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.
Teledyne Flir: Si2a-LD and Si2a-Pro
Electrolux Professional: Generation 7000
Inovonics: Duress Card
T&S Brass: T&S LYNC
AAF International: AstroCel III Aero