Simplex 4904-9137 This is, in fact, a Simplex 4904-9137. It’s just missing its housing. Brand SimplexModel 4904-9137Manufacturer SimplexType Alarm (Strobe)
Wheelock FS6-61 Category : WheelockNothing like a vintage Wheelock bell! I got this with my Wheelock NC-OS pull.
System Sensor PA400B+PS24LO Category : System SensorThe horn’s model is PA400B, the strobe’s model is PS24LO.
Faraday 6234-E Category : FaradayI believe the “E” appendage on the end of the model number means it is a sync-strobe.
