# Device and Life Cycle States

This documentation uses the concepts of device state and life cycle state (LCS) throughout.The short forms for the device states use of a suffix of *_STATE, as in EH_STATE. The LCS acronym and these abbreviations are used for convenience in the documentation and typically do not refer to anything in any provided code. The meanings of the terms are described in detail in the document, but the "Device States and Life Cycle States" figure gives an overview of their use and how the device states and life cycle states relate to each other.

Figure: Device States and Life Cycle States

As a reminder, for the purposes of this document, "device manufacturer" typically refers to an RSL15 user who would be building their own application, but in some circumstances the words can refer to other parts of the supply chain.

For more information about this topic, see: