Sprinkler heads perform two functions, one of which is to apply water to the fire. What is the other?

Sprinkler heads perform two functions, one of which is to apply water to the fire. What is the other?

• A. To vent heat
• B. To deliver foam
• C. To activate the fire alarm
• D. To cool the surrounding area

Answer: (C)

When a sprinkler head operates, its purpose is to apply water to control and extinguish the fire. The other function is to alert occupants and responders by activating the building’s fire alarm system. In most systems, water flow from the head triggers a flow switch that sends a signal to the fire alarm panel, which then sounds alarms and notifies occupants and responders. The other options don’t fit as a standard function: venting heat isn’t what sprinkler heads do, foam delivery is only in specialized foam systems, and cooling is a natural result of water but not a separate function of the head itself.

When a sprinkler head operates, its purpose is to apply water to control and extinguish the fire. The other function is to alert occupants and responders by activating the building’s fire alarm system. In most systems, water flow from the head triggers a flow switch that sends a signal to the fire alarm panel, which then sounds alarms and notifies occupants and responders. The other options don’t fit as a standard function: venting heat isn’t what sprinkler heads do, foam delivery is only in specialized foam systems, and cooling is a natural result of water but not a separate function of the head itself.