Which device activates the waterflow alarm?

Which device activates the waterflow alarm?

• A. The Waterflow Detector.
• B. A Smoke Detector.
• C. A Heat Detector.
• D. A Manual Pull Station.

Answer: (A)

Waterflow alarms are triggered by a waterflow detector that senses water moving through the sprinkler piping when a sprinkler head has opened. This detector sends a signal to the fire alarm system to indicate active sprinkler water flow. Smoke detectors and heat detectors monitor air conditions, not water movement, so they don’t activate the waterflow alarm. A manual pull station is operated by occupants to manually start the alarm and isn’t tied to sprinkler water flow. Therefore, the device that activates the waterflow alarm is the waterflow detector.