Akuvox R20K SIP Video-Türsprechanlage mit Ziffernblock Aufputzmontage
I thought it was not working fine. I updated the Akuvox with the new firmware and now i can say it works really fine. Akuvox R20B R20K Rain Cover On-Wall Wetterschutzdach Regens. Akuvox In-Wall R20K/R20B Installation Kit (Unterputzkasten V2).