Deadly fire at Bronx apartment building in New York City: Animated Explanation of cause

A fire in a Bronx apartment high-rise on East 181st St. resulted in fatalities, including children. The fire was caused by a malfunctioning space heater in a third-floor apartment. As the fire spread, the apartment door was left open, allowing smoke to fill the building. Firefighters arrived quickly, and the alarm system was reportedly functional, though residents often ignored alarms due to frequent false triggers.

What was the response time of the firefighters to the fire?

What issues were reported regarding the fire alarms by the residents?