Radar Orb

A Radar Orb in the Pokémon Mystery Dungeon series is an item that will reveal the location of all Pokémon on the floor when used.
==Locations in Explorers of Time, Darkness, & Sky==
Radar Orbs can be found on all floors of Waterfall Cave, Apple Woods, Foggy Forest, Serenity River, Lush Prairie, Tiny Meadow, Landslide Cave, Chasm Cave, Dark Hill, Sealed Ruin, Dusk Forest, Treeshroud Forest, Brine Cave, Hidden Land, Temporal Tower, Mystifying Forest, Shimmer Hill, Midnight Forest, Sky Peak, Blizzard Island, Crevice Cave, Giant Volcano, Sky Stairway, Surrounded Sea, Miracle Sea, The Nightmare, Spacial Rift, & Dark Crater
*Star Cave (all floors & shops 9F-15F)
*Mystery Jungle (all floors & any shop)
*Bottomless Sea (1F-48F)
*Marine Resort (all floors & any shop)
*Oblivion Forest (all floors & any shop)
*Treacherous Waters (all floors & shops 16F-19F)
*Southeastern Islands (all floors & any shop)
*Inferno Cave (all floors & any shop)
*Zero Isle East (all floors & any shop)
*Zero Isle West (all floors & any shop except 14F & 29F)
*Zero Isle South (all floors except 20F & shops 1F-89F)
*Destiny Tower (all floors except 20F & any shop)