Enhanced Sensors

Enhanced Sensors is a perk in Fallout: New Vegas given to you while you have ED-E or its copy as a companion.

Description
This perk greatly extends the player's detection radius, the equivalent of having a full 10 in Perception (in essence, ED-E's detection is substituted for your own). It also allows you to target cloaked enemies in V.A.T.S. mode. When paired with the Spotter perk given by Craig Boone, the player can effectively snipe targets from much greater distances.