---
title: MTRCarbonMonoxideConcentrationMeasurementMeasurementUnit.NGM3
framework: matter
role: symbol
role_heading: Case
path: matter/mtrcarbonmonoxideconcentrationmeasurementmeasurementunit/ngm3
---

# MTRCarbonMonoxideConcentrationMeasurementMeasurementUnit.NGM3

## Declaration

```swift
case NGM3
```