South Korea EMC Regulation Update for Platform Screen Door Sensors
- Dec 31, 2025
- 3 min read
South Korea has introduced an important Korea EMC regulation update affecting platform screen door (PSD) sensor systems used in rail and metro infrastructure. The new requirements aim to ensure that sensors used in PSD systems remain reliable in environments where high-frequency wireless technologies such as 5G are present.
The amendment was issued by the National Radio Research Agency (RRA) under Notification No. 2025-22 on December 31, 2025, and focuses on strengthening electromagnetic immunity standards for laser and LiDAR sensors used in PSD systems.
Korea EMC Regulation Update: What Changed?
The Korea EMC regulation update introduces new electromagnetic immunity requirements to address interference caused by broadband radio signals, particularly from 5G communications.
Two key regulatory changes were introduced:
1. Addition of Broadband RF Immunity Requirements
The amendment adds a “broadband radiated RF electromagnetic field” resistance standard to the body port resistance requirements in the EMC standard for multimedia devices (Appendix 12).
These new tests are specifically designed for laser or LiDAR sensors used in platform screen doors to ensure they maintain reliable operation when exposed to broadband wireless signals.
Key test parameters include:
Frequency range: 3400–3700 MHz
Signal type: 5G TM1.1 modulated signal (100 MHz)
Field strength levels:
20 V/m
28 V/m
38 V/m
56 V/m
80 V/m
Manufacturers must select one of the five defined test conditions when conducting EMC testing.
Testing procedures will align with the national standard KS C IEC 61000-4-41, once it is formally adopted.
Why the EMC Standard Needed Updating
The revision was prompted by reported damage and operational issues in platform screen doors caused by interference from broadband 5G signals.
PSD systems rely heavily on sensors to detect obstacles and control door movement safely. When exposed to strong electromagnetic signals, these sensors can malfunction, potentially impacting operational safety.
By introducing stricter EMC immunity requirements, regulators aim to ensure PSD sensors remain stable in increasingly dense wireless environments.
Other Regulatory Changes
In addition to the PSD sensor standard revision, two related regulatory notices were also updated:
Notice on Conformity Assessment of Broadcasting and Communications Equipment
Notice on the Designation and Management of Testing Agencies for Broadcasting and Communications Equipment
These updates support the implementation of the revised EMC testing requirements.
Implementation Timeline
Although the regulation was announced on December 31, 2025, it will not take effect immediately.
The Korean government has provided a six-month transition period to allow manufacturers, certification bodies, and testing laboratories to prepare for the new requirements.
Effective date: July 1, 2026
During the transition period, products may still comply with the previous EMC standards. After that date, the new requirements will become mandatory.
Impact on Korea Type Approval
This Korea EMC regulation update will directly affect companies seeking Korea type approval for devices used in platform screen door systems.
Manufacturers should:
Review the new EMC immunity test requirements
Update product design if necessary
Prepare for revised laboratory testing conditions
Align certification timelines with the July 2026 enforcement date
Early preparation will help ensure that products remain compliant and ready for market access in South Korea.
Conclusion
South Korea’s updated EMC requirements reflect the growing need to ensure that critical infrastructure systems operate safely in high-frequency wireless environments. As 5G and other broadband technologies expand, regulatory frameworks are evolving to protect essential safety systems such as platform screen doors.
For manufacturers and compliance teams, understanding this Korea EMC regulation update early will be key to ensuring smooth certification and uninterrupted market access.
