Low Voltage Technician Job Description: Duties, Template & Pay (2026)

A low voltage technician installs, programs and services the limited-energy systems in a building: structured cabling and networks, security and access control, video surveillance, fire alarm, nurse call, audio-visual and similar systems. Most low voltage jobs specialize in one or two of those. This page gives you a low voltage technician job description template, versions for fire alarm technicians and security system installers, how licensing and certification work, BLS pay, interview questions and what it costs to reach technicians on social.

What a low voltage technician does

“Low voltage” is a trade term, not a federal occupation. BLS splits the work across several occupations. The closest are security and fire alarm systems installers (SOC 49-2098), where O*NET lists alarm technician, fire alarm technician, security installer and security technician among reported job titles, and telecommunications equipment installers and repairers, except line installers (SOC 49-2022), which covers much of the network and cabling side. Pay figures on this page describe those occupations, not low voltage technicians as a single group.

O*NET's tasks for security and fire alarm systems installers describe the job well: “Mount and fasten control panels, door and window contacts, sensors, or video cameras, and attach electrical and telephone wiring to connect components,” “Feed cables through access holes, roof spaces, or cavity walls to reach fixture outlets, positioning and terminating cables, wires, or strapping,” and “Test backup batteries, keypad programming, sirens, or other security features to ensure proper functioning or to diagnose malfunctions.”

Low voltage technician duties

• Read drawings, riser diagrams and work orders, and plan cable routes
• Pull, dress, label and terminate copper and fiber cable; install racks, patch panels and jacks
• Install and connect devices: cameras, card readers, door hardware, sensors, speakers, displays, wireless access points
• Mount raceway and conduit, drill and firestop penetrations as required
• Program panels, controllers, recorders and software, and connect systems to the network
• Test and certify cable runs, and test and commission systems
• Troubleshoot and repair faults on service calls
• Explain systems to customers and train end users
• Keep as-built records, test results and service reports
• Follow jobsite safety rules, including ladder and lift safety

Low voltage technician job description template

Copy this into your ATS or job board, replace the bracketed fields and delete the system lines you do not install. The sections after it cover fire alarm and security system roles.

Fire alarm technician job description

A fire alarm technician installs, inspects, tests and services fire alarm and signaling systems: control panels, initiating devices such as smoke and heat detectors and pull stations, notification appliances such as horns and strobes, and monitoring connections. Work is governed by the adopted edition of NFPA 72, the National Fire Alarm and Signaling Code, the National Electrical Code and your state and local fire code, and inspections and tests are documented for the building owner and the authority having jurisdiction.

• Install and wire panels, devices and notification appliances to the approved drawings
• Program panels and verify device addresses and sequences
• Perform scheduled inspection, testing and maintenance, and write up deficiencies
• Troubleshoot ground faults, open circuits and trouble signals
• Coordinate with sprinkler contractors, monitoring centers and building staff during tests

Certification. The National Institute for Certification in Engineering Technologies (NICET) offers a Fire Alarm Systems certification in four levels, I through IV, covering “system layout (plan preparation), system equipment selection, system installation, system acceptance testing, system troubleshooting, system servicing, and system technical sales.” NICET also offers a separate Inspection and Testing of Fire Alarm Systems certification. Some states tie fire alarm licensing to NICET levels. The Utah State Fire Marshal, for example, states that “NICET Level II Certification is equivalent to the Fire Alarm Technician and a NICET Level III or IV is equivalent to the Master Fire Alarm Technician.” Check your state fire marshal before you write the requirement.

Security system installer job description

A security system installer installs and services intrusion alarms, video surveillance and access control for homes and businesses. O*NET's tasks include consulting “with clients to assess risks and to determine security requirements,” demonstrating systems and explaining “the causes and consequences of false alarms,” and adjusting the “sensitivity of units, based on room structures and manufacturers' recommendations, using programming keypads.”

• Install and connect panels, contacts, motion sensors, cameras, recorders and card readers
• Program keypads, apps and monitoring connections, and test every zone
• Walk customers through the system and how to avoid false alarms
• Run service calls and replace batteries, devices and cameras
• Keep a clean, respectful presence in customers' homes and businesses

Residential installers work in occupied homes, so many employers require background checks. Many states license alarm companies or individual alarm installers, often through a private security or licensing board. Name the license and the check in the posting.

Licensing: what applies to low voltage work

There is no single federal license for low voltage technicians. Licensing is set by states and sometimes cities, and it varies widely. Some states include low voltage work under the electrical license, some offer a separate limited-energy or low voltage license, and some license alarm and security work through a separate board. For electricians generally, BLS notes: “Most states require electricians to pass a test and be licensed. Requirements vary by state.”

Before you post, check three things: whether your state requires a license for the systems you install, whether an unlicensed technician may work under a licensed supervisor, and whether your customers or contracts require background checks. This is general information, not legal advice.

Requirements: what to ask for, and what to drop

Requirement	What to know
State or local license	Keep where the law requires it for the work, and name it. Where a supervisor's license covers the crew, say so and hire trainees.
Years of experience	Be realiztic. Cable pulling and device installs are teachable; programming and troubleshooting take longer. Hire both levels and say which this is.
NICET or manufacturer certifications	Nice to have for most roles. Offer to pay for them instead of requiring them at hire.
Driver's license	Keep for service and field roles with a company vehicle.
Background check	Keep where state rules or customers require it, especially residential security and schools.
Physical demands	Keep: ladders, lifts, attics, ceilings, crawl spaces and lifting cable and equipment.

What low voltage technicians earn

BLS does not publish a low voltage technician wage. The closest occupations, using 2025 BLS wage data as published on O*NET OnLine:

Occupation (SOC)	Median hourly	Median annual
Security and fire alarm systems installers (49-2098)	$28.88	$60,070
Telecommunications equipment installers and repairers, except line installers (49-2022)	$30.72	$63,890
Electricians (47-2111), for comparison	$30.38	$63,190

Pay varies with the systems, the license and on-call duties. Check local postings for the specialty you are hiring before you set a range.

Interview questions for a low voltage technician

1. Walk me through a cable run from the rack to the device.

A good answer covers the route, support and separation from power, pull and bend care, labeling, termination to standard and testing. Skipping the test is a red flag.

2. A camera is offline. How do you find the problem?

Listen for a logical order: power, cable and connection, switch port, network settings, then the device itself. Swapping parts at random is the weak answer.

3. (Fire alarm) The panel shows a ground fault. What do you do?

Strong candidates describe isolating circuits to narrow it down, checking for damaged wiring or moisture and documenting the fix, and they know to notify the monitoring center before testing.

4. Which systems and platforms have you configured yourself?

Specifics matter: panel brands, access control or video platforms, and what they did in them. “All of them” is not an answer.

5. You are installing in an occupied home or school. What changes?

You want someone who talks about protecting floors and furniture, cleaning up, checking in with the customer and being careful around people. Residential security work is judged on this.

6. How do you keep up with codes and product changes?

Good answers mention manufacturer training, certification study, code updates and learning from senior technicians.

Hiring across the trades? See the electrician, electrical apprentice, cable installer, field service technician and HVAC technician job descriptions, and installer recruiting for the hiring side.

The job description is not the job ad

The template is the document for your files. The ad has to reach a technician who already has a job.

• Lead with pay, the systems you install and whether there is a company vehicle.
• Say what the work is: new construction, service, or both, and how much travel.
• Offer a real entry path. “Paid training toward NICET” or “apprentice technician” opens the pool to electricians' helpers, IT support staff and people from the military.
• Keep the form short: license, experience level and one question about systems.
• On Facebook and Instagram, job ads run in the Employment special ad category: a minimum 15-mile radius and no targeting by age, gender or ZIP code. See Meta's special ad category.

More on hiring technicians is in electrician recruiting and what makes a good job ad.

Median wages, tasks and reported job titles, 2025 BLS wage data, from O*NET OnLine: security and fire alarm systems installers 49-2098.00, telecommunications equipment installers and repairers, except line installers 49-2022.00. Electrician wage and licensing text from the BLS Occupational Outlook Handbook, Electricians, last modified 27 August 2026. Fire alarm certification from NICET. Licensing is general information, not legal advice. Cost-per-applicant and apply-rate figures: Boostpoint 2026 Social Job Advertising Benchmark, 891 managed campaigns and 1,334 campaign-months. Read at source 24 September 2026.