---
title: clusterSmokeCOAlarmAttributeExpressedStateID
framework: matter
role: symbol
role_heading: Type Property
path: matter/mtrattributeidtype/clustersmokecoalarmattributeexpressedstateid
---

# clusterSmokeCOAlarmAttributeExpressedStateID

## Declaration

```swift
static var clusterSmokeCOAlarmAttributeExpressedStateID: MTRAttributeIDType { get }
```