It may be that the ZYA-MOD-C4-S has been discontinued (or changed model number) as it appears that the Conexis L1 has been replaced with the Conexis L2 (although the modules seems like they should be compatible from reviews I've found).
Sadly it looks like the AYR202-ZB-C4 is just for the Assure line, as the modules look a bit different:
I'm looking for one that is Conexis compatible ideally as I don't really want an external keypad. Thanks anyway!