N.J. Stat. Ann. § 40A:14-146.6

Any other law to the contrary notwithstanding, the identification card, badge or other identifying insignia of any person who serves as a special policeman, auxiliary policeman, civil defense worker, or who performs under the law any special police or law enforcement function in the State or any of its political subdivisions, shall clearly state the name of the agency by which any such person is employed and shall clearly distinguish any such person from the members of any regular and permanent State, county or municipal police department.