Drone Control Device

 is an item which is added to Fallout 3 in the Mothership Zeta add-on.

It can be looted from an alien in Mothership Zeta's Robot Assembly.

Uses
After the player obtains the Drone Control Device they may activate any contained drones they come across on the Mothership and make them into a follower, with a maximum of 2 drone followers at a time: one Support Drone and one Guardian Drone.