In order to use the second generation video door entry systems with the first generation two-wire boards, it is necessary to know the hubs with which each device operates.
The XS-V2202E-2 board is compatible with the XS-V1006HUB-2IP hub. And the VTH1550CHW-2 monitor must have the XS-V3000NC-2 hub, as neither hub is compatible with the two devices at the same time. Therefore, both hubs must be used, one for each device.
XS-V2202E-2 with XS-V1006HUB-2IPVTH1550CHW-2