---
title: "setClassOfDevice(_:forTimeInterval:)"
framework: IOBluetooth
role: symbol
role_heading: Instance Method
path: "iobluetooth/iobluetoothhostcontroller/setclassofdevice(_:fortimeinterval:)"
---

# setClassOfDevice(_:forTimeInterval:)

Sets the current class of device value, for the specified amount of time. Note that the time interval must be set and valid. The range of acceptable values is 30-120 seconds. Anything above or below will be rounded up, or down, as appropriate.

## Declaration

```swift
func setClassOfDevice(_ classOfDevice: BluetoothClassOfDevice, forTimeInterval seconds: TimeInterval) -> IOReturn
```

## Return Value

Return Value Returns the whether setting the class of device value was successful. 0 if success, error code otherwise.