Simplex 4904-9105

Category : Grinnell

I’m almost certain that this unit has an actual “Grinnell” model number, not just the standard RSG one, but it’s...

Category : Simplex

Oddly enough, the model number on this particular smoke doesn’t fit the typical pattern for Simplex devices.

Category : Space Age Electronics

I’m pretty sure that the horn on this unit is made by Space Age Electronics. Otherwise, it’s probably a Wheelock...