2BBH2-CD23SPEAKER

FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The distance between user and products should be no less than 20cm

Test Model No.: VSA‐52

SPEAKER Model：VSA-52 Rating: 5Vdc FCC ID:2BBH2-CD23 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Test Model No.: VSA‐52

FCC ID: 2BBH2-CD23 RF Exposure Evaluation Limits 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) 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 Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = 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 id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. FCC ID: 2BBH2-CD23 Test Result of RF Exposure Evaluation BLE mode Channel Output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm2) Limit (mW/cm2) Result 2440MHz 6.06 4.04 0.0011 1.0 PASS Remark: antenna gain=1.3dBi The max power density is less than MPE exempt limit, so it is compliance.

Global United Technology Services Co., Ltd. Report No.: GTSL2023060017F01 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 27 TEST REPORT Applicant: GUANGZHOU SIYANG AUDIO CO.,LTD Address of Applicant: NO.196,EAST SANDONG AVENUE,HUASHAN TOWN, HUADU DISTRICT, GUANGZHOU CITY, CHINA Manufacturer: GUANGZHOU SIYANG AUDIO CO.,LTD Address of Manufacturer: NO.196,EAST SANDONG AVENUE,HUASHAN TOWN, HUADU DISTRICT, GUANGZHOU CITY, CHINA Equipment Under Test (EUT) Product Name: SPEAKER Model No.: VSA-52, VSA-62, VSA-32, VSA-42, VSA-72, VSA-82, VSA- 101, VSA-66, VSA-88, VSA-22, VSA-8, VSA-12, VSA-10, VSA-20, BSA-410, BSA-420, BSA-430, BSA-440, BSA-450, BSA-460, BSA-470, BSA-480, BSA-490, BSA-510, BSA-520, BSA-530, BSA-540, BSA-550, BSA-560, BSA-570, BSA-580, BSA-590, BSA-610, BSA-620, BSA-630, BSA-640, BSA-650, BSA-670, BSA-690, BSA-810, BSA-820, BSA-830, BSA-840, BSA-850, BSA-860, BSA-870, BSA-880 FCC ID: 2BBH2-CD23 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: June 02, 2023 Date of Test: June 02-15, 2023 Date of report issued: June 15, 2023 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 27 2 Version Version No. Date Description 00 June 15, 2023 Original Prepared By: Date: June 15, 2023 Project Engineer Check By: Date: June 15, 2023 Reviewer Report No.: GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 27 3 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 7 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 5.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................... 7 5.6 TEST FACILITY .................................................................................................................................... 7 5.7 TEST LOCATION ................................................................................................................................. 7 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 7 6 TEST INSTRUMENTS LIST ..................................................................................................................... 8 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 10 7.1 ANTENNA REQUIREMENT ................................................................................................................... 10 7.2 CONDUCTED EMISSIONS ................................................................................................................... 11 7.3 CONDUCTED OUTPUT POWER ........................................................................................................... 14 7.4 CHANNEL BANDWIDTH ...................................................................................................................... 15 7.5 POWER SPECTRAL DENSITY ............................................................................................................. 16 7.6 SPURIOUS EMISSION IN NON-RESTRICTED & RESTRICTED BANDS ....................................................... 17 7.6.1 Conducted Emission Method ..................................................................................................... 17 7.6.2 Radiated Emission Method ........................................................................................................ 18 8 TEST SETUP PHOTO ............................................................................................................................ 27 9 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 27 Report No.: GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan…

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Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 8 AppendixA: DTS Bandwidth Test Result Test Mode Antenna Frequency[MHz] DTS BW [MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.6488 0.5 PASS BLE_1M Ant1 2440 0.6510 0.5 PASS BLE_1M Ant1 2480 0.6633 0.5 PASS Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 BLE_1M-Ant1-2480 Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 8 AppendixB: Occupied Channel Bandwidth Test Result TestMode Antenna Frequency[MHz] OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0146 2401.5126 2402.5272 --- --- BLE_1M Ant1 2440 1.0116 2439.5163 2440.5279 --- --- BLE_1M Ant1 2480 1.0109 2479.5153 2480.5262 --- --- Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 BLE_1M-Ant1-2480 Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 8 AppendixC: Maximum conducted output power Test Result Peak TestMode Antenna Frequency[MHz] Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict BLE_1M Ant1 2402 5.57 ≤30 PASS BLE_1M Ant1 2440 6.06 ≤30 PASS BLE_1M Ant1 2480 6.05 ≤30 PASS Test Graphs Peak BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 BLE_1M-Ant1-2480 Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 8 AppendixD: Maximum power spectral density Test Result TestMode Antenna Frequency[MHz] Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -5.04 ≤8.00 PASS BLE_1M Ant1 2440 -4.48 ≤8.00 PASS BLE_1M Ant1 2480 -4.59 ≤8.00 PASS Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 BLE_1M-Ant1-2480 Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 5 of 8 AppendixE:Band edge measurements Test Result TestMode Antenna ChName Frequency[MHz] RefLevel[dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 Low 2402 4.10 -34.78 ≤-15.9 PASS BLE_1M Ant1 High 2480 5.17 -39.41 ≤-14.83 PASS Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2480 Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 6 of 8 AppendixF:Conducted Spurious Emission Test Result TestMode Antenna Frequency[MHz] FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 0~Reference 4.52 4.52 --- PASS BLE_1M Ant1 2402 30~1000 4.52 -62.13 ≤-15.48 PASS BLE_1M Ant1 2402 1000~26500 4.52 -36.53 ≤-15.48 PASS BLE_1M Ant1 2440 0~Reference 4.18 4.18 --- PASS BLE_1M Ant1 2440 30~1000 4.18 -49.78 ≤-15.82 PASS BLE_1M Ant1 2440 1000~26500 4.18 -38.41 ≤-15.82 PASS BLE_1M Ant1 2480 0~Reference 4.24 4.24 --- PASS BLE_1M Ant1 2480 30~1000 4.24 -62.17 ≤-15.76 PASS BLE_1M Ant1 2480 1000~26500 4.24 -39.53 ≤-15.76 PASS Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 7 of 8 Test Graphs BLE_1M-Ant1-2402-0~Reference BLE_1M-Ant1-2402-30~1000 BLE_1M-Ant1-2402-1000~26500 BLE_1M-Ant1-2440-0~Reference BLE_1M-Ant1-2440-30~1000 BLE_1M-Ant1-2440-1000~26500 Report No.:GTSL2023060017F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 8 of 8 BLE_1M-Ant1-2480-0~Reference BLE_1M-Ant1-2480-30~1000 BLE_1M-Ant1-2480-1000~26500 ------End------

Product specification Quick Reference Date Antenna module on the system board Frequency 2.45GHz* Ant.Port Input Pwr.(dBm) 0(Typ.BT class 2 output power) Tot.Rad.Pwr.(dBm) -2.3(Input pwr-loss pwr) Peak EIRP(dBm) 1.3 Directivity(dBi) 1 (all direction antenna) Efficiency(dB) -2.3(58.5%) Gain(dBi) 1.3(Peak Gain XY-plane) Maximum Power(dBm) 1.3(XY-plane) Maximum Power(dBm) -4(XY-plane) Avg.Power(dBm) -0.5(XY-plane) Max/Min Ratio(dB) 5.3(XY-plane) Max/Avg Ratio(dB) 1.8(XY-plane) Min/Avg Ratio(dB) -3.5(XY-plane) Average Gain(dB) -0.5(Avg Gain XY-plane) All the technical data and information contained herein are subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Gain Table Unit in dBi @ 2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg Peak Avg Module Board 1.3 -0.5 1.7 -3.8 1.1 -3.0 58.5%

Test Model No.: VSA‐52 Radiated Emission Conducted Emission