Though it's not very aesthetic but in the end I could make my concept work. It does have flaws in the concept itself, like alarm would ring each time door knob opens, and door can not identify when you are actually leaving the house. when you are just opening the door for certain task. But as a starting point I was only aiming at much simpler concept knowing that I may not have answers at present for bigger questions like identifying when it's an exit and when it's a movement of the main door knob for other purpose. Below is the video of my first every connected object. " Don't forget."
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