Silent Knight by Honeywell
IntelliKnight 5820XL-EVS combines addressable fire alarm and emergency voice systems in one package. Any combination of up to four 50-watt or 125-watt amplifiers can be placed throughout a building to provide as much as 500 watts of power. Mappable speaker circuits allow for wide or targeted communications.
Rehlko: KD Series 60-600kW
Russelectric: Centralized Paralleling Systems
SC Johnson Professional: Alcare Extra with OPTIDOSE
Horton Automatics: BH Slider
Kimball International: Shore