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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.:)

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<p>Well done !</p>
Verry nice idea. Verry special and a verry new concept.
<p>Thank you very much for sharing your nice critics. I will upload my video to Youtube :)</p>
<p>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!</p>

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