住宅 じゅうたく よう火災 かさい警報 けいほう なら
jūtakuyōka saikeihōkinara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 住宅用火災警報器

1. If/when it's a residential fire alarm; If/when regarding a residential fire alarm

Nara Conditional