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opening walls afe in Signalis
Image via Humble Games

How to open the Wall Safe in class 4B in Signalis

What's in the safe?

Signalis is a retro psychological horror where the player has to solver puzzles, uncover the story, and blast strange abhorrent creatures. As you make your way around the Workers Facilities, you’ll notice a wall safe in classroom 4B that some people have been complaining about. But how can you get inside, and what’s in it? Here is how to open the wall safe in classroom 4B.

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How to open classroom 4B’s wall safe in Signalis

The wall safe, from reading a series of notes, is malfunctioning as the combination keeps resetting to the original combination from the manufacturer. How convenient. You’ll now need to find the manual for the wall safes to unlock it.

Finding the Aperture Card

In the library, at the top of one of first corridor, is a microfilm reader, that will allow you to read Aperture Cards. So, to get your hands on one, you’ll need to bust into the locked door in the first main corridor.

To get into that room, you’ll need to get your hands on a Protektor Key, which can be found in the Aula, at the top of the second corridor. It will be lying on a seat in the top left of the room.

protektor key in Signalis
Image via Humble Games

With this key, make your way back down to the main corridor to the right of the Surface Access room that was originally locked. The first door is locked, but can be opened with the Protektor key. That room, once unlocked, will lead into an Observation room.

unlocked observation room in Signalis
Image via Humble Games

In the Observation room, interact with the drawer at the top. Inside the second draw, you will find a pistol as well as the Aperture Card. Pick it up.

Related: How to save your progress in Signalis

Unlocking the wall safe in Signalis

With your Aperture Card, go to the library, but you might want to watch your step on the way there and have your gun equipped. In the library, the device to the left is the microfilm reader. Interact with it to read the Aperture Card.

It will be the manual for the wall safe, and will contain the original combination, 204512.

Aperture card reading in Signalis
Image via Humble Games

Go back to classroom 4B and go to the wall safe. Input this code into the keypad. A green light will indicate you have done it properly. Turn the lock to the left to open it up, and collect whatever is inside.

Keep an eye on Gamer Journalist for more gaming and Signalis content, such as how to shoot and kill enemies.

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