---
title: "readAttributeInt48s(completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclustertestcluster/readattributeint48s(completionhandler:)"
---

# readAttributeInt48s(completionHandler:)

## Declaration

```swift
func readAttributeInt48s(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)
```

```swift
func readAttributeInt48s() async throws -> NSNumber
```