The certification cycle for IoT devices under EN 18031 typically ranges from 3 to 8 months, depending on the device’s risk level, functional complexity, and compliance pathway chosen. Below is a detailed analysis of the key influencing factors and typical cycles:
1. Basic Cycle Range and Risk Classification
1. Low-Risk Devices (Self-Declaration Path)
Applicable Scenarios: Smart home devices without default passwords (e.g., smart plugs), industrial sensors with only local communication.
Cycle:3-4 months
Technical Document Preparation:1-2 months (including risk assessment, security design documents, and software bill of materials SBOM).
Laboratory Testing:1-2 weeks (to verify basic requirements such as communication encryption and access control).
Self-Declaration:1-2 weeks (to submit the Declaration of Conformity and affix the CE mark).
Typical Case: A smart bulb (only Wi-Fi connected, no data storage) follows the self-declaration path, with a total cycle of about 3.5 months.
2. High-Risk Devices (Third-Party Certification Path)
Applicable Scenarios: Children’s smartwatches, smart locks with payment support, industrial control system gateways.
Cycle:6-8 months
Technical Documentation and Factory Audit:2-3 months (submission of supply chain security declarations, production process control documents, and on-site audits by notified bodies are required).
Laboratory Testing:4-6 weeks (covering network protection, privacy protection, and financial security tests, such as DDoS attack protection and biometric data encryption verification).
Rectification and Re-testing:2-4 weeks (if vulnerabilities are found during the first test, such as default passwords not being disabled, redesign and retesting are required).
Certificate Issuance:2-4 weeks (issued by EU-authorized notified bodies as a CE-RED certificate).
Typical Case: A children’s smartwatch (handling health data and mobile payments) undergoes third-party certification, with a total cycle of about 7 months.
2. Key Influencing Factors and Time Details
1. Factory Audit Requirements
High-risk devices must undergo on-site audits by notified bodies (NB), focusing on firmware signing processes, supply chain traceability, and quality management systems (such as ISO 9001). The audit takes about1-2 weeks, and if the first attempt fails, rectification may add an additional2-4 weeks.
Case: An industrial gateway took 3 weeks for re-audit after failing to implement firmware digital signing in the production process.
2. Complexity of Vulnerability Rectification
High-risk vulnerabilities (e.g., encryption protocol downgrades, plaintext transmission of payment data) must be fixed within 90 days, which may lead to multiple rounds of re-testing. For example, a smart camera due to unencrypted RTSP video streams took6 weeks for re-testing after rectification.
Low-risk vulnerabilities (e.g., incomplete logging) typically have a rectification cycle of2-4 weeks.
3. Multi-Standard Combination Certification
If a device involves multiple sub-standards (e.g., a smartwatch must comply with EN 18031-1/2/3), the testing cycle may be extended by30%-50%. For example, a smart wristband supporting NFC payments requires additional verification of transaction log integrity and anti-rollback mechanisms, extending the testing time from 4 weeks to 8 weeks.
4. Certification Agency Scheduling
Popular agencies (such as SGS and TÜV) may have laboratory testing schedules lasting up to4-6 weeks, especially as the mandatory implementation date in August 2025 approaches, which may further compress the cycle to over12 weeks.
Optimization Suggestion: Prioritize choosing agencies with dual qualifications in RED directive and EN 18031 (such as China Electric Research Institute and Weikai Testing), which can reduce referral time.
3. Cycle Optimization Strategies and Practical Cases
1. Pre-compliance Design and Modular Testing
Using the EU decision tree tool during the design phase (Decision Tree) to predict applicable sub-standards can avoid later architectural adjustments. For example, a smart lock planned for parental control features in advance, reducing rectification time by2 months.
Breaking down device functions into independent modules (e.g., communication module, data storage module) and conducting parallel testing. For example, the network protection and privacy protection modules of an industrial IoT gateway were tested simultaneously, shortening the cycle by30%.
2. Series Certification and Batch Processing
Devices in the same series (e.g., smart locks of different colors) with consistent core security designs can be packaged for certification, shortening the cycle to2-3 months. For example, a manufacturer compressed the total cycle of 5 smart locks from 20 months to 6 months through series certification.
Conditions: Hardware encryption chips, firmware versions, and permission management logic must be identical, with only non-security parameters (e.g., appearance) being differentiable.
3. Third-Party Technical Support
Collaborating with laboratories experienced in EN 18031 can reuse 30% of original test data, shortening the cycle by40%. For example, a smart camera manufacturer reduced testing time from 8 weeks to 4 weeks through collaboration with China Electric Research Institute and Weikai Testing.
4. Key Compliance Time Nodes for 2025
Mandatory Implementation Date:August 1, 2025, after which uncertified products will be prohibited from entering the EU market, and products already on the market must complete rectification within the transition period.
Recommended Start Time:
Low-Risk Devices: At least 6 months in advance (before February 2025).
High-Risk Devices: At least 10 months in advance (before October 2024).
Cost Reference:
Low-Risk Devices: Testing costs approximately15,000 – 30,000 euros, with total compliance costs (including document preparation) around50,000 euros.
High-Risk Devices: Testing costs over50,000 euros, with factory audit fees around10,000 euros / time, with total costs potentially exceeding150,000 euros.
5. Common Misconceptions and Risk Avoidance
Default Password Issues: If a device allows users not to set a password, it must follow the third-party certification path, extending the cycle by1-3 months.
Access Control for Children’s Devices: Devices that do not implement parental permission levels must submit for special review, increasing the cycle by2-4 weeks.
Financial Device Security Updates: Using digital signatures alone or access control is insufficient to meet EN 18031-3, requiring multiple mechanisms, which may lead to extended testing time by2 weeks.
By systematically integrating security design, optimizing certification pathways, and allowing ample rectification time, companies can compress the certification cycle to within **80%** of the industry average while meeting EU compliance requirements. It is recommended to establish cross-department compliance teams that combine technological innovation with process optimization to ensure cybersecurity throughout the entire lifecycle.
* This article is a technical popularization article (not a commercial promotion), containing some AI-generated content, for reference only; for technical questions, please contact the platform operation personnel for modifications.
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