Neat system for sure, especially given how many different kinds of smoke detectors there are in it!
You’ve got the last part backwards: it’s a 9201.
That’s actually a smoke/heat detector (specifically the smoke/heat version of the 2098-9201).
That’s also a smoke/heat detector (a 4098-9602 more than likely) owing to the small “cone” sticking out of the very bottom/top of the detector head, which is the heat sensor.
I have to wonder what caused that weird out-of-place horizontal tile to be put there…
Quite the uncommon combo for sure! (since I believe by the time the 4903-series of light & strobe plates went into production the 2901-9838 was the standard Simplex electromechanical horn going by how often they’re installed with 4903s)
They also moved the P2RL horn/strobe and Faraday F1GT Chevron from their previous locations (mounted on adapter devices where the original Standard Electric Time equipment was) and wired them directly to the annunciator as part of installing a new drop ceiling. In the areas with addressable devices, the NBG-12LX pulls now blink green, as opposed to red when the Student Union had an AFP-200 panel with the CLIP protocol.
You mean the cardboard “NOT IN SERVICE” sign? It’s actually covering up what’s left of the Notifier AFP-200 panel. That Standard Electric Time “Alarmatic” panel had already been gutted and configured for terminal wiring when the AFP-200 was installed in the late 1990s and it’s still kind of obvious it’s being used for that (the controls being removed and visible wiring through the openings).
My elementary school had an odd system: Spectralert Classics on continuous, with an odd high-low played over the PA system. It went high-lowwwww high-lowwwwwww. If anyone knows why it was setup this way, let me know