EST G1R-CVM Category : EST/Edwards Really no difference between this and my other EST G1R-CVM. Brand EST/EdwardsModel G1R-CVMManufacturer ESTType Alarm (Chime/Strobe)
Grinnell TFX-912P Category : GrinnellJust like the rest of my Grinnell equipment, this smoke detector is from Brigham Young University.