Effective April 28, 2026, the EU will mandatorily implement the new RF exposure assessment standard EN 62209-3:2026, requiring all wireless communication sensors entering the EU market, such as temperature and humidity, pressure, and gas sensors integrated with Wi-Fi/Bluetooth modules, to pass SAR testing using liquid simulation models containing human tissue. This change directly affects the export pathway of Chinese OEM/ODM manufacturers to Europe. Products that have not completed certification updates will not be able to affix the CE mark, and will face substantial obstacles in customs clearance and end-market listing. Niche sectors such as electronic component manufacturing, smart sensor equipment export, and CE compliance services need to pay close attention.

Event Overview

On April 28, 2026, the EU will officially begin mandatory enforcement of standard EN 62209-3:2026. This standard replaces the previous version and clearly requires that, when conducting RF exposure assessments for wireless communication sensors used in close proximity to the human body, SAR testing must be performed using liquid human tissue simulants. Applicable products include, but are not limited to, modular devices such as temperature and humidity sensors, pressure sensors, and gas sensors integrated with Wi-Fi or Bluetooth communication functions. After the standard takes effect, relevant products that have not completed testing in accordance with the new requirements and obtained a declaration of conformity may not affix the CE mark, nor may they be legally placed on the EU market.

Which Sub-industries Will Be Affected

Direct Trading Enterprises

As they directly bear responsibility for export customs declaration and market access, the compliance status of their products is directly constrained by whether EN 62209-3:2026 is met. The impact is mainly reflected in: signed orders may face delivery delays or cancellation risks; quotations for new orders must simultaneously incorporate the additional cost and lead time of SAR testing; some customers may temporarily raise technical clause requirements, resulting in contract renegotiation.

Processing and Manufacturing Enterprises （OEM/ODM manufacturers）

As the actual product manufacturers, they need to cooperate in providing essential information for SAR testing, such as complete structural components, antenna layout, and final assembly status. The impact is mainly reflected in: if the original production line design did not reserve sufficient RF isolation margin for body-close usage scenarios, it may be necessary to adjust the PCB layout, housing materials, or shielding solution; extended testing cycles will compress the delivery window for mass production; some small and medium-sized manufacturers lack in-house EMC laboratories and rely on third-party testing, facing pressure from tight booking schedules and rising costs.

Supply Chain Service Enterprises （certification consulting, testing laboratories, compliance agencies）

This standard update directly expands their business coverage and technical response threshold. The impact is mainly reflected in: test capability filings for EN 62209-3:2026 need to be updated simultaneously, and some institutions have not yet completed accreditation scope expansion; for newly added steps such as liquid tissue simulant preparation, probe calibration, and scanning system verification, service capability remains uneven in phases; customer inquiry volume is rising sharply in the short term, placing higher demands on response professionalism and timeliness.

What Key Points Should Relevant Companies or Practitioners Pay Attention To, and How Should They Respond at Present

Confirm Whether Products on Sale and Under Development Fall Within the Applicable Scope

Immediately review the product list intended for sale in the EU market that has wireless communication functions and is expected to involve body-close use scenarios, such as wearable environmental sensors, handheld gas detectors, and embedded smart home sensor nodes. Compare them against the scope definition in Chapter 4 of EN 62209-3:2026, and exclude industrial-grade long-distance sensing devices that are only for fixed installation and have no near-body operation requirements.

Check Whether Existing CE Technical Documentation Covers the New Testing Requirements

Retrieve the technical documents on which the currently valid CE declaration of conformity is based, including test reports, risk assessments, and user manuals, and confirm whether the SAR testing therein is based on EN 62209-3:2026 and the corresponding human tissue liquid simulation models, such as the head/body models defined in IEC 62704-4. If the old standard version is cited or liquid simulation testing is not included, supplementary testing and documentation update procedures must be initiated.

Assess the Impact of Key Materials and Structural Design on SAR Results

Work with hardware engineers to identify factors that may significantly affect RF coupling efficiency, for example: the spacing between the antenna and metal parts of the housing, PCB ground plane continuity, battery compartment shielding structure, and the relative position of the sensor module and the main control board. For high-risk models, it is recommended to conduct pre-scan testing in advance to avoid rework during the formal certification stage due to SAR exceedance.

Give Priority to Engaging Testing Institutions Already Recognized for EN 62209-3:2026 Qualification

Review the latest qualification scope of notified bodies in the EU NANDO database and their authorized laboratories, and confirm whether EN 62209-3:2026 testing capability is listed. Avoid commissioning institutions that only hold qualifications for the old standard version, so as to prevent test reports from not being accepted by market surveillance authorities.

Editorial Viewpoint / Industry Observation

It is evident that the mandatory implementation of EN 62209-3:2026 is not an isolated technical upgrade, but a further concretization of the EU's regulatory logic on “human RF safety”——shifting from focusing on the device's own emission characteristics to more stringent assessment of its interaction effects with human tissue under real usage scenarios. Analysis shows that this standard has already produced a clear implementation outcome at present （no exemption after April 28, 2026）, rather than being merely a policy signal still under consultation or in a transition period. From an industry perspective, the depth of its impact depends on whether a company's products fall within the intersection of “wireless + near-body use”; for sensor manufacturers focused purely on industrial on-site deployment without Bluetooth/Wi-Fi connectivity, the actual constraints are limited. A more appropriate current understanding is that this standard is pushing the compliance focus of sensor-type electronic products from traditional EMC conducted/radiated emission testing toward system-level human-centric electromagnetic compatibility （Human-Centric EMC）.

Conclusion
The implementation of EN 62209-3:2026 marks the EU's management of human RF exposure for wireless sensing devices entering a strengthened practical enforcement stage. Its industry significance does not lie in overturning the existing certification framework, but in refining the technical verification requirements under specific scenarios. It is currently more appropriate to understand it as a precision-adapted compliance upgrade: the scope of impact is clear, the technical pathway is clear, and the implementation milestones are rigid. Companies do not need generalized anxiety, but must carefully identify applicability based on actual product usage methods, and incorporate SAR testing into the early-stage evaluation process of R&D.

Information Source Notes
Main sources: the EN 62209-3:2026 standard text officially published by the European Committee for Standardization （CEN/CENELEC）; the European Commission's “Notice on the Update of Harmonised Standards Applicable to Radio Equipment Directive 2014/53/EU” （Notice No. X of 2025）. Items to continue monitoring: the specific enforcement intensity of market surveillance authorities in member states regarding existing inventory products during the transition period, as well as updated interpretations of the detailed conformity assessment pathway between EN 62209-3:2026 and Annex IV of the RED Directive.