I love the one System Sensor Mass and Spectralert that are just randomly in the system.

Perfect day for this video! There was a false fire alarm at school a few days ago... everyone had a heart attack since it was right when we got to class. And me being a fire alarm nerd went slower than everyone else... checking to see if the alarms were working right. Yep, that’s me 😂 Cool video by the way, I subscribed

The mix of electromechanical 4903 and TrueAlert horn/strobes reminds me of the campus center at my friend's university; they had a Simplex 4100 system installed in the mid-90s set up as conventional (replacing an old Standard system from 1971), and when a few areas were renovated during the 2000s they put in TrueAlert horn/strobes and addressable initiating devices. But then when they renovated the main lobby and above floors there, they replaced the 4100 with a Simplex 4100ES voice-evac panel, with TrueAlert speaker/strobes installed in said renovated area, while the other parts of the building still have the electromechanical 4903 and TrueAlert horn/strobes (along with the conventional initiating devices in the areas with 4903s)! A rather unusual system now for sure.

My first elementary school (now a K-8 school) actually still has a Simplex 4010 panel. It was installed around the mid-2000s, tied into the school's original Simplex 4208 panel from 1974 (the 4010 was replacing a 4004 installed in 1998, which in turn replaced a Simplex 4002 installed in the late 80s or early 90s for added-on duct detectors.) The 4010 was for main controls, the duct detectors, signal coding and the modular building, while the 4208 was used for the existing pull stations, heat sensors and an old ionization smoke detector. They had Simplex 4051+4050-80 horn/lights, but they used 120-VAC light plates for some reason, and while the NACs on the 4010 would code the signals (Slow March Time), they had to run through the 4208 to provide the AC power for the lights (while the horns were 24-VDC.) But in early 2015, the Simplex 4208 panel started failing (sometimes the signal circuits wouldn't work in a certain zone, or the system would randomly go into alarm), so during the February break they gutted the 4208, wired everything into the 4010, replaced the old 4208 battery cabinet with a couple of EST booster power panels, and replaced all alarm signals with SpectrAlert Advance horn/strobes (they even replaced the Wheelock MT-24-LSMs in the modular with Advances!) But at least my city's school district considers faulty/malfunctioning fire alarm systems a top priority on their agendas!

I love all the mechanics fire alarms

Wow! I absolutly love this! Good job, Billy!

i like that the doors actually closed together.

I used to watch fire alarm videos when I was like 5, just here for some nostalgia

I love the intro music.

Nice video! I won’t be able to do this in my high school because it’s getting torn down and I’ll be away at college then. Although, a local elementary school in my district is being torn down in late June or early July though and I am going to be acquiring that school’s old system as it is up for auction and I have put a high bid on it. 4005 control panel, and 2903 strobe plates with 9838 horns behind them for A/V’s. Pulls are a variety of 4251-20’s, a couple 2099’s, and some old Simplex local alarm “Chevron” metal pull stations from the 50’s.

This walk test was crazy!

Love those system sensor chimes and the federal signals units! Way cool!

Boy, SmartSync and conventional don't mix too well. All the older devices sound very healthy though! Great vid!

Hi, I'm an alarm technician from Russia. Very interesting to see your systems

Its like the horns are playing a game of "who is the loudest lol.

Alarms: Simplex 4906-9127's Simplex 4903's (9236, 9219) Federal signal 450D's System Sensor Spectralert Classic System Sensor MA/SS 24 set on 800Hz Coding (during the Bell Test): Continuous (Code 3 for the Truealerts)

I like the flat head in the Phillips on the autocall also love the mass and the specralert

i was here on the premire!

What's up with the two System Sensors? Who would install those?

I love the mixed systems!

Ya yeet 1st day of summer break and you’re gonna make a video, yay!

I just got up at 5:30 and I’m setting the reminder now.

Looked like Federal Signal owned Autocall during the time that system was made!

I'm surprised no one mentioned that rogue truealert going off when the relays clicked in the panel at 29:40

Beautiful System Sensor / Simplex System!!

I assume the 450Ds were the original alarm?

Awesome system!

Lucky! All the public schools I went to either had Genesis or Integrity lmao

I noticed how the alarms were sounding in sequences like 1-1-5, then 1-1-4, then 1-1-3, etc. Why is that? I've heard speakers be like, testing device "One One Nine". Just curious of what the numbers mean? Im guessing it's the device number and zone or something? So like zone 11, device 5 maybe?

Great video 😀👍👍

Why do they only sound for a few seconds? How did they make em do that?

Nice! Can’t wait!!

Wow Different Fire Alarms Noises

Were the alarms different and older then and got replaced with newer ones during expansions?

So any horn, Simplex or not, is compatible with a Simplex system? (Zoned and/or addressable) Also, explain the difference between zoned and addressable devices.

Me too!! And why in the world does this have dislikes!!??

Good job

Wow awesome

The 9237s must have replaced broken down 9219s

Why do the true alerts freak out like that?

It looks like those fs 450s are the original alarms

15:09 System Sensor Spectralert Classic

My elementary school had the autocall pull and this alarm 26:29 and i was tampering it in the bathroom and it went off and i was traumatized after it happened

6:04 The pulse pattern I noticed was - - •• Do the two short tones represent zero? (And therefore, would this be device 110?)

What is the model number of the device at 2:48 I know its one of sinplexs mechanical devices but just dont know the model number.

What does it mean if it goes for example 6-7-2

I am interested in the System Sensor MA/SS also

Nice

Question. Once the reset finished, why did the horns pulse?

Wow those 9219s are louder than true alerts and what coding is panel in

YES

Nice!👍👍

The first fire alarm sound, is the fire alarm at my school. Well one of them.

25:05 federal signal vibratone

So if I am understanding this correctly, the system is set on Continuous, with a sync module that governs the true alerts (hence why the true alerts are on Code 3, and kinda got jammed up during the Walk Test)? Also, was there not an annunciator in this school?

What’s with the inconsistent coding and the stuttering truealerts around mid video. Like some pulls are 2 chirps in march time and other devices code 3 but 1 chirp, chirp again then stutters the first of the 3 chirps in code 3 and completes it. And near the end of the video where all the horns are going rouge as far as timing and coding goes?

Is it bad when you reset the panel, the alarms do one short beep and then it resets. Is this a fault?

Why do the strobes blink so fast

3:16, 7:35, 7:41, 12:55, 13:23, 13:58, 14:23, 14:52, 15:05, 16:44, 17:26, 18:09, 18:21, 19:07, 19:33 Combination of new and old fire alarms. 12:07, 20:41, 21:02, 21:24 is an odd coding for walk test. 2 short beeps must be 0, so if the alarm goes 2-3-5, then that must be channel 2, device 35? System Sensor at 14:52 & 15:05 (28:31 is a MASS 24)

Why does the simplex trualert flashes a little faster

Why can the Simplex TrueAlert only do code 3?

School bell 18:36 20:06

Anybody know the model number of the truealerts that are blinking really quickly?

At least the newest electromechanical horns are the 9219s

So I’m looking at getting a 4100U or 4100ES but I live in Australia and Simplex here won’t sell to the general public and can’t find a used one here either. So I have had a look on eBay and I can find quite a few used ones in the US but I’m wondering if there would be differences between the Australian and US 4100s.

How do fire alarm do this

um.. They are broken.

You can make a video with the same test but in the Fire Panel Simplex4100ES

Hi Safetech, i was wondering, i want to make some animated fire alarm system video’s, i was wondering if it is ok if i use audio from your videos? I will credit you of course. I just want to know because you have some pretty good alarm audio

Cool alrm

At the elementary school that I went to, whenever the fire alarms went off, all I could hear was *WRRAAAAAA* (it was mechanical except for the flashing light at the top)

TrueAlerts were the last Simplex horns put it.

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That your old high school som of them are trying to do code 3

Nice video Phone 📱 📲 ☎️ 📞 📳 🤳 📱 And Fireman

And the newest alarm is obviously the System Sensor SpectrAlert

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Why do you show you’re feet