---
title: SetDeviceIdlePolicy
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbinterfaceinterface942/2977245-setdeviceidlepolicy
---

# SetDeviceIdlePolicy

## Declaration

```occ
IOReturn (*SetDeviceIdlePolicy)(void *self, UInt32 deviceIdleTimeout);
```