Probably some sort of pre-alarm synchronization?
I’m thinking it was some sort of pre-alarm function, but it wouldn’t make sense because the strobes weren’t synchronized, and the horns were set on continuous.
It’s horn sync the chirp is it waiting to turn on with the other horns
Why would a continuous horn need synchronization?
Oh it’s continuse then strobes Maybe
Oh whoops I need to read more carefully
Main Hall at Middlesex County College in Edison, NJ is an example of this. The hallways have Simplex 4903 rectangular horn/strobes (not sure what model exactly but I believe they’re electronic), while there are Wheelock NS horn/strobes in the classrooms and bathrooms.
My school is also an example of this. The NA’s in th hallway and larger classrooms (like the art, , band, etc. rooms) are a mix of Gentex SHG’s and Commanders, and most of the regular classrooms have Gentex GX-90’s.
I always thought it was directly part of the system, but just had different alarms for some reason, but now that you mention it, it was probably a door alarm that was set to activate the fire alarm system.
Over here, most door alarms aren’t linked to the fire alarm system so I find it a little weird that it can be done.
It would make since because those doors are made for fire escape only
The only problem with that is unlike localized door alarms, if the door is opened, and the system activates, everyone near the door does not focus their attention to the door, just to the alarms.
You can look at this a few different ways. Take a school setting into consideration. Connecting the “fire exit” to the fire door takes away the action of needing to pull an alarm or wait for a smoke to catch it. If the person who opens the door has the intent of letting someone into the school you now have a problem, as if the door is out of the way say down a back hall you have just created a significant distraction.
Add cameras into the mix, you can view who used the fire door and if anyone came in during the evacuation and you remove the security risk.
Typically there is no “door alarm” on these doors. The push/panic bar has an unlock delay of a few seconds, once the delay expires the system trips, as its hard wired into the bar or door contacts.
In some cases the doors cause a supervisory or other type alarm at the panel which can be checked out by say, security or campus police. This prevents dumping the building as well as doors being propped or local alarms being disabled or damaged.
I did a system a while back that would cause a burg. zone to trip on a panel in a campus police office, however it would trip a local horn at the door. No fire alarm to set off, no door being left propped, and camera footage could be reviewed. It was a nice solution to a significant security issue in a woman’s dorm.
- And that would be connecting the “fire exit” to the fire alarm, not fire door. I guess even proofreading fails sometimes
Haha, that’s why we need a solution to edit button suggestion.
What do you mean by “dumping”?
That’s how a lot of Lowe’s seem to be setup. Mine has blue Commander 2’s or 3’s (I can’t tell) by the fire exits.
here its gray unmarked edwards adapta horn
By dumping a building, it means to “evacuate” the building.
Oh, I wasn’t sure.
Well I did not mean pick it up and dump it out 