This gadget will make sound every time people pass by

Do you know a 21 year old crazy about Star Trek?

Well, this would be the perfect gift for any Star Trek buff out there.

This guy has a motion-sensitive door chime that has been modeled after the communicator panels on The Original Series.

It can be mounted on whatever side you like. It will give a signal whenever crosses the threshold.

There are two sounds available, one sound effect and a red alert alarm.