A good home security system need not be very expensive. If you can’t afford the high-tech gadgets that rich people have in their homes, you can still protect your family using more affordable alternatives. A window alarm, for example, can already alert you and prevent an intruder from trespassing into your home.

This tiny gadget attaches to windows and is set off by the vibrations caused by someone trying to break through. The alarm is a piercing 95 decibel that will alert you instantly and is likely to get a burglar spooked. It has a solid, state-of-the-art design and is battery operated.