Compass

The Compass is a recurring item in the Legend of Zelda series. There is one to be found in each dungeon. This device allows Link to see the locations of Treasure Chests and dungeon boss rooms on a Dungeon Map. The Compass is usually shown on the subscreen.

Certain compasses that appear in games made after The Legend of Zelda: Link's Awakening make a chime noise upon the entering of a room, letting Link know that there is a key in said room, albeit possibly hidden in a chest or hidden until all enemies in the room are defeated.