Miss. Code Ann. § 73-69-27: Miss. Code Ann. § 73-69-27

(1) Except for requirements which pertain to all types of businesses generally, no county or municipality shall enact any new ordinance, rule or regulation regulating companies and persons subject to licensure pursuant to this chapter.

(2) This chapter shall supersede any existing county or municipal ordinance, rule or regulation requiring certification or licensure of companies and persons engaged in alarm contracting, and such ordinances, rules and regulations shall be null, void and of no effect.

(3) Additionally, this chapter shall supersede any existing county or municipal ordinance, rule or regulation requiring certification or licensure of companies and persons engaged in alarm contracting, battery-charged security fence contracting, closed-circuit video system contracting or electronic access control system contracting and such ordinances, rules and regulations shall be null, void and of no effect.

(4) Notwithstanding any other law to the contrary, a municipality or county may not adopt or enforce an ordinance, order or regulation that:

(a) Requires a permit or fee for the installation or use of a battery-charged security fence that is in addition to an alarm system permit issued by the municipality or county; no further permit or fee shall be required for the battery-charged security fence;

(b) Imposes installation or operational requirements for the battery-charged security fence that are inconsistent with the requirements and standards described in Section 73-69-5(y) ; or

(c) Prohibits the installation or use of a battery-charged security fence.