Just wanted to share some info regarding Ross Switches and the Z2500. I just finished installing 34 of them! Initially I was very apprehensive regarding the 2500 as opposed to the Z1000. Totally wrong!
I have been able to incorporate the Z2500 to function on a Legacy based system WITHOUT the use of the Lionel SC2 controllers. (A savings of 34/4 x $120 each). Simply by purchasing the Z-Stuff Data Driver Module, $20. Only 1 is required for an infinite number of switches! This module will enable the z2500 to be connected to a AIU as well.
I have the switches connected so they can be activated, 1) Locally at the switch motor, 2) Via a momentary SPST toggle switch located on a Control Panel, which also has bicolor LED's to show switch position, 3) Remotely using the CAB2 handheld controller, 4) Use the remote buttons, provided with the Ross Switches. (This layout is Lionel only and is not using DCS, if it were they could be controlled through the AIU as well) . Even been able to connect two switches together in either a X-Over, or connecting a WYE to 2 standard curved switches, so that they could work together by selecting one toggle.
The key to the whole thing is the Data Driver module DZ 2001. Z-Stuff has hit a home run with this device IMO.