CA has different licenses... (C-10 for Electrical and C-7 for low voltage (<91 volts), HOWEVER: a C-10 (electrical) contractor CAN do low voltage. CA does have a seperate licencing agency for the installation of buglar/fire alarms though.
California Code of Regulations
Division 8, Title 16, Article 3. Classification
C10 – Electrical Contractor
An electrical contractor places, installs, erects or connects any electrical wires, fixtures, appliances, apparatus, raceways, conduits, solar photovoltaic cells or any part thereof, which generate, transmit, transform or utilize electrical energy in any form or for any purpose.
