I bought a 2 C safety kit and would like to add a battery powered doorbell. Is the base the same for boty system or do you need a separate base for each? If yes can you buy the doorbell as add-in to 2C?
At the moment the battery doorbell is only sold with the Homebase I believe a stand-alone doorbell is possibly coming later this year but no dates.
You should be able to use your existing Homebase for the doorbell and just keep the other one as a spare or use it just for the doorbell if you wish
Thank you for reaching out.
Yes, the battery doorbell and eufyca, 2c are using the same Homebase 2 
Any other concerns we can address in the future, please feel free to contact us support@eufylife.com.
Thank you for your support. Have a lovely day.
Wait… I just got a wired doorbell. It didnt come with a hub.