N.J. Stat. Ann. § 55:13A-7.1

Every hotel and multiple dwelling shall be equipped with smoke detectors or smoke alarms or both in conformance with rules and regulations promulgated by the Commissioner of the Department of Community Affairs. Such rules and regulations shall specify the number, location, specifications, maintenance and periodic testing of smoke detectors and smoke alarms based upon the construction, size and design of such building, and any other rules and regulations which the commissioner considers necessary for the administration of this supplemental act.