Please note: I did not come up with this invention. I saw it in a video by "ribbitz". All credit for the idea belongs to him. You can view his original video here: www.youtube.com/watch

The reason I've posted this video is show people my compact version of it, how to build it from scratch, how you can wire it, and just how easy it is to build one. I love his idea and want to help people take advantage of it.

What his device does is detect water and sends an inverted redstone signal indicating if there is water. I demonstrate how to use the device to implement a secret locking mechanism for your doors. There are many other applications you could use this for.