Which alarm type is intended to alert occupants in case of fire or dangerous smoke?

• A. Fire/smoke/CO2 alarms
• B. CO detectors
• C. Humidity alarms
• D. Carbon monoxide alarms

Answer: (A)

To alert occupants in case of fire or dangerous smoke, you need a device that is specifically designed to detect smoke or signs of fire and immediately sound an alarm. Fire/smoke/CO2 alarms are built for this purpose, combining smoke detection (and often heat or combustion byproducts) to warn people quickly so they can evacuate.

Co detectors focus on carbon monoxide, which is dangerous but not the same as smoke or fire indicators, so they don’t reliably signal a fire in its early stages. Humidity alarms monitor moisture levels and have no relation to fire risk. Carbon monoxide alarms detect CO but don’t detect smoke or flames, so they won’t provide the essential fire warning you need.