---
title: "readAttributeBatANSIDesignation(completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterpowersource/readattributebatansidesignation(completionhandler:)"
---

# readAttributeBatANSIDesignation(completionHandler:)

## Declaration

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

```swift
func readAttributeBatANSIDesignation() async throws -> String
```