CE Marking for Electronics: Requirements and Process

CE marking is a legal requirement for electronics placed on the EU market — it signifies that a product complies with applicable EU directives. Unlike FCC or TELEC, CE is not a certification issued by a third-party body: it is a self-declaration by the manufacturer or importer (the “responsible person” under EU law). Understanding this distinction matters operationally — there is no CE certificate to request from a factory, only a technical file and a signed Declaration of Conformity (DoC).

Overview

CE marking derives from the New Legislative Framework (NLF). Multiple EU directives can apply simultaneously to the same product; the responsible person must identify which directives apply and comply with all of them. The CE mark on a product declares conformity with all applicable directives.

Enforcement is via EU member-state market surveillance authorities (e.g., Germany’s BNetzA for radio, BSI for consumer safety). Penalties vary by member state but can include product withdrawal, recall, and fines. The EU Rapid Alert System (RAPEX) publicly lists CE non-compliant products — appearing on RAPEX is a serious business event.

Applicability

Three directives apply to the vast majority of electronics:

RED — Radio Equipment Directive 2014/53/EU: Applies to any product with an intentional radio transmitter — WiFi, Bluetooth, LoRa, cellular, Zigbee, Thread. This replaced the R&TTE Directive from 2017. Products under RED must also comply with RED’s Article 3 essential requirements.

LVD — Low Voltage Directive 2014/35/EU: Applies to electrical equipment designed for use with a voltage range of 50–1000V AC or 75–1500V DC. Covers most mains-powered consumer electronics. Battery-powered products below 50V AC are generally exempt from LVD, but not from RED or EMC.

EMC Directive 2014/30/EU: Applies to all electrical/electronic equipment that can cause electromagnetic disturbance or is susceptible to it. This covers almost everything with active electronics, regardless of voltage.

Additional directives for specific products: RoHS 2 (2011/65/EU), WEEE (2012/19/EU), ErP (2009/125/EC) for energy-related products.

Key Requirements

RED Article 3 essential requirements:

Article 3.1(a): Safety — EN 62368-1:2014+A11:2017 (Audio/video and IT equipment safety) or EN 60950-1 for legacy products
Article 3.1(b): EMC — EN 55032 (emissions), EN 55035 (immunity), EN 301 489 series for radio equipment
Article 3.2: Radio spectrum efficiency — product-specific ETSI standards (EN 300 328 for 2.4 GHz WLAN/BT, EN 300 220 for 868 MHz, EN 303 413 for GNSS)

EMC Directive harmonized standards:

Emissions: EN 55032 Class B (residential), Class A (industrial)
Immunity: EN 55035, EN 61000-4 series (ESD, EFT, surge, conducted immunity)

LVD harmonized standards:

EN 62368-1 (replaces EN 60950-1 and EN 60065)
EN 60335 series for household appliances

Process & Timeline

Step 1: Identify applicable directives and standards — based on product type, voltage, and radio capability.

Step 2: Test at an accredited laboratory — for CE self-declaration, you need test reports from a laboratory accredited under EN ISO/IEC 17025 for the relevant test standards. EU-accredited Chinese labs: SGS (Shanghai, Shenzhen), Bureau Veritas (Shenzhen), Intertek (Guangzhou), TÜV Rheinland (Guangzhou), TÜV SÜD. Reports from CNAS-accredited Chinese labs are generally accepted for technical files.

Step 3: Compile the Technical File — required contents:

Product description and intended use
Design drawings and component list
Risk assessment
List of applicable standards
Test reports
User manual (in all EU languages of target markets)

Step 4: Prepare and sign the Declaration of Conformity (DoC) — the DoC must state: product identification, list of directives, list of standards, responsible person name/address, date, and signature. Template format is specified in each directive’s annex.

Step 5: Affix CE marking — minimum height 5 mm, placed on product and packaging. If a Notified Body was involved (see below), the NB number follows the CE mark.

Timeline: 6–12 weeks for a straightforward wireless consumer electronics product. Testing is the bottleneck — pre-booking lab slots 4 weeks in advance is advisable.

Cost: €2,000–5,000 for a single-radio consumer device at a Chinese EU-accredited lab. Multi-radio or complex products: €5,000–10,000. Safety (LVD) testing adds €1,500–3,000. Full RED + EMC + LVD package for a mains-powered WiFi device: €6,000–12,000.

Notified Body: Required only for RED products in specific categories where no harmonized standard exists, or for Class II/III medical devices, certain PPE. For standard consumer electronics (WiFi speakers, BT earbuds, IoT modules), Notified Body involvement is not required — self-declaration suffices.

Getting It Done from China

The responsible person for CE purposes must be the EU-based manufacturer or the EU-authorized representative (EU Rep). If you are a non-EU company importing into the EU, you must appoint an EU Rep — a legal entity established in the EU that holds the technical file and DoC. EU Rep services cost €500–2,000/year per product category.

Chinese factories frequently offer “CE certificates” — these are meaningless documents. What you actually need is: (1) test reports from an accredited lab, (2) a technical file you own, (3) a DoC signed by you or your EU Rep. Do not confuse a factory’s CE claim with your legal compliance obligation. A pre-shipment inspection should include verification of CE mark placement, DoC reference numbers, and user manual language requirements.

Factory-provided CE test reports can sometimes be leveraged — if the tests were conducted at an accredited lab using current standards and cover your exact product configuration. Verify accreditation status, report date, and product description before relying on factory reports.

Common Mistakes

1. “China Export” CE marks. The CE mark stamped by many Chinese factories stands for “China Export” — it looks identical to the EU CE mark but has no legal meaning. Request the Technical File and DoC, not just the CE mark on the product.

2. Outdated harmonized standards. EN 60950-1 was withdrawn in 2020 in favor of EN 62368-1. Products still tested to withdrawn standards may not be accepted by EU authorities. Verify that your test reports cite currently harmonized standards — check the Official Journal of the EU for the valid list.

3. Missing RF performance standards. A product tested only for general EMC (EN 55032/55035) but not for radio-specific performance (EN 300 328, EN 301 489) is not RED compliant. Both general and radio-specific EMC standards are required under RED.

UKCA Marking — UK equivalent, separate requirement post-Brexit
FCC Certification — US parallel, run concurrently to save time
RoHS 2 Compliance — substance restrictions applying to same products
REACH SVHC Compliance — chemical supply chain obligations
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