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)
Federal Signal 950B Category : Federal SignalI’m not sure why there is a transformer on the side of this alarm.
Simplex 4904-9101 Category : SimplexThis is the same strobe that is found on the Simplex 4903-9101 strobe plates.
Pyrotronics MS-501 Category : Cerberus PyrotronicsThe only issue that I have with this pull station is that the screw terminal on the back of it...
