Upon receipt of the permit application and fee, the Police Department shall undertake whatever investigation is deemed necessary. If it appears that the proposed system will comply with the provisions of this chapter, the permit is issued to the applicant that includes an identifying number, the class of alarm system for which it is issued, and the expiration date of the permit. The City shall not, by the issuance of any alarm system permit, be obligated to respond or accord any priority to an alarm from such system.