---
title: "readAttributeHardwareVersionString(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterbasicinformation/readattributehardwareversionstring(completion:)"
---

# readAttributeHardwareVersionString(completion:)

## Declaration

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

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