IN Florida there is a required license for low voltage installations and they are.

So KUMBA You need education on the laws of Florida

EF - An "alarm system contractor I" means an alarm system contractor whose business includes all types of alarm systems for all purposes.

EG - An "alarm system contractor II" means an alarm system contractor whose business includes all types of alarm systems other than fire, for all purposes.

EY (EH)* - A "registered alarm system contractor I" means an alarm system contractor whose business includes all types of alarm systems for all purposes. A registered "alarm system contractor I" may contract only in the cities and/or counties for which his or her registration is issued.
*EY and EZ are the alpha letters currently being used. No new licenses are issued with EH and EI, however old licenses with these designation can be renewed.

EZ (EI)* - A "registered alarm system contractor II" means an alarm system contractor whose business includes all types of alarm systems, other than fire, for all purposes. A "registered alarm system contractor II" may contract only in the cities and/or counties for which his or her registration is issued.
*EY and EZ are the alpha letters currently being used. No new licenses are issued with EH and EI, however old licenses with these designations can be renewed.

EJ - A "registered residential alarm system contractor" means an alarm system contractor whose business is limited to burglar alarm systems in single-family residential, quadruplex housing, and mobile homes of a residential occupancy class. A "registered residential alarm system contractor" may contract only in the cities and/or counties for which his or her registration is issued.

ER - A "registered electrical contractor" means an electrical contractor who has registered with the department pursuant to fulfilling the competency requirements in the jurisdiction for which the registration is issued. A "registered electrical contractor" may contract for electrical systems, including all specialty categories, only in the cities and/or counties for which his or her registration is issued. A "registered electrical contractor" MAY NOT contract for any alarm system.

ES - A "specialty contractor" means a contractor whose scope of practice is limited to a specific segment of electrical or alarm system contracting, including, but not limited to: elevator specialist (class code 066), utility line electrical specialist (class code 068), low voltage system specialist (class code 069), residential electrical contracting (class code 043), maintenance of electrical fixtures (class code 065), and fabrication, erection, installation, and maintenance of electrical advertising signs (class code 067).

ET - A "registered electrical specialty contractor" elevator specialist (class code 066), utility line electrical specialist (class code 068), low voltage system specialist (class code 069), residential electrical contracting (class code 043), maintenance of electrical fixtures (class code 065), and fabrication, erection, installation, and maintenance of electrical advertising signs (class code 067). A "registered electrical specialty contractor" may contract only in the cities and/or counties for which his or her registration is issued.