I *think* i found the switch you have on home depots site.
The wiring is quite different from how a normal 3 way works, but it also looks like in section 3 of the manual, there are instructions for using this timer with an existing 3 way setup. There is mention of a "jumper" wire on the switch which you havent previously mentioned.
I just wanted to send a thank you note to tfo411. We were trying to figure out how to correctly install the same digital timer and weren't having any luck. A quick Google search brought us to this forum. The directions worked like a charm!!! The information was much appreciated.
Re: Digitial Timer in 3 Gang box with (2) 3way switches and 1 single pole..confused.
Another thank you to "tfo411". Why they don't include the instruction to abandon one of the travelers is really frustrating. Switch works just like it should it took about an hour of frustration and Google searching to get it right. Thanks again.