Tracking and communication device
The Ghost Beeper was a device carried by Jessica Wray and used to keep in contact with the Ghostbusters. She could use it to get in touch with them vocally, like a walkie talkie. The Beeper was also able to be used as a tracking device.
The Ghost Beeper was first used in the episode The Phantom Of The Big Apple.
- Other communication devices used by the Ghostbusters include the Geebee Finder, GeeBeeper and Two Way Communicator.
Maze Caves (as Ghost Communicator)