What function does a nox box serve in fire safety?

A nox box is a critical element in fire safety as it contains building keys specifically for use by the fire department. This allows emergency responders to quickly access the premises in the event of a fire or other emergencies without having to force entry. By having immediate access to keys, firefighters can ensure a prompt and efficient response, crucial for mitigating damage and ensuring the safety of occupants.

The other functions listed do not align with the primary purpose of a nox box. For instance, locking emergency exits would hinder evacuation efforts during a fire, which contradicts safety protocols. Emergency lighting equipment is necessary but is typically stored in different locations, not a nox box. Lastly, while fire extinguishers play a vital role in fire safety, they are not the function of a nox box, which is solely designated for housing keys.