Redirect to:

This page is a redirect. The following categories are used to track and monitor this redirect:

From a page move: This is a redirect from a page that has been moved (renamed). This page was kept as a redirect to avoid breaking links, both internal and external, that may have been made to the old page name.

From an abbreviation: This is a redirect from an abbreviation to a related topic, such as the expansion of the abbreviation. Use this template for any length reduction other than the following.
- Instead of this template:
  - use {{R from acronym}} for abbreviations that are pronounced as words, such as NATO and RADAR;
  - use {{R from initialism}} for those abbreviations that are pronounced as letters, such as CIA and HIV;
  - use {{R from short name}} for the initials of a person's name or for any other length reduction that is not typically classed as an abbreviation.

When appropriate, protection levels are automatically sensed, described and categorized.

PID controller