<!--
{
  "availability" : [
    "iOS: 27.0.0 -",
    "iPadOS: 27.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "SensorKit",
  "identifier" : "/documentation/SensorKit/SRFetchResponse/sourceDevice",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "SensorKit"
    ],
    "preciseIdentifier" : "s:9SensorKit15SRFetchResponseV12sourceDeviceSo08SRSourceF0CSgvp"
  },
  "title" : "sourceDevice"
}
-->

# sourceDevice

The source of the sample data.

```
var sourceDevice: SRSourceDevice? { get }
```

## Discussion

Represents the peripheral supplying data. Useful for distinguishing
multiple source peripherals using a common device. Is nullable
when no source information is available when providing sample data.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)