Local business purchased home and converted to sb cbrf. They requested we install smokes and heats to WI DHS Chap 83 and NFPA 72 requirements. Does this have to be a commercial fire panel? In WI it does not look like it is required. But they refer to NFPA 72. They also are requesting we install an automatic door closure tied to the fire panel. There is a central laundry room with doors to each side of the duplex. If this is installed are we now required under NFPA 72 to install pull stations, horn strobes and commercial fire panel?