RFID Device NBTC Certification

RFID devices sold in Thailand require NBTC certification under the RFID application. The certification type — SDoC (Supplier's Declaration of Conformity) or Class A (Registration) — depends on both the operating frequency band and the transmit power of the device. Three of the four permitted RFID bands have power-based certification splits.

How NBTC Classifies RFID Devices

The NBTC governs RFID equipment under NBTC TS 1010-2560, covering four frequency bands commonly used in RFID systems: low frequency (LF), high frequency (HF), 433 MHz, and ultra-high frequency (UHF) at 920–925 MHz. Each band has its own power limits. For three of these bands, the certification type is determined by whether the device's transmit power is at or below — or above — a specified threshold.

Certification Requirements

Band	Frequency Range	Transmit Power	Max Transmit Power	Certification	Standard
LF	0.009–0.135 MHz	≤ 150 mW eirp	150 mW eirp	SDoC	NBTC TS 1010-2560
LF	0.009–0.135 MHz	> 150 mW eirp	7,500 mW eirp	Class A	NBTC TS 1010-2560
HF	13.553–13.567 MHz	≤ 10 mW eirp	10 mW eirp	SDoC	NBTC TS 1010-2560
HF	13.553–13.567 MHz	> 10 mW eirp	1,000 mW eirp	Class A	NBTC TS 1010-2560
UHF (433 MHz)	433.05–434.79 MHz	—	10 mW	SDoC	NBTC TS 1010-2560
UHF (920 MHz)	920–925 MHz	≤ 50 mW eirp	50 mW eirp	SDoC	NBTC TS 1010-2560
UHF (920 MHz)	920–925 MHz	> 50 mW eirp	4,000 mW eirp	Class A	NBTC TS 1010-2560

Power split explained: For LF, HF, and 920 MHz UHF bands, the certification type is determined by the device's actual transmit power relative to the threshold — not just the band it operates in. A low-power HF RFID reader at 8 mW requires SDoC; a high-power HF reader at 100 mW requires Class A. The 433 MHz band has no power split — SDoC applies regardless of transmit power within the permitted maximum.

What This Covers

The RFID application covers readers, writers, and integrated RFID modules operating across permitted bands. Typical products include:

LF RFID readers and access control systems (125 kHz)
HF RFID readers and NFC-enabled devices (13.56 MHz)
UHF RFID readers and inventory management systems (920–925 MHz)
Fixed and handheld RFID readers
RFID-enabled smart cards and contactless payment terminals
Industrial RFID readers for asset tracking and logistics

Note on IoT devices using 920 MHz: Non-RFID wireless IoT devices that also operate in the 920–925 MHz band are governed by a separate NBTC application (Non-RFID) with similar power-based certification splits. See the IoT Device page for those requirements.

Required Documents

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

SDoC

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

Also uses 920–925 MHz band

IoT Device

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Ready to certify your RFID device for Thailand?

Zergo manages the full NBTC certification process for RFID devices — including power-threshold determination, document preparation, local representative filing, and approval delivery.

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