be used.
      example: '0.75'

harmony_sync:
  description: Syncs the remote's configuration.
  fields:
    entity_id:
      description: Name(s) of entities to sync.
      example: 'remote.family_room'

xiaomi_miio_learn_command:
  description: 'Learn an IR command, press "Call Service", point the remote at the IR device, and the learned command will be shown as a notification in Overview.'
  fields:
    entity_id:
      description: 'Name of the entity to learn command from.'
      example: 'remote.xiaomi_miio'
    slot:
      description: 'Define the slot used to save the IR command (Value from 1 to 1000000)'
      example: '1'
    timeout:
      description: 'Define the timeout in seconds, before which the command must be learned.'
      example: '30'