# Attributes

    struct Attributes

Attributes for the `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait.html`.
- `


  ### [attributeList](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13attributeListSays6UInt32VGSgvp)


  ` A list of the attribute IDs of the attributes supported by the cluster instance.
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var attributeList: [UInt32]? { get }

- `


  ### [measuredValue](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp)


  ` The most recent measurement as a single-precision floating-point number, in units specified
  by `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV15measurementUnitAE0gK4EnumOSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measurementUnit\].
  Nullable: true.

  #### Declaration

  Swift

      @TraitAttribute
      var measuredValue: Float32? { get }

- `


  ### [minMeasuredValue](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV16minMeasuredValueSfSgvp)


  ` The minimum value of
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measuredValue\] that can be
  measured.
  Nullable: true.

  #### Declaration

  Swift

      @TraitAttribute
      var minMeasuredValue: Float32? { get }

- `


  ### [maxMeasuredValue](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV16maxMeasuredValueSfSgvp)


  ` The maximum value of
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measuredValue\] that can be
  measured.
  Nullable: true.

  #### Declaration

  Swift

      @TraitAttribute
      var maxMeasuredValue: Float32? { get }

- `


  ### [peakMeasuredValue](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV17peakMeasuredValueSfSgvp)


  ` The maximum value of
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measuredValue\] that has been
  measured during the
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV23peakMeasuredValueWindows6UInt32VSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.peakMeasuredValueWindow\].
  Nullable: true.

  #### Declaration

  Swift

      @TraitAttribute
      var peakMeasuredValue: Float32? { get }

- `


  ### [peakMeasuredValueWindow](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV23peakMeasuredValueWindows6UInt32VSgvp)


  ` The window of time used for determining the
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV17peakMeasuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.peakMeasuredValue\] in
  seconds.
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var peakMeasuredValueWindow: UInt32? { get }

- `


  ### [averageMeasuredValue](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV20averageMeasuredValueSfSgvp)


  ` The average value of
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measuredValue\] measured during
  the
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV26averageMeasuredValueWindows6UInt32VSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.averageMeasuredValueWindow\].
  Nullable: true.

  #### Declaration

  Swift

      @TraitAttribute
      var averageMeasuredValue: Float32? { get }

- `


  ### [averageMeasuredValueWindow](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV26averageMeasuredValueWindows6UInt32VSgvp)


  ` The window of time, in seconds, used to determine the
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV20averageMeasuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.averageMeasuredValue\].
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var averageMeasuredValueWindow: UInt32? { get }

- `


  ### [uncertainty](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV11uncertaintySfSgvp)


  ` The range of error or deviation that can be found in
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measuredValue\] and
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV23peakMeasuredValueWindows6UInt32VSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.peakMeasuredValueWindow\].
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var uncertainty: Float32? { get }

- `


  ### [measurementUnit](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV15measurementUnitAE0gK4EnumOSgvp)


  ` The unit used by
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measuredValue\].
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var measurementUnit: https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/MeasurementUnitEnum.html? { get }

- `


  ### [measurementMedium](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV17measurementMediumAE0gK4EnumOSgvp)


  ` The medium in which
  `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes.html#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV13measuredValueSfSgvp`\[Pm25ConcentrationMeasurementTrait.Attributes.measuredValue\] is being
  measured.
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var measurementMedium: https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/MeasurementMediumEnum.html? { get }

- `


  ### [levelValue](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV10levelValueAE05LevelK4EnumOSgvp)


  ` The level of the substance detected.
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var levelValue: https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/LevelValueEnum.html? { get }

- `


  ### [generatedCommandList](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV20generatedCommandListSays6UInt32VGSgvp)


  ` A list of server-generated commands (server to client) which are supported by this
  cluster server instance.
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var generatedCommandList: [UInt32]? { get }

- `


  ### [acceptedCommandList](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV19acceptedCommandListSays6UInt32VGSgvp)


  ` A list of client-generated commands which are supported by this cluster server instance.

  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var acceptedCommandList: [UInt32]? { get }

- `


  ### [featureMap](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV10featureMapAE7FeatureVSgvp)


  ` Whether the server supports zero or more optional cluster features. A cluster feature
  is a set of cluster elements that are mandatory or optional for a defined feature of the
  cluster. If a cluster feature is supported by the cluster instance, then the corresponding
  bit is set to 1, otherwise the bit is set to 0 (zero).
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var featureMap: https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Feature.html? { get }

- `


  ### [clusterRevision](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV15clusterRevisions6UInt16VSgvp)


  ` The revision of the server cluster specification supported by the cluster instance.
  Nullable: false.

  #### Declaration

  Swift

      @TraitAttribute
      var clusterRevision: UInt16? { get }

- `


  ### [identifier](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV10identifierSSvpZ)


  ` The trait identifier.

  #### Declaration

  Swift

      static var identifier: String { get }

- `


  ### [encode(with:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV6encode4withy0aB3SDK0H7EncoderC_tKF)


  ` Writes this object to the given `TraitEncoder`.
  Throws `HomeError.encodingFailed` if the data could not be encoded.

  #### Declaration

  Swift

      func encode(with encoder: TraitEncoder) throws

- `


  ### [==(_:_:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV2eeoiySbAG_AGtFZ)


  ` Returns a Boolean value indicating whether two values are equal.

  Equality is the inverse of inequality. For any values `a` and `b`,
  `a == b` implies that `a != b` is `false`.

  #### Declaration

  Swift

      static func == (lhs: https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait.html.Attributes, rhs: https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait.html.Attributes) -> Bool

  #### Parameters

  |---|---|
  | ` lhs ` | A value to compare. |
  | ` rhs ` | Another value to compare. |

- `


  ### [hash(into:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/Pm25ConcentrationMeasurementTrait/Attributes#/s:15GoogleHomeTypes6MatterO33Pm25ConcentrationMeasurementTraitV10AttributesV4hash4intoys6HasherVz_tF)


  ` Hashes the essential components of this value by feeding them into the
  given hasher.

  Implement this method to conform to the `Hashable` protocol. The
  components used for hashing must be the same as the components compared
  in your type's `==` operator implementation. Call `hasher.combine(_:)`
  with each of these components.
  Important

  In your implementation of `hash(into:)`,
  don't call `finalize()` on the `hasher` instance provided,
  or replace it with a different instance.
  Doing so may become a compile-time error in the future.

  #### Declaration

  Swift

      func hash(into hasher: inout Hasher)