Silent Knight by Honeywell’s Farenhyt IDP-FIRE-CO detector has four different sensing elements (for smoke, CO, light/flame and heat) to increase the unit’s sensitivity, while minimizing nuisance alarms. The B200S sounder base delivers customized tones to differentiate between a fire and CO event. Nuisance alarm rejection capabilities are suited for areas within facilities where burned food, steam or temperature fluctuations could otherwise cause an alarm.