Где делают эти UKP-66

[DarioRes]

Домофон без трубки УКП-66 зачем там нужны батарейки?

[Drakkmore]

On-door speakerphone UKP-66 why do we need batteries there?

not certain what you're asking about here, but I think you need batteries because it's an electronic device that isn't wired to your home's power grid.

Please in the future make your queries in English, as we are an English gaming forum, and it is listed in the forum rules, and guidelines

Also I will be moving this post to an appropriate sub forum.