Light Beacon

Unknown[Metroid Prime]

Metroid Prime

Light Beacons must be energized by Beam weapon fire to function, and remain charged for a limited time. The Beacons were created when the Luminoth ran short of Light Crystals during the war. While simpler to make, the Beacons were also unstable. They had to be energized periodically, and could run out of energy at critical moments. Still, any protection was better than none for the Luminoth warriors.