Really curious. I want to make a system with those chimes on roblox studio
That’s the chime tone emitted by a Firecom 8500 voice system, which we know very little about (other than 7 WTC had one).
Wtc 7 had a firecom 8500 system
(Edit for things I forgot to mention)
There’s all kinds of info here:
This PDF has detailed info on the FA systems before & after. I worked for the service company back in 1987 through '93 and assisted with the install of some of those XL3 panels in the mechanical rooms. I moved to FL shortly after and then back to NYC in May 2001 for the same service company that was maintaining the MXLVs. I’ll never forget that day.
That was helpful