Flight Deck Module GF-ATC from GoFlight.

In excellent condition. No problems.
The only interface for plug-in headset usage, this control panel simulates the sound of radio traffic, giving you an added sense of realism (Youd be wearing a headset in an actual airplane.)

Why Its Helpful:
Interface with the in-game ATC (Air Traffic Control) options and/or live over-the-Internet ATV training.
Select different options on the ATC screen menu.
Use this module to talk with other pilots during the flight.
The simple USB interface allows you to get straight to the cockpit. The GF-ATC can be configured within minutes using the FREE GF-Config software.

Compatible with all major Flight Simulation Platforms out of the box, including FSX and Prepar3d.
Third Party support is currently available for X-Plane.

Price at the store is 120USD, excluding shipping (I'm selling for half this price).