There are a number of systems for protecting your home while you are away. There are alarm systems which are triggered when a door or window is opened, and others that include motion detectors. Either of these systems may have an alarm that makes a lot of noise (similar to a car alarm). Alternatively, either may be monitored by an alarm company, or by you, via your smartphone. They all require a non-trivial initial investment and possible ongoing monthly charges. If you aren’t going to investment in one them, there are still things you can do to protect your home while you are away at minimal cost, or at no cost at all. And even if you have an expensive alarm systems, the tips below will help you avoid some of potential problems that alarms don’t address.