North Carolina General Statutes Chapter 15A. Criminal Procedure Act § 15A-288. Manufacture, distribution, possession, and advertising of wire, oral, or electronic communication intercepting devices prohibited

(a) Except as otherwise specifically provided in this Article, a person is guilty of a Class H felony if the person:

(b) It is not unlawful under this section for the following persons to manufacture, assemble, possess, purchase, or sell any electronic, mechanical, or other device, knowing or having reason to know that the design of the device renders it primarily useful for the purpose of the surreptitious interception of wire, oral, or electronic communications:

(c) An officer, agent, or employee of, or a person whose normal and customary business is to design, manufacture, assemble, advertise and sell electronic, mechanical and other devices primarily useful for the purpose of the surreptitious interceptions of wire, oral, or electronic communications, exclusively for and restricted to State and federal investigative or law enforcement agencies and departments.