---
title: MTRNitrogenDioxideConcentrationMeasurementLevelValue.critical
framework: matter
role: symbol
role_heading: Case
path: matter/mtrnitrogendioxideconcentrationmeasurementlevelvalue/critical
---

# MTRNitrogenDioxideConcentrationMeasurementLevelValue.critical

## Declaration

```swift
case critical
```