Simplex 4903-9217 Category : Simplex This rectangular Simplex notification appliances has an electromechanical horn mechanism, rather than an electronic horn mechanism or a speaker. Brand SimplexModel 4903-9217Manufacturer SimplexType Alarm (Horn/Strobe, 4-wire)
Fire-Lite BG-12LRA Category : Fire-LiteThis is really just a Fire-Lite BG-12LR mounted onto the light/button plate.
