When more than one smoke alarm is required to be installed within an individual dwelling unit the alarm devices shall be interconnected in such a manner that the actuation of one alarm will activate all of the alarms in the individual unit. Smoke alarms shall be installed in the following locations:

 (1) In each sleeping room.

 (2) Outside each separate sleeping area in the immediate vicinity of the sleeping rooms.

 (3) On each additional story of the dwelling, including basements and habitable attics but not including crawl spaces and uninhabitable attics. In dwellings or dwelling units with split levels and without an intervening door between the adjacent levels, a smoke alarm installed on the upper level shall suffice for the adjacent lower level provided that the lower level is less than one full story below the upper level.

 (4) In dwelling units where the ceiling height of a room open to the hallway serving the bedrooms exceeds that of the hallway by twenty-four inches or more, smoke alarms shall be installed in the hallway and in the adjacent room.

Refer to the Laws, Rules and Wiring Standards of North Dakota for additional information.