Simplex 4903-9459 Category : Simplex This unit is an addressable horn strobe. It’s what my elementary school had installed in the classrooms. Brand SimplexModel 4903-9459Manufacturer SimplexType Alarm (Horn/Strobe)
Space Age AV32+2DCD Category : Space Age ElectronicsThat is an electromechanical horn on the rear of the strobe plate.
Faraday 6234 Category : FaradayThis alarm uses an electromechanical horn. It is the same horn found on the Simplex 2901-9838.
