A communicator is a device carried by each of the Titans. It is round, yellow, and about the size of a pocket watch. It has a digital screen which displays messages. It can be used by the Titans to communicate with each other or as a crime alert warning.

All of the communicators can be reached from the Titans alert screen in the Titans Tower living room.

In "Dude Relax", Robin was going crazy over the communicator.