4-Way Dimmer...How do you hook them up?
I have a hall way with three (3) light switches which control the On-and-Off switch from each of the three switches. I want to install a dimmer however I only can find a three (3-way) way dimmer switch which does not seem to be the one dimmer switch (3-way) that will correctly do the job. Is there a 4-way dimmer switch that is available on the market? Respectfully yours, Patrick L.

4-way dimmers
Patrick - any X10 switch can be used in a 4-way circuit by using additional companion switches. For example, XPD3 is the dimmer and the XPSS is the 3/4 way companion.
You might want to check out this picture:
http://www.smarthomeusa.com/Common/x10pro/images/xps3_xpss.jpg
It's hard to read, but it shows how to wire 4 ways... on the right it says 'connect any additional slaves here'.
Hope this helps!