Wireless Surveillance Systems

Posted this on the TSP forums, but thought I would try here too!

Hi Guys, does anyone have any practical experience with wireless surveillance systems? Im interested in 2-4 camera set up, and Ideally they should be automatically recording with motion detection as well as an alert to the monitor. I know MURS has the motion detection, but since my property is only 1/3 acre and its for monitoring the outside of the house I need a visual. For example, one on the front door to see when visitors come and have it alert us.

Any guidance would be very appreciated.

Rob