The Newer modules, such as the ASC2, will have extended features including the ability to read back the relay setting on the module. Therefore if a Cab1 or Cab2 throws the relay, the module will send out the status to the devices such as the iPad so an update to the iPad screens can be shown.
Not that we did not support the older modules, such as the ASC, you just have some limits in functionality. If you are considering any accessory remote controls, or expect to use a smart device sometime in the future, you should consider the latest modules: ASC2, BPC2, AMC2, SER2, etc.
The ASC2 only does 4 switches...so...I guess I can reduce my 21 switches (4 SC-2s) easily to 13 switches (crossovers between loops). So that's 4 ASC2s. Ok...sort of.
Now...no SC-3 is coming out, eh? So I can be relatively comfortable pre-ordering the ASC2s?