Document Overview
Document Overview This article summarises the FCC Supplier’s Declaration of Conformity (SDoC) test report issued for the ETENWOLF C2PRO Wireless Portable Tire Pump. The report was prepared by Waltek Testing Group HCT (Shenzhen) Co., Ltd. (HCT), an accredited electromagnetic compatibility (EMC) testing laboratory located in…
- Document type
- Certification Report
- Prepared by
- Michelle Torres
- Published
- Last reviewed
- Topics
- North America: FCC / UL
Document Overview
This article summarises the FCC Supplier’s Declaration of Conformity (SDoC) test report issued for the ETENWOLF C2PRO Wireless Portable Tire Pump. The report was prepared by Waltek Testing Group HCT (Shenzhen) Co., Ltd. (HCT), an accredited electromagnetic compatibility (EMC) testing laboratory located in Longgang District, Shenzhen, Guangdong, China.
| Field | Detail |
|---|---|
| Reference Number (Primary) | WTH25H11289149 |
| Reference Number (Supplementary) | WTH25H11289149E |
| Document Type | FCC Supplier’s Declaration of Conformity (SDoC) Test Report |
| Test Report Form Number | TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01 |
| Internal Form Reference | HCT/RF-23-21 |
| Date Sample Received | 2025-11-03 |
| Date of Testing | 2025-11-04 to 2025-11-06 |
| Date of Issue | 2025-11-11 |
| Overall Test Result | Pass |
The report covers two EMC disciplines under FCC CFR 47 Part 15 Subpart B: conducted emissions and radiated emissions. Both were evaluated against the applicable FCC limits and the equipment under test (EUT) passed all measurements.
Product Information
The equipment under test (EUT) is the ETENWOLF C2PRO, a wireless portable tire pump designed for inflating vehicle tires and other inflatables without a wired power connection.
| Field | Detail |
|---|---|
| Product Name | Wireless Portable Tire Pump |
| Model Number | C2PRO (C2pro) |
| 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 |
As a wireless device, the C2PRO is subject to FCC unintentional radiator requirements. The SDoC process requires the responsible party to ensure the product complies with FCC Part 15 Subpart B limits for both conducted and radiated electromagnetic emissions before placing the product on the US market.
Key Details
The test report is structured into four major technical sections plus appendices. The table below outlines the scope of each section as documented in the report.
| Section | Title | Key Content |
|---|---|---|
| 1 | General Information | EUT description, test standards, test summary, methodology, facility details, and version history |
| 2 | System Test Configuration | Justification for test configuration, EUT exercise software, equipment modifications, basic configuration of test system, auxiliary equipment description, and application of decision rule |
| 3 | Conducted Emission | Measurement uncertainty, emission limits, EUT setup, instrument setup, test procedure, equipment list, and test data (Pages 8–12) |
| 4 | Radiated Emission | Measurement uncertainty, emission limits, EUT setup, test receiver setup, test procedure, corrected amplitude and margin calculation, equipment list, and test data (Pages 13–20) |
| Appendix A | EUT Photographs | Photographic record of the equipment under test (Pages 21–24) |
| Appendix B | Test Setup Photographs | Photographic record of the test configuration as executed in the lab (Pages 25–26) |
The decision rule applied throughout the report follows the standard EMC assessment practice: a measurement result is considered compliant when the corrected amplitude (including measurement uncertainty) remains below the applicable FCC limit. All conducted and radiated emission readings for the C2PRO met this criterion across the full evaluated frequency range.
Standards & Compliance
The ETENWOLF C2PRO 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 placed on the US market | Primary test specification for this report |
FCC CFR 47 Part 15 Subpart B establishes emission limits for unintentional radiators — devices that generate radio frequency energy as a by-product of their operation rather than for the purpose of radio communication. Portable tire pumps with electronic motor control circuits fall within this category.
Two emission types were assessed:
- Conducted Emissions: RF energy conducted back onto the mains power lines, measured over the frequency range applicable to the device’s power interface.
- Radiated Emissions: RF energy radiated into free space from the device and its associated cables, measured at a calibrated test distance in a qualified test facility.
The test report form used is TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01, and the overall test result is recorded as Pass.
Validity & Certification Body
The test report was issued by Waltek Testing Group HCT (Shenzhen) Co., Ltd., a professional third-party EMC and safety testing laboratory.
| Field | Detail |
|---|---|
| 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 |
| Telephone | 0755-84616666 |
| Service Hotline | 400-0066-989 |
| [email protected] | |
| Website | http://www.hct-test.com |
| Report Prepared By | Snow Zeng |
| Report Approved By | Tony Wu |
| Date of Issue | 2025-11-11 |
| Report Reference | WTH25H11289149E |
Under the FCC SDoC framework, the responsible party (in this case Guangdong Bestek Technology Co., LTD as applicant and manufacturer) retains the test report and makes a declaration of conformity based on its results. The report does not carry a fixed expiry date, but remains valid for the product configuration tested. Any hardware modification to the C2PRO that could affect electromagnetic emissions would require re-evaluation.
Frequently Asked Questions
- What does FCC SDoC mean for the C2PRO tire pump?
-
FCC SDoC (Supplier’s Declaration of Conformity) means that Guangdong Bestek Technology Co., LTD has tested the C2PRO at an accredited laboratory and declares that it complies with FCC CFR 47 Part 15 Subpart B emission limits. This authorises the product to be legally sold and operated in the United States without causing harmful interference to other electronic equipment.
- Which tests were performed under Report No. WTH25H11289149E?
-
Report WTH25H11289149E covers two EMC tests: conducted emission testing (measuring RF energy fed back onto power lines) and radiated emission testing (measuring RF energy broadcast into free space). Both tests were performed at HCT’s Shenzhen facility between 2025-11-04 and 2025-11-06, and the C2PRO passed both.
- Who performed the FCC EMC testing for the C2PRO?
-
The testing was conducted by Waltek Testing Group HCT (Shenzhen) Co., Ltd., located in Longgang District, Shenzhen, China. The report was prepared by Snow Zeng and approved by Tony Wu. HCT is a professional third-party testing laboratory specialising in EMC, RF, and safety evaluations.
- Does this FCC report expire, and what happens if the product is modified?
-
FCC SDoC test reports do not carry a mandatory expiry date. However, if the C2PRO undergoes any hardware or firmware changes that could alter its electromagnetic emission characteristics, the responsible party must re-evaluate the modified product and update the declaration accordingly. The current report (WTH25H11289149E, issued 2025-11-11) is valid for the exact product configuration tested.
Related Documents
The following certification and compliance documents are typically required or recommended for a wireless portable tire pump such as the ETENWOLF C2PRO sold in international markets:
- FCC ID Certificate — Required if the C2PRO incorporates an intentional radiator module (e.g., Bluetooth). Complements the SDoC covered in this report.
- CE Declaration of Conformity (DoC) — Required for sale in the European Economic Area, covering IEC/ISO EMC and low-voltage directives.
- UN 38.3 Battery Transport Test Report — Mandatory for products containing lithium-ion batteries intended for air or ground freight shipping.
- KC Certification — Required for entry into the South Korean market, covering electromagnetic compatibility and electrical safety.
- RoHS Compliance Report — Confirms restriction of hazardous substances (lead, mercury, cadmium, etc.) in the product’s electrical and electronic components.
- REACH Declaration — Confirms compliance with EU REACH regulation regarding substances of very high concern (SVHCs) in the product.
- Battery Safety Certification (IEC 62133) — Safety standard for portable sealed secondary lithium cells and batteries used in portable applications.
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