Faraday 5508 The bump on the front of this strobe is a magnifier. Brand FaradayModel 5508Manufacturer FaradayType Alarm (Strobe)
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 7002T-24 Category : WheelockEach 7002T-24 has a somewhat different pitch, so I’ve kept several that sound different from each other.