A wireless DIY Mobile Patrols system may be much less expensive than systems owned and installed by home security companies, but it lacks some important advantages. Unless you are experienced, you may no install the system correctly. Also, if the system fails you are completely responsible for any repairs. There is also no connection to the police.
Make an appointment with a Mobile Patrols company to evaluate the security needs of your home specifically. Everyone has different needs, and your security system should be designed to protect your home and family. If you've found a company that can tailor a system to you, you can receive the greatest amount of security to make you feel much more comfortable.
Watch out for the home security company that tries to over sell everything to you. There are many offerings from home security companies, including video monitoring, keeping on eye on your home on your television, keyless entry and other such innovations. While all interesting, some might be more than you need. The salesman who tries to sell you everything under the sun is not really looking out for your best interest, and is likely looking at his own bottom line.