core/homeassistant/components/knx/services.yaml

send:
  description: "Send arbitrary data directly to the KNX bus."
  fields:
    address:
      description: "Group address(es) to write to."
      example: "1/1/0"
    payload:
      description: "Payload to send to the bus. Integers are treated as DPT 1/2/3 payloads. For DPTs > 6 bits send a list. Each value represents 1 octet (0-255). Pad with 0 to DPT byte length."
      example: "[0, 4]"
    type:
      description: "Optional. If set, the payload will not be sent as raw bytes, but encoded as given DPT. Knx sensor types are valid values (see https://www.home-assistant.io/integrations/sensor.knx)."
      example: "temperature"
read:
  description: "Send GroupValueRead requests to the KNX bus. Response can be used from `knx_event` and will be processed in KNX entities."
  fields:
    address:
      description: "Group address(es) to send read request to. Lists will read multiple group addresses."
      example: "1/1/0"
event_register:
  description: "Add or remove single group address to knx_event filter for triggering `knx_event`s. Only addresses added with this service can be removed."
  fields:
    address:
      description: "Group address that shall be added or removed."
      example: "1/1/0"
    remove:
      description: "Optional. If `True` the group address will be removed. Defaults to `False`."