[jqm]

There similar do-it-yourself security systems for about $2-300 that use a sim card and the cell networks.

http://www.amazon.com/PiSector-Cellular-Wireless-Security-Qu...

You can program what numbers to call. I had one similar to this in a building I leased along with some IP cameras. It went off a few times by itself and woke me up in the middle of the night and I drove down to find nothing.. maybe the window vibration sensors or a mouse or something.

We moved recently, but I haven't put it up at the new house. My main security at home is two dogs and a short barrel pistol grip shotgun with a blinding light. Everything irreplaceable is in a fireproof gun safe that is bolted to the floor.