Built 1994
Simplex 2901 Horn Strobes & remote strobes, throughout, i3 smoke detectors, Bg-12’s, all controlled by a MS5-UD
Based on what year this was built, and having 2901’s I bet that the original panel was a simplex something, because the MS5-UD came out around 2008, esp with the 2901’s.
I have discovered some more devices in my school, inside a closet while grabbing supplies. One of these things is a red box, Edwards branded that has “FIRE ALARM” written on it in sharpie, and a hole with the label “RESET” anyone know what this is? I’ve been told that many people have accidentally hit it before and it set off the alarm, so it could be an initiating device of some kind.
I also found the amplifiers for the HyperSpike speakers in the main gym + auditorium, which is marked “FIRE ALARM AUDIO CABINET FOR AUDITORIUM AND PURPLE GYM FIRE ALARM SPEAKERS”. I think this is the HyperSpike amplifier since all amplifiers for the normal speaker strobes are EST power supplies, but these are DuKane amps. Below is a picture of the amplifiers and the HyperSpike speaker in the auditorium.
I don’t think Simplex ever made an outdoor conventional speaker strobe. Assuming this is outdoor, that’s a fail!
Surprisingly, this is in an auditorium with a painted stone wall. It’s hard to tell with my poor photo. It’s in the same room as the horn and bell behind that grate in the last photo that are unused now.
I don’t remember exactly but I believe these are the annunciator’s labels (exact order is unknown):
These photos are from the Pepsi All Seasons Arena, which is located directly next to where my district’s old high school was. Here is the system’s description:
The system hasn’t really changed since I wrote that description around a year ago, but the Cerberus Pyrotronics MS-51 pull station in the lobby did get replaced with a new Siemens MS-151 pull station at some point in the last 1 1/2 years since I’ve been in this building. If you’re not familiar with that model number, it’s one of these:
I was surprised to learn that they are still making these, and that my local Siemens dealer still stocks up on them.
I found a 3D tour of an abandoned school and found the following:
Painted 270 SPO
Several of these unidentified horns
What looks like an actuator switch which could have been attached to a pull rod bell along with a class change bell.
Standard Electric Time model 50 iirc. Some look to be the single projector version as well
This is the music building on this college campus. This college uses (and always has used) exclusively Simplex fire alarm systems. This building was opened in 1992. At some point in the last year, the system was upgraded to an addressable system, but the old notification appliances were kept.
Panel: Likely either a Simplex 4002 or conventional 4100 (replaced with 4100ES in 2025)
Notification Appliances: Simplex 2901-9838 horns on 4903-9101 strobe plates
Here are some photos I found online that show them:
Pull Stations: Simplex 4251-20s (Replaced by 4099-9006 addressable pull stations in 2025)
Detectors: Simplex 2098-9202 smoke and heat detectors (Replaced by 4098-9714 addressable smoke detectors in 2025)
Annunciator: Silver incandescent Simplex annunciator similar to this one: (Not my image)
In 2025, the door was replaced with a metal plate, and a 4603-9101 was flush mounted on top of it.
Clock System: Surprisingly, they didn’t go with a Simplex clock system. Instead, they have a National Time and Signal clock system. The NATSCO system is still in use, and is still keeping accurate time to this day.
Here is a photo I found online of a clock and speaker combo that can be seen in most rooms:
Upstairs, some rooms have separate ceiling speakers and wall clocks. I’m not sure if the intercom system is still in use, or what it could be. If it is in use, I’ve never heard anything from it.
These two photos below are from Arno Gustin Hall, which is an auditorium that was opened in 1970. Although it is connected to the Clairmont Center, it is on a separate 4100ES system (that likely used to be a 4100+) for many other campus buildings that was installed a few years earlier. All of these other photos (including the one above) are from that system. These older devices under a grate are no longer used.
Ai enhanced, can’t be considered accurate
I don’t see how: it’s not an AI-generated image, only AI-enhanced, & I’ve seen the supposed original before & it looks basically the same (just blurrier/lower-res of course).
Fire sign is turned “led”
Well so what? It may have that kind of pattern on it in real life even if it’s not LED, & it’s otherwise based off an actual photograph.
I took some more photos today at a doctors office:
The main notification appliances were either Siemens SL2MTSWR-F multi-tone horn/strobes, or SL2SPSWR-F speaker/strobes. I would lean more towards the horn/strobes, as they are spaced quite far apart from each other.
The Simplex detector may be left over from the last system. Interestingly, it still has power. I really hope it’s not connected to the SLC, though, as that would just short the SLC if there is a fire and that detector goes into alarm. Hopefully the system would still work due to Siemens’ class-X SLC loops.
I spy a rare Soundolier P910 speaker in the photo with the L series speaker strobe
Looks like my image lol
Was the 4002 ever used with that annunciator?
It didn’t, wouldn’t you think Firecom would stick with the same style?
How do you know: have you seen whatever panel that is in real life? No one has as far as I know (except the person who took that photograph of course but we have no idea who they are). In any case though, it’s still based off an actual photograph, & that should be fine (heck if anything why don’t you stop complaining about someone simply attempting to make that photograph look nicer & better & just refer to the original if it bothers you that much?).
Alright…
A friend of mine says that it’s actually an Edwards/EST IRC-3 instead.
@Tesla_railfaning Could you tell us where you got that higher-res photo from? (since to me the original looks way too low-res & blurry for any AI to enhance to the extent that the higher-res one is like)
