How are the emergency lights controlled?

Emergency lights on the A320 are controlled primarily by cockpit controls or the EMER pushbutton. When activated, these lights provide essential illumination for the cabin and escape routes in the event of an emergency, ensuring that crew and passengers can safely exit the aircraft.

The cockpit controls allow for manual activation, which enables the pilots to turn on the emergency lights as necessary, particularly in situations where the aircraft's primary power systems may have failed. The EMER pushbutton serves as a straightforward means to initiate this system quickly.

While other options may suggest alternative methods of control, they do not align with the actual operational procedures of the A320's emergency lighting system. For example, automatic activation of emergency lights can occur under certain conditions (like power loss), but proper procedure still includes manual activation via cockpit controls when needed. External switches or mobile devices are not part of the A320's design for emergency light activation.