Re: residential fire alarm smoke/carbon
In New Jersey it depends whether or not it is new construction or an alteration/addition. For new construction one smoke detector is required on every level, including the basement, as well as one in every bedroom, plus one in the immediate vicinity of each bedroom. All smokes are to be hardwired and interconnected. Carbon monoxide alarms are now required in single family residential as of Feb. 1st, not sure on all the details yet, but I believe it is one in the vicinity of each bedroom. Battery powered or plug in type are acceptable, but hardwired along with the smokes makes sense. Hope this helps.