I just realized that I didn’t put very clear instructions in the game itself. I might add them in a future update but here’s the instructions :

How to play :
Press the big button next to the door to close the door. (duh)
Press the black buttons on the monitor to switch between cameras.
Press the green button on the box on the monitor to play the music, press the red button to stop the music.
Press the button that says “Cool Vent” to cool the temperature in the ventilation. The temperature is displayed on the counter text to the button.