CE Marking for Electronics: Complete EMC and Low Voltage Directive Guide

If you manufacture or import electronics for the European market, you need to comply with at least two directives: the Electromagnetic Compatibility (EMC) Directive and the Low Voltage Directive (LVD). If your product has wireless capabilities, the Radio Equipment Directive (RED) applies too. This guide covers what electronics manufacturers need to know about CE compliance — from testing requirements to documentation. For a complete overview of the CE certification process, see my CE certification guide.

The EMC Directive (2014/30/EU) — Emissions and Immunity

The EMC Directive requires that electronic products don’t emit excessive electromagnetic interference (emissions) and can function properly in the presence of normal electromagnetic fields (immunity). Testing covers: conducted emissions (150kHz-30MHz), radiated emissions (30MHz-6GHz), electrostatic discharge (ESD), radiated immunity, electrical fast transient/burst, surge immunity, and voltage dips/interruptions. Most consumer electronics use harmonized standards EN 55032 (emissions) and EN 55035 (immunity).

The Low Voltage Directive (2014/35/EU) — Safety

The LVD applies to electrical equipment operating between 50-1000V AC or 75-1500V DC. It covers: electric shock protection, mechanical hazards, fire prevention, overheating protection, radiation hazards, and chemical hazards. Key harmonized standards: EN 62368-1 (audio/video/ICT equipment), EN 60335 (household appliances), and EN 60598 (lighting). The LVD doesn’t apply to products under 50V AC or 75V DC, but those still need CE under other applicable directives.

The Radio Equipment Directive (2014/53/EU) — Wireless Products

If your electronic product includes wireless functionality (WiFi, Bluetooth, Zigbee, NFC, 4G/5G, LoRa, etc.), RED applies in addition to EMC and LVD. RED covers: effective use of radio spectrum, EMC, and safety. Testing includes: RF output power, frequency range, bandwidth, spurious emissions, receiver sensitivity, and EMC+safety as applicable. RED is harmonized through standard EN 303 645 series for IoT devices and EN 300 328 for 2.4GHz wideband systems.

Testing Requirements and Costs

EMC testing: $1,000-5,000 per directive. LVD/safety testing: $2,000-8,000 depending on product complexity. RED testing (wireless): $3,000-15,000 depending on frequency bands and technologies. Full pre-compliance testing for all three directives: $6,000-28,000. Pre-compliance scanning (in-house) can reduce final test costs by identifying issues early. See my CE certification cost guide for a detailed breakdown.

Common Electronics CE Compliance Mistakes

Assuming RED replaces EMC (it doesn’t — RED has its own EMC requirements and you still need LVD). Not testing with the exact production power supply (different PSUs affect emissions). Using non-certified external adapters. Missing RF exposure assessment for wireless products. Not labeling the product with required information. I cover all of these in my CE marking mistakes guide.

References

1. EU EMC Directive 2014/30/EU — Full text and harmonized standards for EMC compliance.
2. IECEE Global Testing — International electronic testing standards and CB Scheme certificate recognition.

The transition period for standards updates is something many electronics manufacturers overlook. When a harmonized standard like EN 62368-1 is updated, you typically have 3-36 months to transition your Technical File and retest if necessary. Missing this window means your CE marking becomes invalid. I recommend subscribing to the Official Journal of the European Union (OJEU) notifications and reviewing your applicable standards list every quarter.