Metro Service Door Pass

"Message to all personnel! The Metro Station's service entrance locking mechanism has been replaced. The new code to the door is: 4134."

- PDA description

Description

 * An essential item that provides the door code to exit the Pripyat Underground sewer and mine section.
 * The other exit is "blocked due to cave-in" so there is no route back to the Outskirts from the Underground.

Trivia

 * The only code door mission that has a detailed task narrative.