Which emergency feature is essential for elevators serving high-rise buildings?

Emergency communication systems are vital for elevators in high-rise buildings because they provide a critical line of communication between passengers and emergency responders during an emergency situation. In the event of a power failure, fire, or any other emergency, individuals trapped in an elevator must be able to quickly communicate their situation and location to ensure a timely rescue. These systems often include intercoms or two-way communication devices that operate independently of the building's main power supply, ensuring they remain functional even in emergencies.

While backup power systems are also important for keeping elevators operational during power outages, and fire-resistant doors, alongside water suppression systems, help with overall building safety, the ability to communicate during emergencies is paramount for passenger safety and effective response measures. This makes emergency communication systems an essential feature specifically tailored for the unpredictable challenges that can arise in high-rise buildings.