Introduction: Doorbell
We present to you the revolutionary doorbell. When you have lost your key, you can Always open the door with a reserve key hidden inside the doorbell. It's a smart solution for everyone who loses their keys often.:)
Step 1:

Participated in the
Hiding Places Contest
4 Comments
7 years ago on Introduction
Well done !
7 years ago
Verry nice idea. Verry special and a verry new concept.
7 years ago on Introduction
Thank you very much for sharing your nice critics. I will upload my video to Youtube :)
7 years ago on Introduction
Who would think to look in a door bell to find a key? Great project! You should upload your video to YouTube so that it can be embedded into the instructable. Thanks for sharing and welcome to the community!