Collegamento Del Kit Bifamiliare Sch.1784/726 Con 3 Videocitofoni In Parallelo Ad Ogni Utenza; Two-Household Kit Connection Ref.1784/726 With 3 Video Door Phones In Parallel For Each User; Raccordement Du Kit Bi-Famille Ref. 1784/726 Avec 3 Moniteurs En Parallele Pour Chaque Appartement; En Paralelo A Cada Usuario - urmet 2VOICE MIKRA2 1784 Installationsanleitung