Strobulb

The Strobe Light is a flashlight tool which appears in Luigi's Mansion: Dark Moon. The Strobe Light is required to stun some Ghosts as, unlike in the first game, shining light via flashlight is no longer sufficient to stun all ghosts in the game. Some ghosts wear sunglasses to protect them from the light; these sunglasses must be removed with the Poltergust 5000 before the flashlight or Strobe Light is used.