Here is a middle school that is sort of a mix between NewAgeServer’s Middle/Jr. High School and Massasoit Community College that wile_e2005 goes to.
This school was originally built in 1959 with Edwards single stroke bells along with Edwards coded bells.
But twenty years later (1979), they completely replaced the entire system with a 2001 system with 4051’s on 4050-80 light plates with the pulls being 4251-20’s along with only one 4251-30 by an exit. The panel was set on 90 BPM march time.
Then sometime in the 80’s, a new wing was added. The signals were 2903+2901-9806’s. They also replaced the 4051+80’s in the cafeteria.
But in the mid 1980’s, the 2001 was replaced by a 4002 and it did continuous. At the same time, they have added an SAE 2DCD on a V33 light plate in the home economics classroom.
In that same year, they replaced a 4051+80 and it’s backbox from the janitors’ room with a Wheelock 7002T w/o the trim plate.
In the early 90’s, the lights on the 2903 light plates in the corridors blew out and they were replaced by 4903-9101 strobe plates. They kept the 9806’s on there. A few years later, the classrooms in that corridor have 2901-9838’s on 4903-9101 strobe plates.
In 1994, 4051+80’s in the gym were replaced by -9838s on -9501 strobe plates.
Then in 1995, BIG CHANGES. They replaced about 95% of all 4051+80’s with 4903-9237’s. The bathrooms and most classrooms have 4903-9219’s. Then someone got lazy and put a 9219 that replaced the 9806 on one of the 9101 plates and disconnected the strobe on that 9101 strobe plate. They just wanted to save money. The 4251’s in the gym, and some of them in the halls, have been replaced by 2099-9754’s.
Then in 1998, they replaced the 4051+80’s in the locker rooms with Gentex GMS’s.
In that same year, they have replaced the 4051+80 in the music room with a Gentex GOS horn/strobe set to 800Hz Steady tone.
Then in 2001, they have replaced the art rooms’ 4051+80’s with SAE VA4 Horn/Strobes.
Two years later the 4002 was replaced with a 4005 still programmed for continuous and a TrueAlert (4903-9426) replaced a 4051+80 in the band room.
Then in 2007, there was a sort of a major upgrade. The remaining 4051+80’s were replaced by newer Wheelock MT horn/strobes (more specifically, the Wheelock MT-241575W-FR) set to high volume continuous horn, a TrueAlert (4903-9426 again) has replaced the SAE 2DCD+V33 in the home economics room, then about more than 50% of all the 4251-20’s were replaced by newer 2099-9756’s, then they have added weatherproof SpectrAlert Advances outside. The outdoor alarms do code 3 and the indoor alarms do continuous. The lone 4251-30 was kept and the 4251’s that were being taken down and being replaced ended up being sold on eBay.
I’m very sorry NewAgeServer if I kinda copied your Jr. High/Middle School System but that school’s alarm system inspired me of this system.