Simplex 4906-9127 The strobe on this alarm is a SmartSync strobe. Brand SimplexModel 4906-9127Manufacturer SimplexType Alarm (Horn/Strobe)
Potter OSYSU-A2 Category : PotterI honestly have no idea what this thing is, but it says Potter on it, so that means it goes...
Pyrotronics ES0-24S Category : Cerberus Pyrotronics, PyrotronicsThis is a rebranded Wheelock horn/strobe, and a pretty rare one at that since it has an electronic horn mechanism...
Wheelock AES-DL1-WS-24 Category : WheelockDepending on which set of inputs has power applied to it, the alarm will produce a different tone.