0:32 this reminds me of The Fire Panel’s inspection of that elementary school with Siemens mechanical horn strobes along with the UMMT’s! Awesome video!
This is like Heritage Hills High School. It has the same alarms, Siemens Mechanical Horns, and System Sensor Spectralert Advances, but both were on continuous. Here at this middle school in this video, Siemens Mechanical Horns were on continuous, but System Sensor Spectralert Advances were on code 3.
Ahh yes! Siemens UHN-H-S17 Horn/Strobes. Utilizing faraday 6226 horns. I didn't necessarily grow up with these ones but rather Gentex GMS's. Basically SHG's but with the same exact horns as these! Also on continuous. Thats one reason I really like these and their brothers the UHN-MCS. Nice video!
Based off the sync pattern, I think this is wheelock sync. With wheelock sync, every 1 out of 4 pulses does a double pulse. The irony is that the darn wheelock alarms weren't even synced.
These are the Same horns. Simplex used Siemens devices quite often. All of the 4903-92xx and 94xx models all used Faraday/Siemens Horns. Just rebranded. Simplex also used The Pyrotronics Electronic 8 tone models too(UMMT now) which was the 4901-9839 and the 4901-9841 Line of Horns. Which Had 12 holes on the grille instead of the 9838 models, which only had 3 per corner and had the same tones as the UMMT Line from Siemens
Same here! Though with what's explained in the description with the new panel being voice evac capable, these alarms might be getting replaced in the near future unfortunately, but we will see.
My guess is that they’re running off 2 wire mode. This causes the horn and the strobe to activate at the same time causing a jump in the horn voltage. By cutting off a resistor on the back of the alarm makes it 4 wire mode. Where the horn and the strobe are powered separately.
![Sirens doing weird or unusual things compilation - PART 2 [TAKE 2]](http://i.ytimg.com/vi/wza32m0sIxY/mqdefault.jpg)
You dont understand how fast I clicked on this video. I am a die-hard fan of Siemens horn-strobes lmao
That’s my top favorite fire alarms! Siemens fire alarm fan. They are so cool.
0:32 this reminds me of The Fire Panel’s inspection of that elementary school with Siemens mechanical horn strobes along with the UMMT’s! Awesome video!
This is like Heritage Hills High School. It has the same alarms, Siemens Mechanical Horns, and System Sensor Spectralert Advances, but both were on continuous. Here at this middle school in this video, Siemens Mechanical Horns were on continuous, but System Sensor Spectralert Advances were on code 3.
OMG! I remember those videos from Firenut101! I wonder if that system is still there.
@ I’m sorry if I didn’t understand, you would what if the system is still there?
@@ImarisYT Crud, I meant to say wonder not would. Probably the autocorrect.
@@zachzebra56 Oh! Okay I see.
Are there any Ummts? Most of these old Siemens horns get replaced or added with these alarms.
Gotta love them old mechanical horns
Ahh yes! Siemens UHN-H-S17 Horn/Strobes. Utilizing faraday 6226 horns. I didn't necessarily grow up with these ones but rather Gentex GMS's. Basically SHG's but with the same exact horns as these! Also on continuous. Thats one reason I really like these and their brothers the UHN-MCS. Nice video!
Mechanical horns sound the best on continuous
That horn at 3:05 looks like a smaller model
It’s broken lol. The edges of the plastic part are all snapped off
@@FourtyFiftyEightyANGRY HORNS ON WIRES 👿
Probably with the lack of a wire cage around the alarm in a gymnasium, that's probably why it's all damaged like that.
@johndeerefan725 Yes
@@johndeerefan725It kinda looks like an advance from upfront
The sync protocol going through these always drives me nuts
@@officialsimplexguy same. Classic crappy SK install
@@FourtyFiftyEighty GOOD
Based off the sync pattern, I think this is wheelock sync. With wheelock sync, every 1 out of 4 pulses does a double pulse.
The irony is that the darn wheelock alarms weren't even synced.
@@FriedWill1 Real
I learned that Wheelock sync can fry a SpectrAlert advance and break the code 3 tone. It happened to mine.
Very nice! Sounds like the Syncable 4903-940X Electromechanical Horn Strobes on Continuous
These are the Same horns. Simplex used Siemens devices quite often. All of the 4903-92xx and 94xx models all used Faraday/Siemens Horns. Just rebranded. Simplex also used The Pyrotronics Electronic 8 tone models too(UMMT now) which was the 4901-9839 and the 4901-9841 Line of Horns. Which Had 12 holes on the grille instead of the 9838 models, which only had 3 per corner and had the same tones as the UMMT Line from Siemens
Nice Alarms and Video!
Very good
The alarms at the beginning kinda remind me of the Wheelock 7002t’s
Sounds like they're on Wheelock sync.
Siemens UHN
Wheelock MIZ
System sensor advance
Wheelock NS
The sync is similar to a 7000-2T, But slower
Im suprised they didn’t replace the older horns with the UMMT horn strobes.
That'd be cool if they did replace the older Horn/Strobes with Siemens.
It’s ironic that the non-syncable devices are getting a sync signal but the syncable devices (the Wheelock NSs are not).
This system is almost the same one as being shown in a different fire alarm inspection video uploaded by the same user
So this is why the world would sound like if bee’s took over!
Surprisingly healthy-sounding horns! Let's hope these don't get replaced
Same here! Though with what's explained in the description with the new panel being voice evac capable, these alarms might be getting replaced in the near future unfortunately, but we will see.
They sound very good to be old alarms! ❤
Nice!
I can see some have been replaced with Wheelock ns an spectralert advance
I think the advance replaced a broken NS
@@bjthedjdutchdude1992More like it replaced a broken Siemens
@0:41 code violation
The door being propped open?
@@CosmeReese-f2lno. I mean the visibility to the alarm is blocked by the locker
those mechanical horns sound almost like a 7002T
lol gotta love how they’re skipping like 7002Ts. Wonder why that is
My guess is that they’re running off 2 wire mode. This causes the horn and the strobe to activate at the same time causing a jump in the horn voltage. By cutting off a resistor on the back of the alarm makes it 4 wire mode. Where the horn and the strobe are powered separately.
@@DivanCelloThey're being run off of a sync protocol they're not designed for
00:40 One fire door shouldn't be open when one's closed
It's stuck
almost as quick as a 2001
@@acutemadness nah not even close. 2001 is nearly instant
did i see a motor horn in the gym
@@vintagesimplexfirealarmsof6440 nope
Check One Nice