I primarily work in the Landscape Lighting Industry but have recently
found myself working on many decorative ponds. I want to share a
unique and low cost way of controlling the lighting and pumps around
the pond. I use products from a company called X10 Pro,
www.x10pro.com. They have a system that allows one to send signals
over the AC powerline of the residence. No new wiring is required!
This allows one to have an X10 controller in the house that sends a
signal to an X10 module outside that then turns on or off a light
and/or appliance. This can work with both low voltage and 120 v
lighting plus 120v pumps and even 240 v. Both remote and timed
control is available. The timer/controller costs about $35 and there
is a cost of about $18 for each electrical load I control. I get my
product from two local John Deere Landscapes supply houses. They both
have a working display in their showrooms. Have fun.