Honeywell SC806A1004 This is a Honeywell-rebranded Wheelock horn. Brand HoneywellModel SC806A1004Manufacturer WheelockType Alarm (Horn)
Wheelock 7002T-24 Category : WheelockEach 7002T-24 has a somewhat different pitch, so I’ve kept several that sound different from each other.
Gaylord NC-1357A Category : GaylordThis is a rebranded EST/Edwards 270-SPO for use in some sort of ventilator system.