I've always thought home alarms would be a luxury I just can not afford. It's a bit hard to feel secure at times. Fortunately, I have found a DIY discreet alarm that I could make. It is called a “Tripwire Bang Alarm!”
In my neighborhood I see people with those fancy systems you have to punch in a secret code. Personally, I live in an apartment on a budget, so installing some fancy system does not really resonate with my life at this moment.
This thing is cheap to make and simple enough for anyone to install. It makes an extremely loud noise when someone encounters it. It is basically made using a mousetrap, ring caps and fishing wire.!
The unsuspecting trespasser will trip on the thin, nearly-invisible wire and trigger the ring cap (used in play cap guns) via the mousetrap.
This is brilliant in it's simplicity and extremely effective – Check out the parts, which you probably have lying around, and construct on the next page