Simplex 4051 Category : Simplex The DC-powered version of the Simplex 4050, which runs on AC power. Brand SimplexModel 4051Manufacturer Federal SignalType Alarm (Horn)
Honeywell HFS-P Category : HoneywellOddly enough, the model number on this particular smoke doesn’t fit the typical pattern for Honeywell devices.
Space Age AV32 Category : Space Age ElectronicsI have no idea why there is no fire lettering on this unit
