Which of the following is a typical component of an ESS fire alarm system?

• A. Alarm devices
• B. Refrigeration compressor
• C. Parking lot lighting
• D. Water storage tanks

Answer: (A)

In an ESS fire alarm system, the signaling component is what actually alerts people to a fire condition. Alarm devices provide the audible and visual warnings that notify occupants and help coordinate evacuation, such as horns, bells, strobes, and speaker/voice alarms connected to the fire alarm control panel. They are the active output that communicates danger when the system is triggered.

The other items don’t serve this signaling role. A refrigeration compressor is part of the refrigeration equipment, not the fire alarm system. Parking lot lighting is exterior lighting and not the fire alarm signaling device. Water storage tanks relate to water supply or suppression, not to alerting occupants.