What best describes a multi-cycle sprinkler system?

A multi-cycle sprinkler system is best described as one that is capable of repeated on-off flow cycles in response to heat. This characteristic is key to its functionality, as the system is designed to activate sprinklers at different times based on the detection of heat from a fire, allowing for a targeted approach to firefighting.

When a fire is detected, the system will turn on to disperse water in the affected areas and can subsequently turn off when the heat levels decrease, or when the activation condition is no longer present. This cycle can repeat multiple times, adjusting to the changing dynamics of the fire and the environment.

The ability to cycle on and off helps to conserve water and ensures that the sprinklers can operate effectively in response to fluctuating fire conditions. Moreover, it distinguishes these systems from those that provide a constant flow of water or require manual intervention, as well as systems that operate continuously without stopping. These other types may not be as responsive or efficient in controlling varied fire scenarios as the multi-cycle system is designed to be.