Floating-eye sensors are a security mechanism found in Chozodia during Metroid: Zero Mission, specifically in the interior of the Chozo temple. The sensors are eyes that seemingly slide across walls, ascending and descending while shining a harmless yellow beam that can detect intruders. They pose a major threat to Samus during her early exploration of the temple: if they detect her, the Pirate Alarm System will be triggered, causing numerous Space Pirates to swarm in on her location which Samus is incapable of killing in her Zero Suit. In addition, the sensors will begin to fire energy blasts at her. The Floating-eye sensors are considerably less threatening when Samus acquires the Fully Powered Suit, allowing her to use her full arsenal.