Simplex 2098-9209 This is a photoelectric smoke detector. Brand SimplexModel 2098-9209Manufacturer HochikiType Smoke Detector
Simplex 636-820 Category : SimplexThis is the Simplex 4010 user interface which was taken out of a broken 4010.
Gamewell A8814 Category : GamewellI have no idea what year this alarm is from, only that it’s old and heavy.
Gentex GX90S-4-15/75WR Category : GentexI also have the version of this alarm that is rebranded by Simplex.