Yeah, the landlord refused to buy it, but instead wanted to install the wirelessly controlled fire alarm. Surely the renter could buy it for themselves but then

Yeah, the landlord refused to buy it, but instead wanted to install the wirelessly controlled fire alarm. Surely the renter could buy it for themselves but then there'd be two alarms, one bought by the landlord and one by the renter. The question was about the alarm the landlord installed.