I'd like some advice on Burglar alarms. I'd like to help secure a
small 900SF rental house. I suppose a couple of wireless door sensors
and a couple of wireless motion sensors.

I'm confused about standards and intercompatibility. Are there any?

I'm looking at something like this:


http://cgi.ebay.com/WIRELESS-HOME-SE...efaultDomain_0

The more I look the more confused I get! It is hard enough to tell
the low quality junk from the high quality junk.

Jeff