A new school which was Grandview Elementary School in Bloomington, Indiana built in August of 1998 has a Simplex system.
In 1998, the school had a existing Simplex 4903-9219 horn/strobes set on 15cd, a Simplex 4020 fire alarm panel and there were older Simplex 2098 Series TrueAlarms.
Unknown year, a smoke detector broke, so SimplexGrinnell had to replace the older 2098 series smoke detector with a newer TrueAlarm 4098-9613.
Unknown year, a 4903-9219 horn/strobe, which the horn died, so SimplexGrinnell had to come for another service call again and replaced it with a Wheelock AS.
TO BE CONTINUED!