Honeywell SC806A1004 This is a Honeywell-rebranded Wheelock horn. Brand HoneywellModel SC806A1004Manufacturer WheelockType Alarm (Horn)
Notifier F67ODT Category : NotifierF67ODT likely isn’t the model number of the unit as it was just a random number stamped on the wall...
GE 521BXT Category : GEI think that this smoke detector might be intended for use in security systems.