Simplex 4903-9101 Category : Simplex This unit was new and has never been used. Brand SimplexModel 4903-9101Manufacturer UnknownType Alarm (Strobe Plate)
EST SIGA-278 Category : EST/EdwardsThis unit is rusting ever so slightly. It features a newer EST logo on it.
Simplex 4259-25 Category : SimplexThis is a photoelectric smoke detector from the mid to late 1970’s.
