N.J. Stat. § 34:4-2: Approval of device

Every device, before being used or installed as required by section 34:4-1 of this title in any building within the jurisdiction of the department of labor, under the labor laws, shall have the approval of the commissioner.

Every such device before being used or installed in any other building shall have the approval of the commissioner, except in municipalities having a regularly appointed building inspector, in which case the approval of the building inspector shall be sufficient.