New Jersey Statutes Annotated §55:13A-7.17: 
Every unit of dwelling space in a hotel or multiple dwelling must be equipped with one or more CO alarms unless it is determined that no potential CO hazard exists for that unit.

A4073:
Requires the Commisioner of Community Affairs to promulgate rules for installation and placement of CO detection devices in every building that contains a CO-emitting source, including existing buildings.