Manufacturers need to be aware of the validity period of Thailand type approval. This will determine how long telecom and wireless devices can be legally marketed and used in this country.
What do you need to know after the NBTC certificate is issued? That is its validity period. By considering the validity period of Thailand type approval, you can estimate the certificate renewal. That way, your devices will always be legal to market and use in the country.
In this case, the criteria are set by the NBTC or the National Broadcasting and Telecommunications Commission. This authority regulates the approval process for telecommunications devices entering and circulating in the country.
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Certification Process
Before learning about the validity period of Thailand type approval, it is important to understand how the certificate is issued. The issuance of NBTC certificates is fairly quick through paperwork, but it should not be underestimated.
This process includes document compliance, test report evaluation, and certification submission.
Document requirements
The following is a list of documents required for NBTC certification applications:
- Application form specified by the NBTC Office
- Company registration certificate of the applicants (less than 90 days old)
- ID card or passport of the authorized director issued by the Thai authority
- Applicant’s username and password issued by the Department of Business Development (DBD)
- Power of attorney authorization letter
- Catalogue or technical specifications
- Test reports, approval certificate, or certificate of conformity
- Laboratory accreditation certificate
- Equipment photos show front, back, sides, logo, and type/model of the equipment
Basically, each type of NBTC certification class, Class A, Class B, or SDoC, has the same documents. The only difference is Class B, which requires an NBTC certificate to be attached if one is available.
Document submission and evaluation
Once the document requirements for Thailand type approval have been collected and prepared, the documents must be sent to the authorities. Since Thailand does not yet have an online submission procedure, the documents must be sent directly to the NBTC Office.
After the NBTC Office receives the complete set of documents, they will be evaluated. If the evaluation is successful, the certificate will be issued immediately. If not, the applicant must complete the missing or incorrect documents before resubmission for re-evaluation.
Certificate issuance
When the Thai type approval certificate is issued, it means that your product has officially obtained permission to be marketed and used in Thailand. The date of issuance of the certificate becomes the effective date of the Thai type approval certificate.
The following is an example of an NBTC certificate:


The lead time for Thailand type approval through the paperwork method is relatively short. For Class A or Class B type documentation in Thailand, the waiting time is approximately six weeks. Meanwhile, for SDoC, certification is usually completed within two to four business days.
Labeling
Thailand NBTC certification labeling requirements mandate that compliance labels be affixed to all registered products, user manuals, or packaging. Labels for Class A and Class B will include the class type and NTC ID.
The NTC ID consists of a six-digit registration number, year of registration, and a four-digit supplier code. Meanwhile, the SDoC label will contain a statement that the product has met certain Thai standards.
Certification marks or labels must not be placed arbitrarily on communication equipment. For Class A and Class B, labels must be affixed to the surface of the product in a place that is easily visible and not easily removed. For SDoC products, the statement must be attached to the user manual or other supporting documents accompanying the product.
Validity Period of Thailand Type Approval
Understanding the validity period of Thailand type approval is closely related to marketing planning in this country. Basically, all types of NBTC certificates have no expiration date.
This means that the certificate is valid indefinitely, provided that there are no modifications to the RF certification of the equipment. If there are modifications to the equipment, certification is required by following the same process as the initial certificate application.
Modifications that affect recertification include replacing the transmitter antenna, changing the transmission power or RF wave characteristics, replacing existing interface cards, or adding new interface cards.
The NBTC pays special attention to modified devices to ensure that the latest product models remain compliant with applicable Standards and Technical Specifications.
That is the information regarding the validity period of Thailand type approval. Understanding the validity period of Thailand type approval and the conditions that need to be applied for a new one means you will not be caught with the possibility of illegal products circulating in the market.
If you have difficulty understanding NBTC certification, you can consult with Dimulti. Our services will assist you from the document submission process to the delivery of documents directly to the NBTC Office. That way, you will have no trouble with RF type approval issues.
With over 15 years of experience and an extensive international network, we can help you enter global markets efficiently and effectively.
Additionally, we offer pre-testing and real-time process monitoring services, which are rarely provided by other service providers. Pre-testing helps reduce the risk of laboratory testing failures, while our Project Management System (PMS) ensures transparency and allows you to monitor the entire process in real time.












