What does FCC SDoC mean for the T300 / T300PLUS tire pressure gauge?

FCC SDoC (Supplier's Declaration of Conformity) means that the responsible party has tested the T300/T300PLUS against FCC CFR 47 Part 15 Subpart B and declares that the device meets all applicable emission limits. This certification is required for the product to be legally sold in the United States.

What is the test report reference number and when was it issued?

The test report reference number is WTH25H07183007E. Testing was conducted on 2025-07-15 and the report was officially issued on 2025-07-21 by Waltek Testing Group HCT (Shenzhen) Co., Ltd.

Which emission tests were conducted on the T300 / T300PLUS?

Two categories of emissions were measured: Conducted Emissions and Radiated Emissions. Both tests returned a Pass result in accordance with the limits defined under FCC CFR 47 Part 15 Subpart B.

Does this FCC report expire, and what happens if the product design changes?

An FCC SDoC declaration does not carry a fixed expiration date. However, if the T300/T300PLUS undergoes any design modification that could affect its electromagnetic emissions, re-testing and a new SDoC declaration would be required to maintain FCC compliance.

FCC-SDoC Test Report: ETENWOLF T300 / T300PLUS Electronic Tire Pressure Gauge – Reference WTH25H07183007E

Document Overview

Document Overview This page documents the FCC Supplier’s Declaration of Conformity (SDoC) test report issued for the ETENWOLF T300 / T300PLUS electronic tire pressure gauge. The report was prepared by Waltek Testing Group HCT (Shenzhen) Co., Ltd., an accredited electromagnetic compatibility (EMC) testing laboratory located…

Document type: Certification Report
Prepared by: Michelle Torres
Published: July 21, 2026
Last reviewed: July 21, 2026
Topics: Pressure & Measurement

Document Overview

This page documents the FCC Supplier’s Declaration of Conformity (SDoC) test report issued for the ETENWOLF T300 / T300PLUS electronic tire pressure gauge. The report was prepared by Waltek Testing Group HCT (Shenzhen) Co., Ltd., an accredited electromagnetic compatibility (EMC) testing laboratory located in Longgang District, Shenzhen, Guangdong, China.

Reference Number: WTH25H07183007E
Test Report Form: TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01
Internal Lab Reference: HCT/RF-23-21
Document Type: FCC Supplier’s Declaration of Conformity (SDoC)
Issuing Body: Waltek Testing Group HCT (Shenzhen) Co., Ltd.
Date of Sample Receipt: 2025-07-10
Date of Testing: 2025-07-15
Date of Issue: 2025-07-21
Overall Test Result: PASS

The report covers conducted emission and radiated emission measurements in accordance with FCC CFR 47 Part 15 Subpart B, confirming that the device does not exceed the permissible unintentional emission limits set by the Federal Communications Commission.

Product Information

The Equipment Under Test (EUT) evaluated in report WTH25H07183007E is the ETENWOLF T300 / T300PLUS electronic tire pressure gauge, manufactured and supplied by Guangdong Bestek Technology Co., Ltd.

Field	Details
Product Name	Electronic Tire Pressure Gauge
Model Number	T300 / T300PLUS
Trade Mark	N/A
Applicant	Guangdong Bestek Technology Co., Ltd.
Applicant Address	No.1, North Gaopu 8th Road, Yuancheng Industrial Park, Heyuan City, Guangdong, P.R. China
Manufacturer	Guangdong Bestek Technology Co., Ltd.
Manufacturer Address	No.1, North Gaopu 8th Road, Yuancheng Industrial Park, Heyuan City, Guangdong, P.R. China

The T300 / T300PLUS is a battery-powered electronic tire pressure gauge designed for consumer and professional automotive use. As an unintentional radiator, it is subject to FCC Part 15 Subpart B emission requirements before being marketed in the United States.

Key Details

The test report WTH25H07183007E is structured across 21 pages and covers the following major technical sections:

Section	Description	Result
1 – General Information	EUT description, test standards, test summary, methodology, facility details, and version	—
2 – System Test Configuration	Test justification, EUT exercise software, equipment modifications, basic configuration, auxiliary equipment description, and decision rule application	—
3 – Conducted Emission	Measurement uncertainty, emission limits, EUT setup, instrument setup, test procedure, equipment list, and test data	Pass
4 – Radiated Emission	Measurement uncertainty, emission limits, EUT setup, test receiver setup, test procedure, corrected amplitude and margin calculation, equipment list, and test data	Pass
Appendix A	EUT photographs	—
Appendix B	Test setup photographs	—

Both conducted emission and radiated emission measurements returned passing results, confirming that the T300 / T300PLUS electromagnetic emissions remain within the limits prescribed by FCC CFR 47 Part 15 Subpart B for unintentional radiators.

The report was prepared by Snow Zeng (Tested by) and approved by Tony Wu (Approved by) at Waltek Testing Group HCT (Shenzhen) Co., Ltd.

Standards & Compliance

The ETENWOLF T300 / T300PLUS was evaluated against the following regulatory standard:

Standard	Scope	Applicability
FCC CFR 47 Part 15 Subpart B	Unintentional radiators – conducted and radiated emission limits for digital devices	Primary applicable standard

Under FCC CFR 47 Part 15 Subpart B, unintentional radiators must not exceed defined emission limits in two categories:

Conducted Emissions: Measures RF energy conducted onto the AC power line, evaluated against frequency-dependent limits expressed in dBμV.
Radiated Emissions: Measures RF energy radiated from the device and its associated cabling, evaluated at specified distances against limits expressed in dBμV/m.

The test report form used was TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01, and a formal decision rule was applied when evaluating measurement results against prescribed limits to account for measurement uncertainty.

Validity & Certification Body

The FCC SDoC test report WTH25H07183007E was issued on 2025-07-21 by the following accredited laboratory:

Field	Details
Laboratory Name	Waltek Testing Group HCT (Shenzhen) Co., Ltd.
Laboratory Address	Building B, Tianji Industrial Park, 1/F. & 2/F. & 3/F., No.30-9, Laiyin Road, Xinsheng Community, Longgang Subdistrict, Longgang District, Shenzhen, Guangdong, China
Contact Phone	0755-84616666
Service Hotline	400-0066-989
Email	[email protected]
Website	http://www.hct-test.com
Reference Number	WTH25H07183007E
Date of Issue	2025-07-21
Tested By	Snow Zeng
Approved By	Tony Wu

Under the FCC SDoC framework, the responsible party (Guangdong Bestek Technology Co., Ltd.) declares that the T300 / T300PLUS complies with FCC Part 15 rules. The test report from Waltek Testing Group HCT serves as the technical basis for this declaration. The SDoC and supporting documentation must be retained by the responsible party and made available to the FCC upon request. There is no fixed expiration date for this type of declaration, but it remains valid as long as the product design does not change in a manner that could affect compliance.

Frequently Asked Questions

Q: What does FCC SDoC mean for the T300 / T300PLUS tire pressure gauge?: FCC SDoC (Supplier’s Declaration of Conformity) means that Guangdong Bestek Technology Co., Ltd., as the responsible party, has tested the T300 / T300PLUS against FCC CFR 47 Part 15 Subpart B and declares that the device meets all applicable emission limits. This certification is required for the product to be legally sold and marketed in the United States.
Q: What is the test report reference number and when was it issued?: The test report reference number is WTH25H07183007E. The sample was received on 2025-07-10, testing was conducted on 2025-07-15, and the report was officially issued on 2025-07-21 by Waltek Testing Group HCT (Shenzhen) Co., Ltd.
Q: Which emission tests were conducted on the T300 / T300PLUS?: Two categories of emissions were measured: Conducted Emissions (RF energy conducted onto the power line) and Radiated Emissions (RF energy radiated into the air from the device and its cables). Both tests returned a Pass result in accordance with the limits defined under FCC CFR 47 Part 15 Subpart B.
Q: Does this FCC report expire, and what happens if the product design changes?: An FCC SDoC declaration does not carry a fixed expiration date. However, if the T300 / T300PLUS undergoes any design modification that could affect its electromagnetic emissions — such as changes to circuitry, firmware, or enclosure — re-testing and a new SDoC declaration would be required to maintain FCC compliance.