STS Certification

What the STS Certification Actually Is

Smart Technology Systems (STS) is a technician-level certification for people who install, wire, configure, and troubleshoot connected systems in homes and light commercial buildings. It is issued by ETA International, an association best known for credentialing electronics and communications technicians. The scope covered on this page is the Basic STS credential, the entry point of ETA's smart home certification family.

That distinction matters. ETA's smart home program also includes separate endorsements and a higher-level integrator credential, but the Basic STS exam is its own stand-alone assessment. Its content comes from a published set of competency requirements, and ETA states that its examination questions derive from those competencies. If you want a broader orientation before going deeper, the overview articles on what STS certification is and what STS stands for cover the naming and positioning.

Who Issues It and Who It Fits

ETA International governs the credential, while ETA Certification Administrators handles testing. The Basic STS is aimed at practicing technicians: people pulling low-voltage cable, terminating connectors, mounting devices, connecting systems to networks, and walking customers through what was installed. ETA's Credly badge for the credential describes the earner as a practicing technician, though it does not quantify a minimum amount of experience.

Typical candidates include:

• Installers and technicians at home technology integration companies
• Low-voltage and security installers broadening into smart home work
• Electricians and cable technicians who want a recognized credential for connected-home systems
• Apprentices and junior technicians seeking a documented baseline of skills

For a look at where this credential shows up in hiring, see the STS jobs overview.

Exam Snapshot: Format, Fees, and Rules

The table below consolidates the verified logistics. Where ETA does not publish a detail, the table says so rather than guessing.

Two points deserve emphasis. First, the question count is published as a range, so anyone quoting a single exact number for the core exam is going beyond the public record. Second, ETA has not publicly specified an item-type breakdown, so do not assume the exam is entirely multiple choice; prepare to read each question carefully either way. For the passing threshold and how to think about it, the STS passing score article goes deeper, and the STS pass rate article explains why no verified success rate exists.

The 12 Competency Areas in Detail

ETA publishes the Basic STS competency requirements as twelve numbered top-level headings. The source document is dated May 25, 2022, and no separately numbered 2026 exam version has been verified. Importantly, no percentage weights are published, so no single domain can be called the heaviest. Treat all twelve as fair game, and use the complete guide to all 12 STS content areas for deeper coverage of each.

Registration and Test-Day Mechanics

ETA lets you test in person at an approved site using Trapeza online testing or paper and pencil, or remotely with ExamRoom.AI proctoring arranged through ETA. Remote candidates need a webcam, a microphone, a suitable computer, and reliable connectivity. The two-hour remote proctoring adds USD 16 on top of the USD 105 exam fee; local proctor charges at in-person sites are not quoted, so ask your site directly. Scheduling details and windows are covered in the STS exam dates article.

On test day, expect these rules:

1. A proctor is required, and you must present photo ID.
2. Scratch paper and a nonprogrammable or scientific calculator are allowed; used scratch paper must be surrendered.
3. Personal electronic devices such as phones are prohibited.
4. ETA's general rules prohibit leaving the room once testing starts, so handle everything beforehand.

ETA has not publicly verified the STS-specific open or closed-book rule or whether the test is adaptive. Confirm both with your test site before exam day instead of assuming.

Prerequisites Versus Recommendations

Basic STS is a stand-alone certification. ETA does not require the Associate CET (CETa) or ETA membership. The competency document does highly recommend prior certification in areas such as CAT, DCI, DVE, FOI, FOT, FOT-OSP, or TTT, but these are recommendations only. No mandatory degree, fixed training hours, experience hours, or references were verified. Candidates are expected to accept ETA's Code of Conduct.

In practice, that means a motivated technician with hands-on cabling and installation experience can sit for the exam directly. The STS requirements guide lays out eligibility in more detail, and STS training covers ways to build the underlying skills if you are newer to the field.

Sequencing Your Prep Around the Domains

Because the exam is a written test drawn from the competency list, your best preparation is converting each of the twelve headings into a checklist you can explain aloud. Here is one way to sequence the work so that foundational topics come before the ones that build on them. For a fuller plan, see the STS study guide, and for a compact refresher near exam day, the STS cheat sheet.

Do not skip the softer domains. Premises restoration and customer documentation can look easy, but they are exactly the topics that experienced installers sometimes underprepare for because they handle them by habit rather than by definition. For a realistic read on effort, the STS difficulty guide is a useful companion.

Using official versus unofficial materials

ETA advertises a USD 59.95 study resource in its STS section, but the publicly linked eITPrep catalog visibly identifies the Security and Surveillance endorsement course rather than a separate Basic STS course, so core-course availability is unverified. Do not treat the endorsement course as your Basic STS syllabus. ETA's membership page does list member practice-exam access for STS, but membership is not mandatory and a practice exam is not the same as access to real certification questions. For additional practice, you can run through questions on the STS practice test site and track which domains cause hesitation.

Keeping the Credential Active

The certification term is four years, and maintenance is required. For general non-hands-on maintenance, ETA asks for:

• The maintenance form
• USD 25 per year, or USD 100 over the four-year cycle
• Either 10 continuing-education contact hours per year (40 over the cycle) or an Employer Verification Form completed by a supervisor

ETA recommends submitting annually rather than waiting until the end of the cycle. Spreading the fee and the continuing-education hours across four years is far easier than assembling everything at once, and it keeps your record current if an employer asks you to verify status.

Career Fit and Hiring Context

Smart Technology Systems credentials are most relevant where connected-home installation is part of the business model: home technology integrators, low-voltage contractors, security and surveillance installers, and electrical contractors adding smart home services. A recognized baseline credential helps a hiring manager quickly gauge that a candidate understands safe installation, wiring, customer orientation, and troubleshooting, not just device setup.

Because no verified salary or hiring-volume data tied specifically to Basic STS appears in ETA's public sources, avoid relying on blanket earnings claims. The STS salary guide and the STS ROI analysis discuss how to evaluate the credential against your own market and employer, and the STS jobs page covers the roles where it appears. If you are weighing the value of the credential, think in terms of what it unlocks locally: employer preference, customer trust, and a documented foundation for pursuing endorsements later.

Frequently Asked Questions