加入 かにゅう しゃ宅内 たくない装置 そうちでしょう
ka nyūshatakunai sōchideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 加入者宅内装置

1. Probably a home installation for joiners.

Polite
Presumptive
Conjecture
Computing