There is a device called tattletale. It cost about $1000. It consist of a base unit that you place in your house and a assortment of sensors that can be placed up to 1/2 mile away. If the sensors are moved or disturbed the base unit will sound an alarm and you will get a phone call from a monitoring service within a few minutes. you can either check it out yourself of have the monitoring service call the police. I think the monitoring service cost about $40 a month.