(1)
Where more than one smoke alarm is required in a dwelling unit, the smoke alarms shall be wired so that the activation of one alarm will cause all alarms within the dwelling unit to sound.
(2)
Smoke alarms in a house with a secondary suite shall be wirelessly interconnected or interconnected by hard-wiring so that the activation of any one smoke alarm causes all smoke alarms within the house with a secondary suite to sound. (See Note A-9.10.19.5.(2))