How can I add an "Enter" or a carriage (or a tab) return to the end output of an SREDKey (or a SecureKey)?

You can program a post-amble of "Enter" by sending the "53 D3 02 01 0D" command via our dotNet SDK Demo found on Universal Library for Visual Studio - Home - Knowledge Base - Confluence (atlassian.net) with the screenshot shown in the screenshot below:

To add a tab instead of entering 53 D3 02 01 09