text: """
  Module for managing an RGBW remote value.
  
  DPT 251.600.
  """
  from __future__ import annotations
  
  from typing import TYPE_CHECKING, Sequence, Tuple
  
  from xknx.dpt import DPTArray, DPTBinary
  from xknx.exceptions import ConversionError
  
  from .remote_value import AsyncCallbackType, GroupAddressesType, RemoteValue
  
  if TYPE_CHECKING:
      from xknx.xknx import XKNX
  
  
  class RemoteValueColorRGBW(RemoteValue[DPTArray, Tuple[int, int, int, int]]):
      """Abstraction for remote value of KNX DPT 251.600 (DPT_Color_RGBW)."""
  
      def __init__(
          self,
          xknx: XKNX,
          group_address: GroupAddressesType | None = None,
          group_address_state: GroupAddressesType | None = None,
          sync_state: bool | int | float | str = True,
          device_name: str | None = None,
          feature_name: str = "Color RGBW",
          after_update_cb: AsyncCallbackType | None = None,
      ):
          """Initialize remote value of KNX DPT 251.600 (DPT_Color_RGBW)."""
          super().__init__(
              xknx,
              group_address,
              group_address_state,
              sync_state=sync_state,
              device_name=device_name,
              feature_name=feature_name,
              after_update_cb=after_update_cb,
          )
          self.previous_value: tuple[int, int, int, int] = (0, 0, 0, 0)
  
      def payload_valid(self, payload: DPTArray | DPTBinary | None) -> DPTArray | None:
          """Test if telegram payload may be parsed."""
          # pylint: disable=no-self-use
          return (
              payload
              if isinstance(payload, DPTArray) and len(payload.value) == 6
              else None
          )
  
      def to_knx(self, value: Sequence[int]) -> DPTArray:
          """
          Convert value (4-6 bytes) to payload (6 bytes).
  
          * Structure of DPT 251.600
          ** Byte 0: R value
          ** Byte 1: G value
          ** Byte 2: B value
          ** Byte 3: W value
          ** Byte 4: 0x00 (reserved)
          ** Byte 5:
          *** Bit 0: W value valid?
          *** Bit 1: B value valid?
          *** Bit 2: G value valid?
          *** Bit 3: R value valid?
          *** Bit 4-7: 0
  
          In case we receive
          * > 6 bytes: error
          * 6 bytes: all bytes are passed through
          * 5 bytes: 0x00?? fill up to 6 bytes
          * 4 bytes: 0x000f right padding to 6 bytes
          * < 4 bytes: error
          """
          # pylint: disable=no-self-use
          if not isinstance(value, (list, tuple)):
              raise ConversionError(
                  "Could not serialize RemoteValueColorRGBW (wrong type, expecting list of 4-6 bytes))",
                  value=value,
                  type=type(value),
              )
          if len(value) < 4 or len(value) > 6:
              raise ConversionError(
                  "Could not serialize value to DPT 251.600 (wrong length, expecting list of 4-6 bytes)",
                  value=value,
                  type=type(value),
              )
          rgbw = value[:4]
          if (
              any(not isinstance(color, int) for color in rgbw)
              or any(color < 0 for color in rgbw)
              or any(color > 255 for color in rgbw)
          ):
              raise ConversionError(
                  "Could not serialize DPT 251.600 (wrong RGBW values)", value=value
              )
          if len(value) < 5:
              return DPTArray(list(rgbw) + [0x00, 0x0F])
          if len(value) < 6:
              return DPTArray(list(rgbw) + [0x00] + list(value[4:]))
          return DPTArray(value)
  
      def from_knx(self, payload: DPTArray) -> tuple[int, int, int, int]:
          """
          Convert current payload to value. Always 4 byte (RGBW).
  
          If one element is invalid, use the previous value. All previous element
          values are initialized to 0.
          """
          _result = list(self.previous_value)
          for i in range(0, len(payload.value) - 2):
              if payload.value[5] & (0x08 >> i):  # R,G,B,W value valid?
                  _result[i] = payload.value[i]
          result = (_result[0], _result[1], _result[2], _result[3])
          self.previous_value = result
          return result
  