noun, noun or participle which takes 'suru', intransitive verb, noun which may take the genitive case particle 'no'
being at home; being in
Means that someone is present at their home, often contrasted with 留守 or 外出. It can be used as a noun, as 在宅する, or before another noun as 在宅の.
午後はずっと在宅しています。
I will be at home all afternoon.
担当者が在宅かどうか確認して
Please check whether the person in charge is at home.