The last system uses a wireless system that auto-dials certain pre-programmed contacts should a burglar break into your home and set off the alarms
. Unlike the monitored system which relies on professional installation of the alarms, the wireless auto-dial enables you to install the system yourself in a uncomplicated, no-hassle process in which you can self-install the alarms. By contacting a pre-programmed list of contacts, which can include yourself, you can make the decision on whether or not to contact the police, so the responsibility falls on yourself rather than neighbors. And you won't have to pay monthly monitoring fees for the professionals to watch over your home. It is a relatively cheap system in comparison the monitored one, but provides a reliable and effective protection.