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# Service Power Capabilities

Constants that indicate the power state of a device.

## Topics

### Getting the Power Levels

[`kIOServicePowerCapabilityOff`](/documentation/DriverKit/kIOServicePowerCapabilityOff)

The device is entering the sleep state.

[`kIOServicePowerCapabilityOn`](/documentation/DriverKit/kIOServicePowerCapabilityOn)

The device is fully powered.

[`kIOServicePowerCapabilityLow`](/documentation/DriverKit/kIOServicePowerCapabilityLow)

The device is in a reduced power state, but the system is running.


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