加入 かにゅう しゃ宅内 たくない装置 そうちであれば
ka nyūshatakunai sōchideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 加入者宅内装置

1. If it's an in-home device for joiners/members; If it's an in-home installation for those who joined/registered

Ba Conditional
Computing