What does the FCC SDoC mean for the ETENWOLF V3 Air Inflator?

The FCC Supplier's Declaration of Conformity (SDoC) means that the V3 Air Inflator has been tested and confirmed to comply with FCC CFR 47 Part 15 Subpart B limits for electromagnetic emissions. This authorizes the product to be legally imported, marketed, and sold in the United States without causing harmful interference to other electronic equipment or radio communications.

What is report number WTH25H05129147E and who issued it?

Report number WTH25H05129147E is the unique reference assigned to the FCC EMC test report for the V3 Air Inflator. It was issued by Waltek Testing Group HCT (Shenzhen) Co., Ltd. on 2025-05-29, following testing conducted on 2025-05-26 at their accredited laboratory in Longgang District, Shenzhen, China.

Which emission tests were performed on the V3 Air Inflator?

Two types of emission tests were performed: Conducted Emission — measuring electromagnetic noise transmitted through the power line — and Radiated Emission — measuring electromagnetic energy radiated into free space. Both tests were conducted per FCC CFR 47 Part 15 Subpart B and both returned a Pass result.

Does the FCC SDoC certification cover all markets worldwide?

No. The FCC SDoC under CFR 47 Part 15 Subpart B is specific to the United States market. For sale in the European Union, the product requires CE marking with an EMC Declaration of Conformity under the EU EMC Directive 2014/30/EU. Other markets such as South Korea require KC certification.

FCC-SDoC Test Report WTH25H05129147E — ETENWOLF V3 Air Inflator EMC Compliance

Document Overview

Document Overview This article covers the official FCC Supplier’s Declaration of Conformity (SDoC) test report issued for the ETENWOLF V3 Air Inflator. The report was prepared by Waltek Testing Group HCT (Shenzhen) Co., Ltd., an accredited electromagnetic compatibility (EMC) test laboratory located in Longgang District,…

Document type: Certification Report
Prepared by: Michelle Torres
Published: July 21, 2026
Last reviewed: July 21, 2026
Topics: North America: FCC / UL

Document Overview

This article covers the official FCC Supplier’s Declaration of Conformity (SDoC) test report issued for the ETENWOLF V3 Air Inflator. The report was prepared by Waltek Testing Group HCT (Shenzhen) Co., Ltd., an accredited electromagnetic compatibility (EMC) test laboratory located in Longgang District, Shenzhen, Guangdong, China.

Field	Detail
Reference Number	WTH25H05129147E
Test Report Form	TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01
Internal Lab Reference	HCT/RF-23-21
Document Type	FCC-SDoC Test Report
Issuing Body	Waltek Testing Group HCT (Shenzhen) Co., Ltd.
Date Sample Received	2025-05-22
Date of Test	2025-05-26
Date of Issue	2025-05-29
Overall Test Result	Pass

The scope of this report covers Conducted Emission and Radiated Emission measurements performed in accordance with FCC CFR 47 Part 15 Subpart B. The document spans 29 pages and includes test data, measurement uncertainty declarations, equipment lists, and photographic appendices of the Equipment Under Test (EUT) and test setup.

Product Information

The Equipment Under Test (EUT) is the ETENWOLF V3 Air Inflator, a portable cordless inflation tool designed for inflating car tires, bicycle tires, sports balls, and other inflatables. The product is manufactured and supplied by Guangdong Bestek Technology Co., Ltd.

Attribute	Value
EUT Name	Air Inflator
Model Number	V3
Trade Mark	N/A
Applicant	Guangdong Bestek Technology Co., LTD
Manufacturer	Guangdong Bestek Technology Co., LTD
Applicant Address	No.1, North Gaopu 8th Road, Yuancheng Industrial Park, Heyuan City, Guangdong, P.R. China
Operating Mode 1	Charging
Operating Mode 2	USB Port Discharge

The V3 operates in multiple modes including battery charging and USB port discharge, both of which were exercised during testing to ensure the most representative emissions profile was captured. No equipment modifications were made to the EUT prior to or during testing.

Key Details

The test report covers two primary EMC disciplines: Conducted Emission and Radiated Emission. Both test categories were completed on 2025-05-26 and both returned a Pass result against the applicable FCC limits.

Conducted Emission

Conducted emission measurements assess unwanted electrical noise transmitted back onto the mains power lines from the EUT. The test was performed according to FCC CFR 47 Part 15 Subpart B limits for unintentional radiators. The report section (pages 8–12) includes:

Measurement uncertainty declaration
Applicable conducted emission limits
EUT setup configuration
Instrument setup details
Full test data tables with corrected amplitude values and pass/fail margins
Complete test equipment list with calibration references

Radiated Emission

Radiated emission measurements assess electromagnetic energy radiated directly from the EUT into free space. Testing was conducted in a qualified test facility. The report section (pages 13–22) includes:

Measurement uncertainty declaration
Applicable radiated emission limits
EUT and test receiver setup configurations
Test procedure description
Corrected amplitude and margin calculations
Full test data with frequency, amplitude, limit, and margin columns
Test equipment list with calibration traceability

Test Personnel

Role	Name
Tested By	Snow Zeng
Approved By	Tony Wu

Standards & Compliance

The ETENWOLF V3 Air Inflator was evaluated against the following regulatory standard:

Standard	Scope	Result
FCC CFR 47 Part 15 Subpart B	Unintentional Radiators — Conducted and Radiated Emission limits for digital devices and switching power supplies	Pass

FCC CFR 47 Part 15 Subpart B sets the legal electromagnetic emission limits for unintentional radiators sold in the United States market. Compliance with this standard allows the applicant to affix the FCC mark and issue a Supplier’s Declaration of Conformity (SDoC), authorizing the product for import and sale in the US without requiring a formal FCC grant of equipment authorization.

The test report form used — TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01 — is the standardized reporting template aligned with ANSI C63.4 measurement methodology for conducted and radiated emissions from unintentional radiators operating below 30 MHz (conducted) and up to 1 GHz or 40 GHz (radiated), depending on the highest fundamental frequency of the EUT.

A formal Decision Rule was applied (Section 2.6 of the report) to account for measurement uncertainty when determining pass/fail outcomes, ensuring conservative and reproducible compliance decisions.

Validity & Certification Body

Issuing Laboratory

Field	Detail
Laboratory Name	Waltek Testing Group HCT (Shenzhen) Co., Ltd.
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
Telephone	0755-84616666
Service Hotline	400-0066-989
Email	[email protected]
Website	http://www.hct-test.com

Report Validity

The test report reference WTH25H05129147E was issued on 2025-05-29 and is valid for the specific model V3 as tested. Under FCC SDoC rules, the declaration remains valid as long as the product design, components, and manufacturing processes remain unchanged from the tested configuration. Any hardware revision or change in operating firmware that could affect emissions requires re-evaluation.

The report covers 29 pages in total and includes photographic evidence of the EUT (Appendix A) and the test setup (Appendix B), providing full traceability of the tested sample to the issued result.

Frequently Asked Questions

What does the FCC SDoC mean for the ETENWOLF V3 Air Inflator?: The FCC Supplier’s Declaration of Conformity (SDoC) means that the V3 Air Inflator has been tested and confirmed to comply with FCC CFR 47 Part 15 Subpart B limits for electromagnetic emissions. This authorizes the product to be legally imported, marketed, and sold in the United States without causing harmful interference to other electronic equipment or radio communications.
What is report number WTH25H05129147E and who issued it?: Report number WTH25H05129147E is the unique reference assigned to the FCC EMC test report for the V3 Air Inflator. It was issued by Waltek Testing Group HCT (Shenzhen) Co., Ltd. on 2025-05-29, following testing conducted on 2025-05-26 at their accredited laboratory in Longgang District, Shenzhen, China.
Which emission tests were performed on the V3 Air Inflator?: Two types of emission tests were performed: Conducted Emission — measuring electromagnetic noise transmitted through the power line — and Radiated Emission — measuring electromagnetic energy radiated into free space. Both tests were conducted per FCC CFR 47 Part 15 Subpart B and both returned a Pass result.
Does the FCC SDoC certification cover all markets worldwide?: No. The FCC SDoC under CFR 47 Part 15 Subpart B is specific to the United States market. For sale in the European Union, the product requires CE marking with an EMC Declaration of Conformity under the EU EMC Directive 2014/30/EU. Other markets such as South Korea require KC certification. ETENWOLF pursues multi-market compliance to support global distribution of the V3 and other inflation tools.