According to a friend of mine the Entergy Tower has a Honeywell FS90 with a Notifier System 500 attached, & that they’re apparently still there to this day (surprising I’d say given how long ago both the FS90 & System 500 were made), which means that the system in the video I just found & the system in the video that Mimi shared here would both be FS90s too (going by the mostly-similar whoop tones at least).
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