Vehicle Radar NBTC Certification

Vehicle radar sensors — used in automotive safety systems such as adaptive cruise control, blind spot detection, and collision avoidance — require NBTC certification before they can be sold in Thailand. The certification type is SDoC (Supplier's Declaration of Conformity) or Class A (Registration), depending on the operating frequency band and transmit power of the sensor.

How NBTC Classifies Vehicle Radar

The NBTC governs vehicle radar under NBTC TS 1011-2560, covering three frequency ranges used in modern automotive radar. The certification path differs by band: the 24 GHz range has a power-based split between SDoC and Class A; all other vehicle radar bands require Class A registration.

Certification Requirements

Frequency Range	Transmit Power	Max Transmit Power	Certification	Standard
22,000–26,650 MHz	—	−41.3 dBm/MHz eirp (limit curve)	Class A	NBTC TS 1011-2560
24,050–24,250 MHz	≤ 10 mW eirp	10 mW eirp	SDoC	NBTC TS 1011-2560
24,050–24,250 MHz	> 10 mW eirp	100 mW eirp (10 < X ≤ 20 dBm eirp)	Class A	NBTC TS 1011-2560
76,000–77,000 MHz	—	316,227.77 mW (55 dBm eirp)	Class A	NBTC TS 1011-2560
77,000–81,000 MHz	—	316,227.77 mW (55 dBm eirp)	Class A	NBTC TS 1011-2560

Note on the 24 GHz band: The 24,050–24,250 MHz sub-band appears within the wider 22–26.65 GHz range. These are separate entries in the NBTC classification — a sensor operating specifically within 24,050–24,250 MHz at or below 10 mW eirp qualifies for SDoC. Sensors operating across the broader 22–26.65 GHz range require Class A regardless of power.

What This Covers

The Vehicle Radar application covers radar sensors integrated into or sold for use in road vehicles. Typical products include:

Adaptive cruise control (ACC) radar modules
Blind spot monitoring (BSM) sensors
Forward collision warning and automatic emergency braking sensors
Rear cross-traffic alert sensors
Short-range 24 GHz parking assistance radar
Long-range 77–79 GHz automotive radar modules

Not automotive radar? General-purpose radar equipment for weather, industrial level measurement, or similar applications is governed by the separate Radar application. See the Radar page for those requirements.

Required Documents

Document requirements depend on the certification type applicable to your device.

SDoC (24,050–24,250 MHz, ≤ 10 mW eirp only)

Technical specification / datasheet with wireless communication details
Product photographs (exterior and label)
Test report from an accredited laboratory
Authorised declaration (manufacturer or authorised representative)

Class A

Technical specification / datasheet with wireless communication details
Product photographs (exterior and label)
Test report from an accredited laboratory outside Thailand
ISO/IEC 17025 accreditation certificate and laboratory scope
Authorised declaration (manufacturer or authorised representative)

Class A registration requires a local representative — a Thai juristic person holding a valid NBTC trade license and NBTC Supplier Code — to file on behalf of the overseas manufacturer. Zergo provides this as part of its certification service.

Estimated Timeline

SDoC:Approximately 1 week from submission

Class A:Approximately 5 weeks from submission

Non-automotive radar — different cert path

Radar

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Ready to certify your vehicle radar for Thailand?

Zergo manages the full NBTC certification process for vehicle radar — from band and power classification through local representative filing and approval delivery.

View NBTC Certification Service →