It can be used to open the red, green and yellow emergency boxes: Facility 1F * Control Room Hall (Green Box; 1 plug) * Elevator Hall (Red Box; 2 plugs) * Strategy Room (Yellow Box; 1 plug) Facility 2F * Communication Room (Red Box; 1 plug) Facility B1 * Main Hallway B1 (Red Box; 2 plugs) * Research Area Hall (Green Box; 2 plugs) Facility B2 * Experiment Room Hall (Red and Green Boxes; 2 and 1 plugs, respectively) * Power Frequency Room (Red and Green Boxes; 2 and 1 plugs, respectively) Facility B3 * Control Room B3 (Red and Yellow Boxes; 3 and 1 plugs, respectively) * Central Stairway (Red and Green Boxes; 3 and 1 plugs, respectively)