B4O-QC35XFNXGT-tronics QCC Bluetooth Module

GT-tronicsHKLimited Rev1/26/2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:August16,2023 Ref: AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:B4O‐QC35XFNX GT‐tronicsHKLimited(“theapplicant”)certifiesthattheequipmentforwhichauthorizationissoughtis not“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules. Sincerely, DennisWong GT-tronicsHKLimited Rev1/26/2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:August16,2023 Ref: AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:B4O‐QC35XFNX GT‐tronicsHKLimited(“theapplicant”)certifiesthat,asofthedateofthefilingoftheapplication,the applicantisnot identifiedontheCoveredList(asaspecificallynamedentityoranyofitssubsidiariesor affiliates)asanentityproducing“covered”equipment. Sincerely, DennisWong

GT-tronics HK Limited Date: Aug 3, 2023 TO: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Request for Modular Approval FCC ID: B4O-QC35XFNX Item Requirements EUT Confirm (Yes/No) 1 Have its own RF shielding The EUT has been shielded, please refer the EUT photos. Yes 2 Have buffered modulation/data inputs (if such inputs are provided) The modular data inputs are buffered through log or microcontroller connections. All modulation and data inputs are buffered by circuitry on the transmitter chip. Yes 3 Have its own power supply regulation Power supply regulation is provided by circuitry on the CPU chip. Yes 4 Meet the antenna requirements of section 15.203 The EUT meet the FCC antenna requirements, the modular with a special joint antenna connector. And the antenna Is descripted is module user manual. Yes 5 Demonstrate compliance in a stand-alone configuration The TUE is can transmitting Stand-alone. Yes 6 The licensed module must have a FCC ID label on the module itself. That FCC ID label must be visible through a window on the final device or it must be visible when an access panel, door or cover is easily removed. If not, a second label must be placed on the outside of the final device. The module is labeled with its permanently affixed FCC ID label. The label position is clearly indicated. Please refer to label & label location information. Yes 7 The module must comply with all specific rules applicable to the transmitter. The grantee must provide comprehensive instructions to explain compliance requirements. The EUT is full compliant with FCC rules, please refer the details in user manual. Yes 8 The module must comply with RF exposure requirements. See FCC Rules. Spread Spectrum transmitters must comply with RF exposure limits in 15.247. This module is complies with FCC CFR 47 part 2.1091 and FCC KDB 447498 D01 General RF Exposure Guidance limit , Please refer RF exposure report. Yes Thank you for your attention to this matter. Yours Sincerely, ___________ Dennis Wong

GT-tronics HK Limited Address: B210, Tonic Industrial Center, 19 Lam Hing Street, Kowloon Bay, Hong Kong Tel.: (852) 27771786 Fax: (852) 27771134 E-mail: [email protected] Product Similarity Declaration 2023-08-21 Dear Sir/Madam, We, GT-tronics HK Limited hereby declare that we have a product named as GT-tronics QCC Bluetooth Module (Model QC356FNB-S) was tested by Shenzhen Balun Technology Co., Ltd., Meanwhile, for our marketing purpose, we would like to list series (Model QC356FNB) on reports and certificate. The hardware of QC356FNB and QC356FNB-S are the same. QC356FNB differs from QC356FNB-S in software configuration that does not affect RF performance. The difference audio codec difference that does not affect power or RF performance. We confirm that all information above is true, and we’ll be responsible for all the consequences. Please contact me if you have any question. Sincerely Yours, Signature: Name ：Dennis Wong

Date: 3 August 2023 GT-tronics HK Limited To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern: The GT-tronics HK Limited, the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the GT-tronics HK Limited solely in matters relating to the application for an FCC equipment authorization for FCC ID: B4O-QC35XFNX including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of the GT-tronics HK Limited. The GT-tronics HK Limited also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely, _______ Dennis Wong

EUT EXTERNAL PHOTOS QC356FNB-S FRONT VIEW OF EUT REAR VIEW OF EUT LEFT SIDE VIEW OF EUT RIGHT SIDE OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT Accessory FRONT VIEW OF EUT REAR VIEW OF EUT


         
                   









 FCC ID: B4O-QC35XFNX IC: 21698-QC35XFNX

EUT INTERNAL PHOTOS QC356FNB-S MAIN BOARD TOP VIEW (WITH SHIELDING) MAIN BOARD TOP VIEW (WITHOUT SHIELDING) Ceramic Chip Antenna Metal Antenna PCB Antenna Dipole Antenna 1 Dipole Antenna 2 Dipole Antenna 3 QC356FNB MAIN BOARD TOP VIEW (WITH SHIELDING)

Report No.: BL-SZ2310035-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile (2022-08-15) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China TEST REPORT Applicant: GT-tronics HK Limited Address: Unit 10, 2/F., Block B, Tonic Industrial Center 19 Lam Hing Street, Kowloon Bay, Kowloon, Hong Kong Equipment Type: GT-tronics QCC Bluetooth Module Model Name: QC356FNB-S (refer to section 2.3) Brand Name: GT-tronics FCC ID: B4O-QC35XFNX Test Standard: 47 CFR Part 2.1091 KDB 447498 D04 v01 Sample Arrival Date: Dec. 30, 2022 Test Date: Jan. 05, 2023 - Jul. 13, 2023 Date of Issue: Aug. 22, 2023 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Xiong Lining Checked by: Xu Rui Approved by: Tolan Tu (Testing Director) _______________ _______________ _______________ Report No.: BL-SZ2310035-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile (2022-08-15) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Revision History Version Issue Date Revisions Content Rev. 01 Aug. 09, 2023 Initial Issue Rev. 02 Aug. 22, 2023 1. Updated applicant address in the home page and Section 2.1. 2. Updated the note in Section 5.1. TABLE OF CONTENTS 1 GENERAL INFORMATION ......................................................................................................... 3 1.1 Test Laboratory .............................................................................................................. 3 1.2 Test Location .................................................................................................................. 3 2 PRODUCT INFORMATION ......................................................................................................... 4 2.1 Applicant Information ...................................................................................................... 4 2.2 Manufacturer Information ............................................................................................... 4 2.3 General Description for Equipment under Test (EUT) ................................................... 4 2.4 Ancillary Equipment ........................................................................................................ 4 2.5 Technical Information ..................................................................................................... 5 3 SUMMARY OF TEST RESULT ................................................................................................... 6 3.1 Test Standards ............................................................................................................... 6 4 DEVICE CATEGORY AND LEVELS LIMITS .............................................................................. 7 5 ASSESSMENT RESULT ............................................................................................................. 9 5.1 Output Power ................................................................................................................. 9 5.2 Tune-up power ............................................................................................................... 9 5.3 RF Exposure Evaluation Result ..................................................................................... 9 5.4 Conclusion ...................................................................................................................... 9 Report No.: BL-SZ2310035-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile (2022-08-15) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1 GENERAL INFORMATION 1.1 Test Laboratory Name Shenzhen BALUN Technology Co., Ltd. Address Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Phone Number +86 755 6685 0100 1.2 Test Location Name Shenzhen BALUN Technology Co., Ltd. Location Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park, No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China Accreditation Certificate The laboratory is a testing organization accredited by FCC as a accredited testing laboratory. The designation number is CN1196. Report No.: BL-SZ2310035-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 4 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile (2022-08-15) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 2 PRODUCT INFORMATION 2.1 Applicant Information Applicant GT-tronics HK Limited Address Unit 10, 2/F., Block B, Tonic Industrial Center 19 Lam Hing Street, Kowloon Bay, Kowloon, Hong Kong 2.2 Manufacturer Information Manufacturer GT-tronics HK Limited Address B210, Tonic Industrial Center, 19 Lam Hing Street, Kowloon Bay, Hong Kong 2.3 General Description for Equipment under Test (EUT) EUT Name GT-tronics QCC Bluetooth Module Model Name Under Test QC356FNB-S Series Model Name QC356FNA, QC356FNB, QC350FNA, QC350FNB, QCC350FNB-S, QC551FNA, QCC551FNB, QC551FNB-S, QCCx5xFNx, QCCx4xFNx, QCCx5xFPx, QCCx4xFPx, QCCx5xFCx, QCCx4xFCx, QCCx5xFEx, QCCx4xFEx Description of Model name differentiation All models are same with electrical parameters and internal circuit structure, but only differ in model name. (this information provided by the applicant) Hardware Version v1.0 Software Version v1.0 Dimensions (Approx.) N/A Weight (Approx.) N/A 2.4 Ancillary Equipment Note: Not applicable. Report No.: BL-SZ2310035-701 Tel: +86…

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