Doggy dor bell based on standard avidesen wireless doorbell

I created this funny adaptor where I can use a standard wireless doorbell kit from avidsen (that I could buy everywhere for approx 15€) to make a doggy doorbell.
You just need 1 long M6 screw with bolt.
I suggest to print in blue. It seems to be a nice colour for target learning.
Funny!

It works with avidsen Kläte series (I used model 20123116)

Here a video: https://youtu.be/5fMFLxPqrrA

Oct 2016: improved upper part to avoid hinge breakages