Which of the following is NOT a component of a fire sprinkler system?

A fire sprinkler system consists of various components designed to effectively deliver water to extinguish or control a fire. Among the enumerated options, smoke detectors are not classified as part of the fire sprinkler system itself.

Smoke detectors are critical components of fire alarm systems, which are responsible for detecting smoke and alerting occupants of a building to potential fires. Their primary function is to provide early warning of fire through audible alarms or visual alerts, allowing for timely evacuation. In contrast, the components of a fire sprinkler system primarily include water supply tanks, elevated tanks, and alarm check valves, all of which work together to ensure that water is readily available and can reach the designated areas during a fire emergency.

Water supply tanks and elevated tanks serve to provide a reliable water source, while alarm check valves are essential for maintaining system integrity and preventing backflow. Each of these elements is crucial for the operational effectiveness of a fire sprinkler system in actively fighting or controlling a fire.