Trade-specific question bank
Practice built around C-7 low voltage scenarios like cabling, CCTV, telecom, and building automation.
California CSLB · Classification C-7
Get your California C-7 low voltage license with trade-specific prep that stays online.
Self-paced exam prep for the California C-7 Low Voltage Systems Contractor trade exam, with optional Law & Business bundled into the same buying flow.
Focus
Low voltage trade
Trade-specific practice
Format
Self-paced online
No classroom scheduling
Bundle
Optional L&B
One checkout flow when needed
Practice low voltage scenarios across CCTV, telephone and data, satellite, audio/video, fiber, and safety, with instant rationales on every answer.
Choose 3 or 6 months of access and bundle Law & Business at a discount.
3 months access
Exam prep package
Access length
Expanded hints, follow-up questions, and help in your language when you need more context.
$20/mo
Total
$200.00
Renewal pricing (monthly)
Monthly renewal: $40.00/month ($60.00/month with AI Pro)
Renewal becomes available after your active access expires.
What you get
Practice built to feel like the exam, not a textbook.
Everything is oriented around the exams: how questions are phrased, what they test, and how to move quickly without losing accuracy.
Rationale on every answer
Short explanations connect each low voltage answer back to the why.
Readiness tracking
See progress across the C-7 outline sections before test day.
Any device, any time
Study from the office, van, jobsite, or home on phone, tablet, or desktop.
About the exam
What to know before you start.
A quick confirmation so you know you're on the right prep page before you start.
Who this prep is for
This page is for California C-7 applicants who want low voltage trade-specific practice built around the official CSLB content outline, not a licensing school.
Topics at a glance
Exam
C-7 - Low Voltage Systems Contractor
Best fit
Low voltage, structured cabling, telecom, CCTV, A/V, and fiber technicians preparing for the California trade exam
Topic focus
Job planning and design, systems configuration and installation, testing and closeout, material selection, and safety
Content status
Question bank and official sources
We keep this prep tied to CSLB documents, current code editions, and the live Test2Pro question bank.
Question bank last updated: July 2026.
When a practice item depends on a code citation, we review it against the current edition listed for this exam.
CSLB sources
The Test2Pro content team keeps these sources current.
We re-check them each quarter and whenever CSLB publishes major guide changes.
Why this format
Built for working contractors, not classrooms.
Most candidates are fitting study around jobsites and workdays. The format reflects that.
Self-paced
Study around installs and service calls instead of reshaping your week.
Online, no scheduling
Open the prep bank anytime without live class times or a prep-center appointment.
Trade-focused practice
Stay close to the C-7 low voltage exam outline instead of broad school-style instruction.
Coverage
What's inside the prep bank
Review the live coverage breakdown below to see the low voltage trade sections this prep is built around, from job planning and systems configuration to testing, closeout, and safety.
Live category coverage
Job Planning and Design
~100+ items
Material Selection and Estimation
~100+ items
Wire/Cable Installation and Termination
~200+ items
Systems Configuration and Installation
~100+ items
Testing and Project Closeout
~55+ items
System Troubleshooting, Repairs, or Replacements
~35+ items
Safety
~100+ items
Also required for most applicants
Add Law & Business when your application requires both exams.
CSLB requires qualifying individuals to pass Law & Business alongside the C-7 trade exam, and the bundle keeps both exams in one prep path.
Optional exam
Law & Business
Business organization, finances, employment, insurance, contracts, public works, and safety.
If you want it separately, See Law & Business prep
Trade-specific
Low voltage exam prep
Positioned around the California C-7 classification.
Self-paced
Online format
Built for working low voltage technicians and contractor applicants.
3 or 6
Months of access
Choose the term that fits your timeline.
Optional L&B
Bundle when needed
Add the companion business exam in the same purchase flow.
"The diagnostic showed exactly where my C-10 prep was thin. I could focus my study blocks instead of rereading everything."
MR
Marcus R.
C-10 Electrical Candidate
Common questions
Before you start.
What does a C-7 Low Voltage Systems Contractor license cover?
A C-7 contractor installs, services, and maintains communication and low-voltage systems that are energy limited and do not exceed 91 volts, including telephone, sound, cable TV, CCTV, satellite dish antennas, instrumentation and temperature controls, and low-voltage landscape lighting. Low-voltage fire alarm systems are specifically excluded and, per CSLB guidance, require a C-10 Electrical license.
Is this built specifically for the C-7 low voltage trade exam?
Yes. It is positioned for California C-7 applicants who want low voltage trade-specific practice organized around the official CSLB content outline, which covers job planning and design, material selection and estimation, wire and cable installation, systems configuration, testing and closeout, troubleshooting, and safety.
Do I need the Law & Business exam too?
Yes. CSLB describes the exam process in two parts and requires all qualifying individuals to pass the Law & Business exam in addition to the C-7 trade exam, so many applicants bundle both.
Can I take the C-7 exam online, and how many questions or what passing score should I expect?
No, the official CSLB exam is taken in person at a PSI test center, and CSLB allows 3.5 hours for each examination. CSLB does not publish a public question count or a numeric passing score for the C-7 exam; you are told the passing percentage at the test site. Test2Pro is online, self-paced prep you use before that in-person appointment.
Is Test2Pro affiliated with CSLB?
No. Test2Pro is an independent exam-prep platform and is not affiliated with, endorsed by, or an agent of CSLB.
Ready when you are
Start your C-7 low voltage prep today.
Choose the access length that fits your timeline, keep your prep online and self-paced, and add Law & Business when you need both exams covered together.