On May 2, 2026, the Official Journal of the European Union (OJEU) published Regulation (EU) 2026/892, formally incorporating EN 301 489-1 V2.4.2 (2026) into the list of harmonized standards under the CE-RED Directive. This adjustment directly affects manufacturers and export enterprises of wireless pressure transmitters targeting the EU market, especially in application areas involving low-power wide-area communication technologies such as LoRaWAN and NB-IoT, and requires immediate attention to the substantive impact of changes in testing requirements on product compliance pathways.

Event Overview

On May 2, 2026, the Official Journal of the European Union (OJEU) published Regulation (EU) 2026/892, explicitly listing EN 301 489-1 V2.4.2 (2026) as a harmonized standard under the CE-RED Directive. This standard adds two mandatory EMC immunity test items: ‘pulsed magnetic field immunity’ and ‘conducted RF immunity (150kHz–80MHz)’. The scope of applicable products is defined as pressure transmitters with wireless communication functions, including but not limited to models using LoRaWAN and NB-IoT communication protocols. The regulation takes effect immediately on the date of publication, and old EMC test reports (such as those based on EN 301 489-1 V2.3.1 or earlier versions) no longer meet the requirements for CE marking applications.

Which market segments will be affected

Direct trading enterprises

Foreign trade companies and brand owners engaged in exporting wireless pressure transmitters to Europe will directly face the risk of CE marking invalidation. The impact is mainly reflected in the following: products that have obtained old-version EMC reports will be unable to complete the signing of the CE Declaration of Conformity; inventory currently in customs clearance or pending warehousing may be denied market access by EU market surveillance authorities if testing is not updated; compliance clauses in new order contracts need to be revised accordingly, otherwise there may be potential risks of contract performance breach.

Processing and manufacturing enterprises

Sensor manufacturers undertaking OEM/ODM production must adapt their production line validation and outgoing inspection procedures to the new immunity testing conditions. The impact is mainly reflected in the following: existing EMC pre-test fixtures may not cover the conducted disturbance injection path from 150kHz–80MHz; pulsed magnetic field testing requires dedicated coils and pulse generators, and small and medium-sized manufacturers generally lack the relevant equipment and calibration capabilities; scheduling delays at third-party laboratories have already become evident, with testing cycles increasing by 5–8 working days compared with before.

Supply chain service enterprises

Service providers offering CE certification consulting, EMC testing agency services, and technical documentation preparation are facing a restructuring of service content brought about by the standard transition. The impact is mainly reflected in the following: engineers need to be retrained to master the V2.4.2 testing criteria (such as the pulsed magnetic field test level being raised to 3 A/m); existing templated technical documents (DoC, EU Declaration of Conformity) must be supplemented with declarations for the newly added test items; some customers are reworking products due to testing failures, putting pressure on service response timeliness.

What key points should relevant enterprises or practitioners pay attention to, and how should they respond at present

Confirm the testing status of products in production and in transit

Immediately sort out the full list of wireless pressure transmitter models planned for export to the EU after May 2, 2026, and verify the issue date of their EMC test reports and the standard versions used as the basis. Any report issued based on V2.3.1 or earlier versions must be scheduled for retesting; for products that have obtained CE certificates but do not list EN 301 489-1 V2.4.2, the issuing body must be contacted to initiate the standard update procedure.

Prioritize identification of high-risk materials and design links

Focus on the circuit modules involved in conducted RF immunity (150kHz–80MHz)—power input filter networks, signal conditioning PCB layouts, and grounding continuity of metal housings. Analysis indicates that the current design weak points most likely to exceed failure-rate limits are power front ends without common-mode chokes or with insufficient Y-capacitor configuration, as well as MCU wireless module areas without copper shielding or without shield cover fixation.

Reserve resources and time windows for the new-version testing

Proactively coordinate with CNAS-accredited laboratories qualified for EN 301 489-1 V2.4.2 to confirm whether their conducted RF immunity test systems have completed calibration starting from the 150kHz initial frequency; simultaneously assess internal pre-scan capabilities, and if there is temporarily no pulsed magnetic field generator available, it is recommended to prioritize commissioning a third party to carry out baseline testing to avoid delivery delays caused by failure in formal testing.

Editorial Viewpoint / Industry Observation

Observably, this regulation is not a transitional guideline, but formally locks in the technical threshold in the form of official legislation, meaning that the 2026 version EMC immunity requirements have entered the mandatory enforcement stage. Analysis shows that its core intention is to improve the operational robustness of industrial IoT devices in complex electromagnetic environments (such as around variable-frequency motor clusters and high-power switching power supplies), rather than simply raising market entry costs. What is more noteworthy at present is that market surveillance authorities in EU member states have not yet uniformly issued enforcement details, but based on past RED Directive enforcement practices, the first round of spot checks is highly likely to focus on high-frequency export categories (such as smart pressure gauges with NB-IoT), and will use complete-machine-level test results as the basis for determination, not accepting module-level exemptions. Therefore, this adjustment is more appropriately understood as a definite compliance milestone rather than a phased policy signal.

Conclusion: This update to the CE-RED harmonized standard marks the EU's electromagnetic compatibility regulation of industrial wireless sensing devices entering a more refined stage. It does not change the basic market access logic for wireless pressure transmitters, but significantly strengthens the rigidity of immunity verification under specific scenarios. At present, it is more appropriate to understand it as an implemented technical compliance requirement rather than a policy trend still awaiting observation; enterprises need to use the fact of testing standard changes as the benchmark, coordinate the pace of R&D, production, and certification as a whole, and avoid misjudging the standard transition as a routine upgrade that can be addressed later.

Description of information sources:
Main sources: Official Journal of the European Union (OJEU), original text of Regulation (EU) 2026/892; EN 301 489-1 V2.4.2 (2026) standard text (published by ETSI).
Areas requiring continued observation: the extent of traceability enforcement by market surveillance authorities in EU member states for existing inventory products, and whether non-LoRaWAN/NB-IoT wireless protocols (such as Sigfox and Wi-SUN) will also be brought into the regulatory scope simultaneously, for which no public detailed rules are yet available, requiring follow-up on supplementary announcements in the OJEU.