Gamewell A8814 Category : Gamewell I have no idea what year this alarm is from, only that it’s old and heavy.
Simplex 4903-9101 Category : SimplexSince this is a ceiling-mount unit, it’s model number is probably different from 4903-9101, but I couldn’t figure out what...
Gaylord NC-1357A Category : GaylordThis is a rebranded EST/Edwards 270-SPO for use in some sort of ventilator system.