What's in the Windows IoT Extension SDK API contracts for UWP

This post exists to list information no longer documented by Microsoft.

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Extension SDKs let you call specialized APIs for specific devices. To read more about this, see the Device families overview.

This page contains a list of the API contracts in the Windows Internet of Things (IoT) Extension SDK for the Universal Windows Platform (UWP).

 [!IMPORTANT]

Applications that target version 10.0.17763.0 should delete references to the IoT Extension SDK to avoid build breaks.

Version 10.0.17763.0

In the October 2018 Update (version 10.0.17763.0) all IoT contracts were moved into the Windows Universal SDK.

Version 10.0.17134.1

Windows.System.SystemManagementContract, version=5.0

Version 10.0.16299.0

Windows.System.SystemManagementContract, version=4.0

Version 10.0.15063.0

Windows.System.SystemManagementContract, version=3.0

Version 10.0.14393.0

Windows.System.SystemManagementContract, version 2.0

Version 10.0.10586.0

Windows.Devices.DevicesLowLevelContract, version 2.0 

Windows.System.SystemManagementContract, version 2.0

Version 10.0.10240.0

Windows.Devices.DevicesLowLevelContract, version 1.0

Windows.System.SystemManagementContract, version 1.0