What type of system is typically interfaced with fire alarm systems to shut down during an alarm?

HVAC systems are designed to maintain environmental controls, including temperature and air quality, within a building. During a fire alarm, it is critical that HVAC systems are interfaced with the fire alarm system to prevent the circulation of smoke and toxins throughout the building. When a fire is detected, the fire alarm system will signal the HVAC system to shut down or switch to smoke control mode, thereby reducing smoke spread and improving the chances of safe evacuation for occupants.

In contrast, emergency lighting systems provide illumination during an evacuation, security alarm systems are focused on unauthorized access or theft prevention, and surveillance systems are used for monitoring and recording actions within a space. While these systems play important roles in overall building safety and security, they do not directly interface with fire alarm systems in the same manner as HVAC systems do to mitigate hazards during a fire event.