(a) Fraud or bribery in securing a license;
(b) The making of any false statement as to a material matter in any application or other statement or certificate required by or pursuant to this article;
(c) Incompetency;
(d) Failure to display the license as provided in this article;
(e) Violation of any provision of this article, or of any rule or regulation adopted hereunder;
(f) Conviction of a felony involving fraud, theft, perjury or bribery or other cause which would permit disqualifications from receiving a license upon the original application. 2. Whenever the license to engage in the business of installing, servicing or maintaining security or fire alarm systems is revoked, such license shall not be reinstated or reissued until after the expiration of a period of five years from the date of such revocation.