Plymouth Arts & Recreation Complex (Plymouth) - This is probably among some of my favorite mixes of devices I’ve ever seen in the wild. Casually known as the PARC, this building served as the original Plymouth High School until 1970, then was converted to Central Middle School before closing in 2015 (most likely) in favor of a new middle school in Canton Township. Since that time, the property was taken over by a non-profit organization which converted the school into a mixed-use arts and recreation center. Most of the devices that I describe here are available for viewing in a 360-degree Google Street View virtual tour that a user created.
The main academic building was constructed in 1917; the current gymnasium, pool, and music room wings were added in 1951, and the last addition–commonly known as the “Annex”, came in the mid-1960s.
Annunciators/panel
<The current annunciators/panel are unknown, but presumably some kind of a National Time voice-evacuation panel (900 or 902-series) that may be tied into another panel.
<Given the devices I’m about to describe below, I’m guessing there was a Simplex panel that served as the electronic original control center for the system, but it most likely would have been added in the 1951 or mid-60s additions. According to some old fire evacuation plans still posted in some of the rooms, the signal coding for the old system consisted of “…a series of Claxton [sic] horns”, which suggests the panel may have been coded or set to a slow march time.
<Considering that the 1917 building is multi-story, it is plausible that there was a fire alarm pull-rod system in place at one time, but any traces of such a system are long gone.
Detectors:
<Gentex photoelectric/ionization detectors above elevator doors
Pull stations:
<National Time 641 devices throughout the building; there is one located inside The Z Spot Fitness Studio protected by a Sentry Manual cover, and is also the only pull station to have any sort of protection anywhere in the building.
<Interestingly, the 3rd floor of the 1917 wing contains remnants of a National Time 620M device; whether this replaced a broken pull station before or after a supposed Simplex system is completely unknown.
<All parts of the building have square/rectangular metal plates and/or backboxes over where the old pull stations used to be; while I don’t what devices (if any) were used in a pull-rod system, I would guess that the later electronic system used Simplex 4251-1 or 4263 coded or non-coded initiating devices.
Notification appliances:
<When the 1951 wing opened, Simplex 4037-2B horns were installed in that area as well as the 1917 wing (but possibly not both at the same time); most of these horns are still intact, but most have been painted over. The mid-1960s wing also had these same horns installed.
<There were also class change bells, too; most of them are gone, but still have the mounting plates intact. Given their design, I believe they were Standard Electric Time ASJ6 or MAJ6 models.
<In the Google virtual tour, the first floor of the 1917 wing had an exhibit by the Plymouth-Canton Community Schools district showcasing the building’s history, which included two Standard Electric ASJ6/MAJ6 bells as well as a newer Edwards 340 4" Adaptabel! Sadly, this exhibit was gone when I visited the building.
<Outside, above the boiler room on an exterior wall facing north, there are two bells still in place; one is 6", while the other is 10". Both of these were mounted too high up for me to ID them, but I’m guessing they were Standard Electric devices, with one of them likely being used for the boiler room.
<The current system throughout most of the building consists of SSPK-9070W speaker/strobes, presumably rebranded by National Time under their own model. Many of these are weathered from age, and all of them have non-ADA strobes! They are also sparsely-placed, too; most of the classrooms–including the bathrooms, stairwells, and other places–do not have any sort of NAs inside them. Some of these speaker/strobes were wall-mounted over the old 4037-2B horns, interestingly enough.
<Weirdly enough, the Annex along with the 3rd floor of the 1917 wing contain National Time 624W-AV horn/strobes (rebranded from Faraday) mixed in with the SSPK-9070Ws. Even more weird is that these particular alarms don’t appear anywhere else in the building.
<Some of the SSPK-9070Ws broke over time and were replaced either with white National Time C4-series horn/strobes, or in the case of the men’s locker room, a red National Time C2/C3-series horn/strobe (rebranded Gentex Commander) that replaced a wall-mount SSPK-9070W. The main hallway of the 1951 wing has red C4-series horn/strobes replacing the SSPK-9070Ws and nowhere else.
<The third floor of the 1917 wing has one red Simplex 2901-9322 bell near a 624W-AV for some odd reason; whether this was used as a trouble bell or even a class change bell is completely unknown.
<According to the Google virtual tour, the Jack Wilcox Theatre (the 1917 wing’s auditorium space) used to have a National Time-branded Wheelock 7002T horn/strobe on the eastern wall. As part of a renovation project, it was removed and replaced by several white C4-series horn/strobes on the ceiling.
<Finally, the main hallway of the 1951 wing still contains remnants of a Standard Electric ASJ6/MAJ6 next to a projector horn! The projector cone is a Federal Signal P2R, while the horn itself is unknown–most likely a Simplex 4040 or 4050. Both of these are mounted on a rectangular plate.
Crazy system, isn’t it? 
