---
title: "readAttributeHarmonicPhases(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterelectricalpowermeasurement/readattributeharmonicphases(completion:)"
---

# readAttributeHarmonicPhases(completion:)

## Declaration

```swift
func readAttributeHarmonicPhases(completion: @escaping @Sendable ([Any]?, (any Error)?) -> Void)
```

```swift
func readAttributeHarmonicPhases() async throws -> [Any]
```