What rare combo of fire alarms have you seen in a building?

Well, me and my family do a semi large amount of traveling. Well, one time we went to a Fairfield that was run down and needed some renovation (the building has those old studio ceiling tiles in several of the hallways, and it looked like the 1960s. Well, in the main lobby a 2001 system was tied to a Fire-Lite Miniscan. The buildings main pulls were BG-6s, and the alarms were 2903s with 2901-9833