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10 Security Devices to Help Keep Your Family Safe


5
Magnetic Door Alarms

If you're not quite ready to spring for a full home alarm system -- or if you want an extra layer of protection on top of the system you already have -- you might want to look into magnetic door alarms. You place the small, two-piece plastic devices on either side of a door opening, and when the door is opened as little as a centimeter and a half, it sets off an extremely loud (110-plus decibels) alarm. Of course, a $10 alarm isn't going to call the police -- and a seasoned thief will know this -- but it could be enough to scare away a more inexperienced burglar. Some also tout magnetic door alarms as a way to keep small children from wandering outside, but we're wondering what those 110 decibels would do to the poor kid's ears …


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