Low voltage dimmer

[DrK <drke51@xxxxxxxxx>]

I have a 600w magnetic 120V - 12V transformer that has 2 - 300 W 12V
circuits that I plan to use for lighting.  I would like to control the
2 load 12V sides independently.  Is there a comercial dimmer (X-10 or
eqivalent) that will control the LV load side?  If not a dimmer, is
there a remote switch that will do it?

Thanks,