Simplex 2098-9508 Category : Simplex This is also known as the “wiffle-ball” detector. Brand SimplexModel 2098-9508Manufacturer HoichikiType Smoke Detector (Photoelectric, 4-wire)
Wheelock 7002T-24 Category : WheelockEach 7002T-24 has a somewhat different pitch, so I’ve kept several that sound different from each other.
Gentex GX90S-4-15/75WR Category : GentexI also have the version of this alarm that is rebranded by Simplex.
