s219

S219 is an alphanumeric designation used in several independent contexts. It does not correspond to a single entity, but rather serves as a short code within different systems to label routes, models, or records.

In public transportation and road networks, S219 may designate a specific route, service, or road segment. The meaning depends on the locale and timetable, as many cities and regions assign 'S' as a prefix for certain suburban or secondary services, followed by the number 219. Because routes are periodically updated, the exact identity of S219 can change over time.

In consumer electronics, industrial equipment, and catalog systems, S219 often appears as a model or part number. In such cases, the specifications, compatibility, and manufacturer differ by product line, so S219 has to be interpreted in the context of accompanying documentation or labeling.

In academic or standards records, S219 can serve as a specimen identifier, dataset code, or internal reference. It is not a universal standard and should be interpreted within the project or standards framework in which it appears.

Because S219 spans multiple domains, disambiguation relies on contextual clues such as the field, organization, or geographic region. If a specific use is needed, providing additional context will help identify the exact item referred to by S219.