Sentinel: Descendants in Time Hints

The apparatus by the ornament-shaped object (globe with yellow cylinders).

  • 1 of 3: The pattern of lights for the ornament-shaped object is purple, blue, green, and white.
  • 2 of 3: These lights can be translated into the following sounds: air horn, trumpet, metallic horn, and tanker ship.
  • 3 of 3: The sounds should be entered into the apparatus closest to the ornament-shaped object in the following order: use the bottom horn, then the third horn (from the top), then the second horn, and finally the fifth horn.