Thailand NBTC SDoC: The Fast-Track for Wireless Hardware (2026)
Not every wireless device entering Thailand requires a formal, lengthy certification review from the NBTC. For lower-risk equipment, the Supplier's Declaration of Conformity (SDoC) offers a significantly faster and cheaper route to market—provided you don't mess up the paperwork.
Executive Summary: Quick Answers
- What is SDoC? A self-declaration process for low-power wireless devices.
- Lead Time: Usually 1-2 weeks (vs. 4-6 weeks for Class A/B).
- Local Testing: Physical in-country testing is not required; ISO 17025 accredited CE/FCC reports are accepted.
- Local Representative: A Thai registered entity is still strictly mandatory to sign and submit the SDoC.
Engineers design products to optimize physical laws, which are logical and permanent. Compliance, however, requires navigating regulatory laws, which are bureaucratic and occasionally baffling. The SDoC process is Thailand's attempt to make life easier for short-range device manufacturers. Let's look at how it works.
What is an SDoC?
The Supplier's Declaration of Conformity (SDoC) is a self-declaration process where the local importer (supplier) formally confirms that the product complies with Thailand's technical standards. Unlike "Class A" or "Class B" certification, the NBTC does not issue a formal paper certificate; instead, the supplier maintains the technical file and submits a notification to the NBTC.
Don't let the word "self-declaration" fool you. You cannot simply print a piece of paper, slap it in the box, and ship. The SDoC must be formally filed and acknowledged by the NBTC before your goods hit customs.
Product Scope: Is Your Device Eligible?
The SDoC route is generally reserved for low-power, short-range devices (SRD). This includes:
- Bluetooth Low Energy (BLE) Devices: Fitness trackers, smart bulbs, wireless mice.
- Wi-Fi 2.4GHz/5GHz Devices: Most standard routers and smart home tech (depending on specific output power limits).
- NFC & RFID Equipment: Smart cards and access readers.
- Specific SRD Bands: 433MHz and 920-925MHz hardware.
The SDoC Process
Technical Verification
Review lab reports (CE/FCC) to ensure they meet NBTC technical requirements. The lab must be ISO/IEC 17025 accredited.
Supplier Declaration
The local Thai representative signs the official SDoC form (Form MorSor.01) taking legal responsibility for the product's compliance.
Online Notification
Submit the declaration and technical summary to the NBTC portal and wait for acknowledgment.
Labeling for SDoC
Even SDoC products must carry the NBTC compliance mark. However, the wording and format on the label differ from that used for Class A/B certified products. Typically, SDoC products require the Radio Communications Act (RCA) mark and a QR code linking to the declaration. Using the "Certification" label on an "SDoC" product is a violation and will ensure your product becomes intimately familiar with a customs warehouse shelf.
Frequently Asked Questions (FAQ)
Do I still need a local representative for SDoC?
Yes. The application must be submitted by a Thai national or a juristic person established under Thai law. Foreign companies cannot file an SDoC independently.
Can I just use my FCC/CE reports?
Yes, NBTC accepts test data conducted to international standards (like FCC or CE) provided the testing laboratory holds ISO/IEC 17025 accreditation and the tested frequencies align with Thai allocations.
What happens if I ship an SDoC device without filing?
Customs will flag the shipment. Without the acknowledged NBTC filing receipt, the goods cannot be legally imported or sold, leading to costly storage fees or rejection.
How HertzWeg Simplifies SDoC
Submitting an unvetted technical file to a foreign regulator is like throwing a message in a bottle into the ocean and hoping it washes up on the correct beach. HertzWeg provides the mandatory Thai Local Representative to sign your SDoCs. We handle the technical review to ensure your FCC/CE reports are sufficient for NBTC, preventing the need for costly local testing when it isn't legally required.
Need a Thai Representative?
We provide full NBTC SDoC management and local representation.
Consult Our Team