Smarthome.com has relay boxes in 4, 8, 16
relay configurations - usful if you need to
control low voltage items (lighting,
sprinkler systems and such). If you are
looking for modules for 120/220 volt then
you will have to use whats already
available, since it isn't known what you
want to control, they can't just make a
generic multi-module unit. Different device
specifications require different control
modules - you can't just use a generic
module with all of the X10 control features
due to the electronics used.