---
title: "armFailSafe(with:expectedValues:expectedValueInterval:completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrclustergeneralcommissioning/armfailsafe(with:expectedvalues:expectedvalueinterval:completionhandler:)"
---

# armFailSafe(with:expectedValues:expectedValueInterval:completionHandler:)

## Declaration

```swift
func armFailSafe(with params: MTRGeneralCommissioningClusterArmFailSafeParams, expectedValues expectedDataValueDictionaries: [[String : Any]]?, expectedValueInterval expectedValueIntervalMs: NSNumber?, completionHandler: @escaping @Sendable (MTRGeneralCommissioningClusterArmFailSafeResponseParams?, (any Error)?) -> Void)
```

```swift
func armFailSafe(with params: MTRGeneralCommissioningClusterArmFailSafeParams, expectedValues expectedDataValueDictionaries: [[String : Any]]?, expectedValueInterval expectedValueIntervalMs: NSNumber?) async throws -> MTRGeneralCommissioningClusterArmFailSafeResponseParams
```