Is there a particular reference style that you use?

How would you want the citation to appear?

Zotero is obviously primarily focused on written works (although it also covers other media commonly referenced in academic work, such as video and audio).

There is an item type for Web Page, so you can save an equipment manufacturer's product page, and cite that when writing.

It is not uncommon to store reference, user or service manuals for equipment in Zotero. There is no specific item type for those, but Document is kind of the catch-all item type for such written works that don't have a more specific item type. Citing such a document is a relatively common way to refer to equipment in academic writing.

There is no current way for the user to add custom item types, as that would require modifying the database structure (or perhaps building a generic item type with user-specifiable attributes into a future database structure). Zotero developers add new item types quite rarely, for item types that get lots of requests.

Sounds like a good solution.
Thank you!