---
title: "readAttributeMeasured3rdHarmonicCurrent(completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterelectricalmeasurement/readattributemeasured3rdharmoniccurrent(completionhandler:)"
---

# readAttributeMeasured3rdHarmonicCurrent(completionHandler:)

## Declaration

```swift
func readAttributeMeasured3rdHarmonicCurrent(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)
```

```swift
func readAttributeMeasured3rdHarmonicCurrent() async throws -> NSNumber
```