Silent Knight by Honeywell
Farenhyt IDP-FIRE-CO detector's sounder base features different tones for fire and carbon monoxide alarms. Four separate sensing elements look for smoke, carbon monoxide, light/flame and heat, while minimizing nuisance alarms.
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