Have you thought about something like this.
http://www.x10.com/products/x10_vk54a.htm
or http://www.x10.com/products/x10_vk53a.htm#
it looks like the latter includes the sender etc but for 10 bucks less.
Apologies for the standard X10 popups!
_________________________
========================== the chewtoy for the dog of Life