Wireless connection between the doorbell and the homebase

Hi, I got the battery-powered doorbell with homebase and have a question about the connection between the two. It’s said that the doorbell and the homebase use low-power wireless connection.

Does it mean that they can’t be too far apart and need to talk to each other directly? Or can they still talk via some wifi AP?

In my home scenario, it’s difficult to put the two close to each other, so it’d be great if they don’t have to talk to each other directly.

Thanks for the answer in advance!