<!--
{
  "availability" : [
    "iOS: 17.6.0 -",
    "iPadOS: 17.6.0 -",
    "macCatalyst: 17.6.0 -",
    "macOS: 14.6.0 -",
    "tvOS: 17.6.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 10.6.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Matter",
  "identifier" : "/documentation/Matter/MTRClusterSmokeCOAlarm/selfTestRequest(with:expectedValues:expectedValueInterval:completion:)",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "Matter"
    ],
    "preciseIdentifier" : "c:objc(cs)MTRClusterSmokeCOAlarm(im)selfTestRequestWithParams:expectedValues:expectedValueInterval:completion:"
  },
  "title" : "selfTestRequest(with:expectedValues:expectedValueInterval:completion:)"
}
-->

# selfTestRequest(with:expectedValues:expectedValueInterval:completion:)

```
func selfTestRequest(with params: MTRSmokeCOAlarmClusterSelfTestRequestParams?, expectedValues expectedDataValueDictionaries: [[String : Any]]?, expectedValueInterval expectedValueIntervalMs: NSNumber?, completion: @escaping @Sendable ((any Error)?) -> Void)
```

---

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)