---
title: MTRTotalVolatileOrganicCompoundsConcentrationMeasurementLevelValue.unknown
framework: matter
role: symbol
role_heading: Case
path: matter/mtrtotalvolatileorganiccompoundsconcentrationmeasurementlevelvalue/unknown
---

# MTRTotalVolatileOrganicCompoundsConcentrationMeasurementLevelValue.unknown

## Declaration

```swift
case unknown
```