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Niklas
2017-12-04 16:21

How to make an efficient and free intrusion alarm

Image 1. Click to open in original size.

If you want to know if someone is trying to get in using the door, this is a very easy to make alarm for your home or hotel room. Just take a mug with a handle, or something similar, and fill it with silverware or other metal objects. Hang it on the inside of the door handle. When someone, like a burglar or curfew-breaking teenager, pushes the handle, the mug and silverware will fall to the floor making a terrible noise.


Best regards, Niklas 🎈

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