---
title: MTRNitrogenDioxideConcentrationMeasurementMeasurementUnit.PM3
framework: matter
role: symbol
role_heading: Case
path: matter/mtrnitrogendioxideconcentrationmeasurementmeasurementunit/pm3
---

# MTRNitrogenDioxideConcentrationMeasurementMeasurementUnit.PM3

## Declaration

```swift
case PM3
```