I dont think there's a limit. If there is, its high.


Video Doorbell2(And original for that matter) can be hard line powered and it is highly recommended. At least the new ones have swappable batteries instead of having to bring the whole unit in to charge.

I would still use the Elites where you can. Significantly better unit and looks very professional. Its not like your looking at them side by side on a house/building.