One frequent topic of conversation at lunch with fellow geeks is how awesome it would be to have 23rd century gadgets in our 21st century world. We"re not that far in the past, are we? Fewer than 200 years to go! We watch our Trek and we drool over the gadgets and gizmos and wish we could have them....and then, our wish came true! Several cases of the wall communicator panels from The Original Series appeared in our warehouse. Mount one on the wall by your door and when someone crosses your threshold, it will alert you. Choose between the door opening sound effect or the Red Alert alarm. Whether it"s a bloodthirsty Klingon bent on revenge or just your boss looking for your TPS report, you"ll know the moment they appear.Push button on front for Communicator Whistle soundTwo settings: Door opening sound or Red Alert soundBatteries: 3 AA Batteries (not included)Dimensions: 6 1/2" x 5 1/4" x 1"