If firefighters find themselves locked in an Elevator Lobby, what should they use to unlock the doors?

Firefighters who find themselves locked in an elevator lobby should use the pull station to signal for help or to initiate an emergency response process if they cannot exit the lobby through traditional means. The pull station is designed to activate an alarm, which alerts building occupants and emergency services of the situation.

Using a hand tool might imply physically forcing doors or equipment, which is not the safest or most efficient approach in this scenario. An emergency key could be specific to certain locking mechanisms but is not typically standard for all types of elevator lobbies. The elevator override switch does serve a function in controlling elevators during emergencies, but it does not directly apply to unlocking lobby doors.

In this context, the pull station effectively communicates the need for assistance and initiates a coordinated response from external help, making it the most appropriate choice.