ETSI

ETSI — European Telecommunications Standards Institute

ETSI (European Telecommunications Standards Institute) is one of the three official European Standards Organisations (ESOs), alongside CEN (European Committee for Standardisation) and CENELEC (European Committee for Electrotechnical Standardisation). ETSI’s specific domain is telecommunications, broadcasting, and related technologies — making it the primary standards body for virtually every wireless product that requires CE marking under the Radio Equipment Directive.

When a hardware manufacturer tests their Wi-Fi device against EN 300 328, verifies Bluetooth compliance, or tests a cellular product against the EN 301 908 series — they are working with ETSI standards. The RED cybersecurity standards (EN 18031) are the exception: they come from CEN-CENELEC.

Key Facts

ETSI’s Role in EU Product Compliance

ETSI operates within the EU New Legislative Framework (NLF) as a mandated standards body. When the European Commission needs a harmonised technical standard to support a directive or regulation, it issues a standardisation request (formerly called a mandate) to ETSI, CEN, or CENELEC.

For telecommunications and radio products — the core of CE-marked electronics — the typical flow is:

Commission standardisation request → ETSI Technical Committee → Draft ETSI EN
        ↓
Public enquiry and weighted vote by national standards organisations
        ↓
Published as ETSI EN (European Standard)
        ↓
European Commission evaluates and publishes reference in OJEU
        ↓
Cited harmonised standard — presumption of conformity for the requirements it covers

Key ETSI Standards for Hardware Engineers

ETSI produces thousands of standards, but the following are the most directly relevant for hardware manufacturers targeting CE marking and EU market access:

Radio Spectrum Standards (RED Article 3(2))

EMC Standards (RED Article 3(1)(b) / EMC Directive)

Cybersecurity Standards

EN 18031 is a CEN-CENELEC (JTC 13) series, listed here for completeness — it is not an ETSI standard.

Other Notable ETSI Output

How ETSI Standards Are Structured

ETSI standards use a consistent reference format:

[TYPE] [NNN NNN] V[major].[minor].[editorial] ([year]-[month])

Example: ETSI EN 300 328 V2.2.2 (2019-07)

• EN — European Standard
• 300 328 — Standard number
• V2.2.2 — Version 2, second minor revision, second editorial revision
• (2019-07) — Published July 2019

When referencing ETSI standards in a Declaration of Conformity or technical file, always include the full version number. Citing only “EN 300 328” without a version is insufficient — the version determines which specific version was applied and whether it is current.

ETSI Technical Committees Relevant to Hardware

ETSI organises its technical work into committees. The committees most relevant for hardware CE marking are:

Free Access to ETSI Standards

Unlike ISO, IEC, or national standards (DIN, BS, NF), ETSI standards are freely downloadable from etsi.org. This is a deliberate policy based on the principle that standards supporting regulatory compliance should be freely accessible. A manufacturer can download EN 300 328, EN 301 893 and EN 303 645 at no cost. EN 18031 is a CEN-CENELEC standard and has to be purchased from a national standards body.

ETSI Membership and Influence

ETSI membership includes hardware manufacturers, telecom operators, chipset vendors, test labs, regulators, and government bodies. Member organisations can participate in technical work and vote on standards. For hardware manufacturers, ETSI membership provides:

• Early visibility of upcoming standards changes
• Ability to influence standards requirements during development
• Technical access to working groups and expert networks

Related Terms

• OJEU — The EU gazette where ETSI standards are referenced to gain harmonised status and presumption of conformity.
• EN 300 328 — ETSI’s primary 2.4 GHz radio standard.
• EN 301 893 — ETSI’s primary 5 GHz Wi-Fi standard.
• EN 303 645 — ETSI’s consumer IoT cybersecurity baseline standard.
• EN 18031 — CEN-CENELEC’s harmonised cybersecurity standard series for the RED Delegated Act (not an ETSI standard).
• RED — Radio Equipment Directive; ETSI develops the vast majority of standards harmonised under RED.

Understanding which ETSI standard applies to your product — and which version is currently referenced in the OJEU — is a prerequisite for accurate CE marking declarations. Inovasense maintains current knowledge of ETSI standard versions and transition periods as part of our EU compliance services, ensuring technical files cite the correct, currently-valid harmonised standard versions.

Official References

• ETSI — European Telecommunications Standards Institute — ETSI official website