Final answer:
The automatic shut-off feature in fire sprinkler systems shuts off water once the fire is extinguished and turns it on again if the fire reignites, thereby conserving water and limiting damage.
Step-by-step explanation:
The feature you're asking about is commonly known as the automatic shut-off feature in fire sprinkler systems. This feature is designed to conserve water and reduce potential water damage by shutting off the water supply when the fire has been extinguished. Should the fire reignite, the system is capable of detecting the increase in temperature and will recommence the flow of water to address the fire. Fire sprinkler systems can be very sophisticated, and this particular feature is a testament to the advanced engineering that goes into making modern buildings safer from the threat of fires.