Fire Alarms in Buildings (2.0)

Update:

Today was the last community open house for this building before the ownership is transferred to the senior center that is taking it over. I walked through the building, and I took some photos of the system. I also believe I now know the history of this building’s system much better:

Original (1960-1970s): Likely an Edwards AC system

Second (1970s-1990s): A Simplex 4207 or 4208 system

Third (1990s-late 2010s): EST system (likely an LSS4)

Fourth (Late 2010s-Current (maybe 2026?)): Fully addressable Simplex 4007ES system

I have no idea what will happen with the system now, or how much the building will be renovated. It’s possible that they will keep the existing system, and change it as needed, as it’s still an up-to-date system. If they do significant remodeling, it’s more likely that it will be fully replaced.