2AQ5R-HM-5USpeakerphone

Shenzhen KTC Commercial Display Technology Co.,LTD. Covered Equipment Certification Attestation Letter 9/9/2024 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2AQ5R-HM-5U Shenzhen KTC Commercial Display Technology Co.,LTD. (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Shenzhen KTC Commercial Display Technology Co.,LTD. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Liu Huan Title: Certification Engineer Company Name: Shenzhen KTC Commercial Display Technology Co.,LTD. Date: 9/9/2024

Shenzhen KTC Commercial Display Technology Co.,LTD. * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter September 18, 2024 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2AQ5R-HM-5U Per section 2.911(d)(7) of the FCC rules, Shenzhen KTC Commercial Display Technology Co.,LTD. (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. Designated agent* for service of process: Company Name: EMCTEK Physical U.S. Company Address: 11788 Big Canyon Ln, San Diego, CA 92131 USA Agent name: Fang Liu Agent Email Address: [email protected] FRN: 0033401829 The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Designated Agent Signed: (Required, if different to Applicant): Signed: Signed: Printed name: Liu Huan Printed name: Fang Liu Title: Certification Engineer Title: Manager Company Name: Shenzhen KTC Commercial Display Technology Co.,LTD. Company Name: EMCTEK Date: September 14, 2024 Date: September 14, 2024 FRN Code: 0027827005 FRN Code: 0033401829

Shenzhen KTC Commercial Display Technology Co.,LTD. Date: Sept. 9, 2024 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID:__2AQ5R-HM-5U ____ Product Name:__Speakerphone ____ Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...) • Schematics • Block Diagram • Operation Description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Signature: Name: Liu Huan Company: Shenzhen KTC Commercial Display Technology Co.,LTD. Address: No.4023,Northern Wuhe Road,Bantian Street, Longgang District,Shenzhen City,Guangdong Province,P.R. Phone: 86-755-33615330 Fax: / Email: [email protected]

CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel: +86-755-27521059 Fax: +86-755-27521011 http://www.sz-ctc.org.cn Page 1 of 4 External Photographs Page 2 of 4 Report No.: CTC2024198601 Page 2 of 4 Page 3 of 4 Report No.: CTC2024198601 Page 3 of 4 Page 4 of 4 Report No.: CTC2024198601 Page 4 of 4

CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel: +86-755-27521059 Fax: +86-755-27521011 http://www.sz-ctc.org.cn Page 1 of 1 Label Label Location

CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel: +86-755-27521059 Fax: +86-755-27521011 http://www.sz-ctc.org.cn Page 1 of 6 Internal Photographs Page 2 of 6 Report No.: CTC2024198601 Page 2 of 6 Page 3 of 6 Report No.: CTC2024198601 Page 3 of 6 Page 4 of 6 Report No.: CTC2024198601 Page 4 of 6 BT ANT1 BT ANT2 Page 5 of 6 Report No.: CTC2024198601 Page 5 of 6 Page 6 of 6 Report No.: CTC2024198601 Page 6 of 6

CTC Laboratories, Inc. $CNAS$ Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel: +86-755-27521059 Fax: +86-755-27521011 Http://www.sz-ctc.org.cn CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel.: (86)755-27521059 Fax: (86)755-27521011 Http://www.sz-ctc.org.cn For anti-fake verification, please visit the official website of Certification and Accreditation Administration of the People’s Republic of China : yz.cnca.cn Maximum Permissible Exposure Evaluation FCC ID: 2AQ5R-HM-5U According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) Radiation as specified in §1.1307(b). EUT Specification Applicant: Shenzhen KTC Commercial Display Technology Co.,LTD. Address: No.4023,Northern Wuhe Road,Bantian Street, Longgang Dis-trict,Shenzhen City,Guangdong Province,P.R. Product Name: Speakerphone Trade Mark: / Model/Type Reference: HM-5U Listed Model(s): / Model Differences: / Frequency Band (Operating) BT: 2402MHz ~ 2480MHz Device Category Portable (<5mm separation) Mobile (>20cm separation) Fixed (>20cm separation) Others ___ Exposure Classification Occupational/Controlled exposure (S=5mW/cm 2 ) General Population/Uncontrolled exposure (S=1mW/cm 2 ) Antenna Diversity Single antenna Multiple antennas TX diversity RX diversity TX/RX diversity Antenna Gain (Max) 1.72dBi Evaluation Applied MPE Evaluation SAR Evaluation Page 2 of 2 Report No.: CTC2024205903 CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel.: (86)755-27521059 Fax: (86)755-27521011 Http://www.sz-ctc.org.cn For anti-fake verification, please visit the official website of Certification and Accreditation Administration of the People’s Republic of China : yz.cnca.cn Limits for Maximum Permissible Exposure (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) (A) Limits for Occupational/Controlled Exposure 300-1500 -- -- F/300 <6 1500-100000 -- -- 5 <6 (B) Limits for General Population/Uncontrolled Exposure 300-1500 -- -- F/1500 <30 1500-100000 -- -- 1 <30 Calculation Method Friis transmission formula: Pd=(P out *G)/(4*Pi*R 2 ) Where: Pd= Power density in mW/cm 2 P out = output power to antenna in mW G= gain of antenna in linear scale Pi= 3.1416 R= distance between observation point and center of the radiator in cm Pd limit of MPE is 1mW/cm 2 . If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result Mode Frequency (MHz) Antenna Gain (dBi) Maximum Power (dBm) Tune Up Tolerance (dB) Max. Tune Up Power (dBm) Power Density at 20cm (mW/cm 2 ) Limit (mW/cm 2 ) BT/EDR 2480 1.72 4.98 ±1 6.00 0.0012 1 BLE 2M 2480 1.72 0.98 ±1 2.00 0.0005 1 Two BT modules can transmit simultaneously. Mode Frequency (MHz) Power Density at 20cm (mW/cm 2 ) Total Power density at 20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result BT/EDR 2480 0.0012 0.0024 1 Pass 2480 0.0012 Note: 1. Calculate in the worst-case mode. 2. Max. Tune Up Power is declared by manufacturer, and used to calculate. 3. For a more detailed features description, please refer to the RF Test Report. **********************THE END**********************

Antenna Specification 1. Antenna Describe Antenna Manufacturer Shenzhen KTC Commercial Display Technology Co.,LTD. Address No.4023,Northern Wuhe Road,Bantian Street, Longgang District,Shenzhen City,Guangdong Province,P.R Antenna Model HM-5U Antenna Type PCB Antenna Antenna Gain 1.72dBi Max Frequency Rang 2400-2480MHz VSWR ≤2 Input Impedance 50Ω 2. External View Drawing 3. Measurement Result 3.1 Test Setup 3.2 S11 Parameter 3.3 Antenna test data Frequency (MHz) Gain (dBi) Efficiency (%) 2400 1.72 47 2410 1.51 47 2420 1.13 45 2430 0.85 45 2440 0.88 46 2450 1.18 47 2460 1.03 46 2470 1.03 46 2480 0.83 47 3.4 Antenna test diagram 3D Pattern 2400MHz 3D Pattern 2440MHz 3D Pattern 2480MHz

CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua Dis- trict, Shenzhen, Guangdong, China Tel: +86-755-27521059 Fax: +86-755-27521011 Http://www.sz-ctc.org.cn TEST REPORT Report No. ··························: CTC2024205902 FCC ID································: 2AQ5R-HM-5U Applicant····························: Shenzhen KTC Commercial Display Technology Co.,LTD. Address·······························: No.4023,Northern Wuhe Road,Bantian Street, Longgang Dis- trict,Shenzhen City,Guangdong Province,P.R. Manufacturer························: Shenzhen Bluesource Electronics Technology Co., Ltd Address·······························: Building 5A1103, Huaqiang IdeaPark, Guangming District, Shen- zhen, China Product Name······················: Speakerphone Trade Mark···························: / Model/Type reference·············: HM-5U Listed Model(s) ·····················: / Standard·····························: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of receipt of test sample...: Aug. 23, 2024 Date of testing.......................: Aug. 23, 2024 ~ Sept. 14, 2024 Date of issue.........................: Sept. 14, 2024 Result.................................: PASS Compiled by: (Printed name+signature) Jim Jiang Supervised by: (Printed name+signature) Eric Zhang Approved by: (Printed name+signature) Totti Zhao $英文检测章$ $Totti$ Testing Laboratory Name......: CTC Laboratories, Inc. Address...............................: Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China This test report may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product endorsement by CTC. The test results in the report only apply to the tested sample. The test report shall be invalid without all the signatures of testing engineers, reviewer and approver. Any objections must be raised to CTC within 15 days since the date when the report is re- ceived. It will not be taken into consideration beyond this limit. The test report merely correspond to the test sample. Page 2 of 61 Report No.: CTC2024205902 CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel.: (86)755-27521059 Fax: (86)755-27521011 Http://www.sz-ctc.org.cn For anti-fake verification, please visit the official website of Certification and Ac- creditation Administration of the People’s Republic of China : yz.cnca.cn Table of Contents Page 1. TEST SUMMARY ......................................................................................................................................... 3 1.1. TEST STANDARDS ................................................................................................................................................. 3 1.2. REPORT VERSION ................................................................................................................................................. 3 1.3. TEST DESCRIPTION ............................................................................................................................................... 3 1.4. TEST FACILITY ...................................................................................................................................................... 4 1.5. MEASUREMENT UNCERTAINTY ............................................................................................................................... 4 1.6. ENVIRONMENTAL CONDITIONS ............................................................................................................................... 5 2. GENERAL INFORMATION ............................................................................................................................ 6 2.1. CLIENT INFORMATION ........................................................................................................................................... 6 2.2. GENERAL DESCRIPTION OF EUT ............................................................................................................................. 6 2.3. ACCESSORY EQUIPMENT INFORMATION ................................................................................................................... 7 2.4. OPERATION STATE ................................................................................................................................................ 8 2.5. MEASUREMENT INSTRUMENTS LIST ........................................................................................................................ 9 3. TEST ITEM AND RESULTS ........................................................................................................................... 10 3.1. CONDUCTED EMISSION ....................................................................................................................................... 10 3.2. RADIATED EMISSION ........................................................................................................................................... 13 3.3. BAND EDGE EMISSIONS (RADIATED) ...................................................................................................................... 23 3.4. BAND EDGE AND SPURIOUS EMISSIONS (CONDUCTED) ............................................................................................. 32 3.5. BANDWIDTH ..................................................................................................................................................... 43 3.6. CHANNEL SEPARATION ........................................................................................................................................ 48 3.7. NUMBER OF HOPPING CHANNEL ..........................…

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CTC Laboratories, Inc. Room 101 Building B, No. 7, Lanqing 1st Road, Luhu Community, Guanhu Subdistrict, Longhua District, Shenzhen, Guangdong, China Tel: +86-755-27521059 Fax: +86-755-27521011 http://www.sz-ctc.org.cn Page 1 of 2 Radiated Measurements Below 1GHz Above1GHz Page 2 of 2 Report No.: CTC2024198601 Page 2 of 2 Conducted Emissions