---
title: kIOPMThermalLevelUnknown
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1645015-anonymous/kiopmthermallevelunknown
---

# kIOPMThermalLevelUnknown

## Declaration

```occ
kIOPMThermalLevelUnknown = 255
```