2BGR4-KM-RWS-XP1roof speaker system

Guangzhou JiuSheng Information Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 9/5/2024 the FCC wit U.S. Agent Designation [Guangzhou JiuSheng Information Technology Co., Ltd.] acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: [2BGR4-KM-RWS-XP1]): Name and company of U.S. agent: Bouge Tech Inc Physical U.S. address of agent: 457 E MCGLINCY LN, CAMPBELL, CA 95008 FRN of U.S. agent: 0033768409 Email address of U.S. agent: [email protected] [Bouge Tech Inc] acknowledges their obligation to accept service of process on behalf of [Guangzhou JiuSheng Information Technology Co., Ltd.]. [Guangzhou JiuSheng Information Technology Co., Ltd.] with the FRN [0035508290] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify hin 30 days via the granting TCB. Sincerely, Signature [Name] Clarice Xie [Title] Manager [Company] Guangzhou JiuSheng Information Technology Co., Ltd. Signature [Name of U.S. agent] Jason Zheng [Title of U.S. agent] GM [Company of U.S. agent] Bouge Tech Inc 48_[mo del] US_Agent_2.911(d)(7) - U, V04

Covered Equipment Identification Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows: We, applicant Company Name: Guangzhou JiuSheng Information Technology Co., Ltd. Address: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Phone: +86-13423772540 certify 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. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-09-05 Signature Date Printed Name of Signee / Title: Clarice Xie / Manager Company: Guangzhou JiuSheng Information Technology Co., Ltd. Address: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Phone: +86-13423772540 Fax: N/A Email: [email protected]

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BGR4-KM-RWS-XP1 KM-RWS-XP1 We, applicant Company Name: Guangzhou JiuSheng Information Technology Co., Ltd. Address: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Phone: +86-13423772540 certify 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. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-09-05 Signature Date Printed Name of Signee / Title: Clarice Xie / Manager Company: Guangzhou JiuSheng Information Technology Co., Ltd. Address: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Phone: +86-13423772540 Fax: N/A Email: [email protected]

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BGR4-KM-RWS-XP1 KM-RWS-XP1 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-09-05 Signature Date Printed Name of Signee / Title: Clarice Xie / Manager Company: Guangzhou JiuSheng Information Technology Co., Ltd. Address: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Phone: 13423772540 Fax: N/A Email: [email protected]

Short Term Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and in accordance with the FCC Public notice dated June 15, 2004 (DA 04-1705), we request short term confidentiality prior to marketing the device for the documentation of the following products: FCC ID Model name 2BGR4-KM-RWS-XP1 KM-RWS-XP1 For the products listed above, we request short term confidentiality for all applicable exhibits as there are: • External photos • Internal photos • Test setup photos • User manual The above listed exhibits contain business sensitive information which we wish to keep confidential until the actual marketing of our device, that is planned for: Short term confidentiality release date: < 180 days after issue of grant > If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-09-05 Signature Date Printed Name of Signee / Title: Clarice Xie / Manager Company: Guangzhou JiuSheng Information Technology Co., Ltd. Address: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Phone: +86-13423772540 Fax: N/A Email: [email protected]

Back of EUT Label Product Name: roof speaker system Model No.: KM-RWS-XP1 FCC ID: 2BGR4-KM-RWS-XP1 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. Label Location

RF EXPOSURE EVALUATION 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) FCC ID: 2BGR4-KM-RWS-XP1 EUT Specification EUT roof speaker system Frequency band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.24GHz WLAN: 5.745GHz ~ 5.825GHz Others: 2.402GHz~2.480GHz Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Exposure classification Occupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Max. output power BT: 0.80 dBm (0.0012W) BLE: 0.63 dBm (0.0006W) Antenna gain (Max) BT: 2.76 dBi BLE: 3.38 dBi Evaluation applied MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30 Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) 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 the limit of MPE, 1mW/cm2. 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 Test Mode Frequency (MHz) Measured Power (dBm) Target Power (dBm) Tune up tolerance (dBm) Max. Tune up Power (dBm) Antenna Gain (dBi) Power density at 20cm (mW/ cm 2 ) Power density Limits (mW/cm 2 ) BLE 2402 0.63 1 ±1 2 3.38 0.0007 1 2440 -1.39 -1 ±1 0 3.38 0.0004 1 2480 -2.64 -2 ±1 -1 3.38 0.0003 1 BDR&E DR 2402 0.65 1 ±1 2 2.76 0.0006 1 2441 -1.32 -1 ±1 0 2.76 0.0004 1 2480 -2.54 -2 ±1 -1 2.76 0.0003 1 2402 0.80 1 ±1 2 2.76 0.0006 1 2441 -1.21 -1 ±1 0 2.76 0.0004 1 2480 -2.43 -2 ±1 -1 2.76 0.0003 1 2402 0.72 1 ±1 2 2.76 0.0006 1 2441 -1.30 -1 ±1 0 2.76 0.0004 1 2480 -2.52 -2 ±1 -1 2.76 0.0003 1 Simultaneously Transmission MPE The BT and BT LE share difference modular and antenna, BT and BT LE can support simultaneously transmission. BT Maximum MPE Ratio BT LE Maximum MPE Ratio ΣBT and BT LE Maximum MPE Ratio Maximum MPE Ratio Limit Results 0.0006 0.0007 0.0013 1.0 PASS Test Verdict: Pass.

ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 1 ShenZhen City FeiMin Technology CO.,LTD. SPECIFICATION FOR APPROVED CUSTOMER: Dongguan baiyun electronic technology co., ltd. PRODUCTS: 2.4G antenna PART NO: Spec.: FM-S1562-MN-40 Data: 2023.12.22 REMARK:Please send us one(or copy)of this approval with stamp after accepting,other copies filed by the customer. Manufacturer: ShenZhen City FeiMin Technology CO.,LTD. ADD:Room 303,Building C,Hengnan one Road,Gushu community,Xixiang Street,Bao’an District,Shenzhen Ci ty Tel: 0755-23035723 Fax: 0755-23036702 E-mail: [email protected] HTTP:www.fmant.cn CUSTOMER ACCEPTED BY CHECKED BY APPROVED BY SUPPLIER PREPARED BY CHECKED BY APPROVED BY FanMa XingxiXia DongdongMa ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 2 目录 1.项目信息Project Information .................................................................................. 2 1.1. 外观尺寸Appearance and Dimensions .......................................................... 2 2.电气性能 Electrical Characteristics ......................................................................... 4 2.1. 测试环境条件Test Environment Conditions ................................................. 4 2.2. 测示方法Measurement method ..................................................................... 4 2.2.1. 天线电压驻波比Antenna VSWR ............................................................... 4 2.2.2. 天线回波损耗Antenna Return loss ................................................... 5 2.3. 天线无源测试数据 Antenna passive test data ................................. 5 2.3.1. 测试系统Test system ............................................................................... 5 2.3.2.天线效率及增益Antenna efficiency and gain ............................. 5 2.3.3.天线辐射方向图Antenna Radiation Pattern ....................................... 6 3.Notes ............................................................................................. 4.产品包装规范Product packaging specification ......................... ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 3 Revision history version date condition A1 2023-12-22 First edition Changes: First change: Before the change: (If necessary, please add corresponding pictures, and the details of the change should be clearly described here) After the change: (If necessary, please add corresponding pictures, and the details of the change should be clearly described here) ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 2 1. Project Information 1.1. Appearance and Dimensions ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 3 1.2. A physical diagram of the antenna ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 4 2. Electrical Characteristics 2.1. Test Environment Conditions Temperature Ordinary Temperature (5 to 35°C) Humidity Ordinary Humidity (25 to 85% RH) 2.2. Measurement method 2.2.1. Antenna VSWR ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 5 2.2.2. Antenna Return loss 2.3. Antenna passive test data 2.3.1. Test system Shenzhen Feimin Technology Co., Ltd. (24-probe OTA microwave darkroom) ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 6 2.3.2.Antenna efficiency and gain 2.3.3. Antenna Radiation Pattern ANTENNA SPECIFICATION Shenzhen Feimin Technology Co.,Ltd 7 3.Notes 1. When installing, be careful not to be too close to the metal part to avoid affecting the antenna performance. 2. This antenna is only suitable for this model, and the position of the antenna cannot be changed at will. If it is used on other machines, the effect will become worse, which has nothing to do with our company. 3. The data (such as antenna efficiency, gain, etc.) used in this acknowledgement are all obtained from the laboratory test of this recognition project/antenna in Shenzhen Feimin Technology Co., Ltd. 4. Product packaging specification Product name: 2.4G antenna 1、Labeling requirements The inner label is 7CM long and 4CM wide The outer label is 7CM long, about 5CM 2、Packing process Job description： 1. The product __PCS is packed in PE open pockets, and the inner label is affixed to each pouch; Put the __ small bag into the big PE sealing tape bag, except the tail number and spare parts. 2. Each box contains __ large bags of products, and the boxes are sealed with adhesive tape in the shape of "I"。 3. Paste the outer label on the upper right corner of the box, and there must be no missing or wrong filling. 3、Precautions When packing the box, please pay attention to lay the antenna flat and avoid serious shaking after sealing. If the whole box is not filled, it needs to be filled with foam to avoid transportation Circumstances that caused product defects in the process。 client's name supplier Shenzhen Feimin Technology Co., Ltd. Order number ************* Material coding ************* Specification model ****** product name ******* quantity *****PCS QC: spare parts ***PCS Notes supplier Shenzhen Feimin Technology Co., Ltd. product name ************* Material coding ************* Specifications ********** quantity ***PCS product

Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 1 / 75 Appendix A RF Test Data for BR_EDR(Conducted Measurement) Product Name: roof speaker system Trade Mark: N/A Test Model: KM-RWS-XP1 Environmental Conditions Temperature: 24.6°C Relative Humidity: 51.4% ATM Pressure: 101Kpa Test Engineer: Simba Huang Supervised by: Seal Chen Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 2 / 75 Test Summary Item Result Duty Cycle Pass Bandwidth Pass Maximum Conducted Output Power Pass Carrier Frequency Separation Pass Number of Hopping Frequencies Pass Time of Occupancy (Dwell Time) Pass Unwanted Emissions In Non-restricted Frequency Bands Pass Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 3 / 75 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) GFSK SISO 2402 DH5 2.889 3.750 77.04 1.13 0.03 2441 DH5 2.892 3.749 77.14 1.13 0.03 2480 DH5 2.893 3.750 77.15 1.13 0.03 π/4-DQPSK SISO 2402 2DH5 2.888 3.750 77.01 1.13 0.03 2441 2DH5 2.889 3.751 77.02 1.13 0.03 2480 2DH5 2.888 3.750 77.01 1.13 0.01 8DPSK SISO 2402 3DH5 2.889 3.750 77.04 1.13 0.03 2441 3DH5 2.889 3.751 77.02 1.13 0.03 2480 3DH5 2.889 3.750 77.04 1.13 0.03 Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 4 / 75 1.2 Test Graph 1.2.1 Ant1 GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 5 / 75 GFSK_DH5_HCH_2480MHz_Ant1_NTNV π/4-DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 6 / 75 π/4-DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV π/4-DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 7 / 75 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 8 / 75 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 9 / 75 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.906 / Pass 2441 DH5 1 0.906 / Pass 2480 DH5 1 0.904 / Pass π/4-DQPSK SISO 2402 2DH5 1 1.188 / Pass 2441 2DH5 1 1.190 / Pass 2480 2DH5 1 1.189 / Pass 8DPSK SISO 2402 3DH5 1 1.179 / Pass 2441 3DH5 1 1.181 / Pass 2480 3DH5 1 1.182 / Pass 2.1.2 20dB BW Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.981 / Pass 2441 DH5 1 0.980 / Pass 2480 DH5 1 0.969 / Pass π/4-DQPSK SISO 2402 2DH5 1 1.317 / Pass 2441 2DH5 1 1.323 / Pass 2480 2DH5 1 1.322 / Pass 8DPSK SISO 2402 3DH5 1 1.311 / Pass 2441 3DH5 1 1.314 / Pass 2480 3DH5 1 1.313 / Pass Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 10 / 75 2.2 Test Graph 2.2.1 OBW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 11 / 75 GFSK_DH5_HCH_2480MHz_Ant1_NTNV π/4-DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 12 / 75 π/4-DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV π/4-DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 13 / 75 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 14 / 75 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 15 / 75 2.2.2 20dB BW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 16 / 75 GFSK_DH5_HCH_2480MHz_Ant1_NTNV π/4-DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 17 / 75 π/4-DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV π/4-DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 18 / 75 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 19 / 75 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 20 / 75 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 0.65 <=30 Pass 2441 DH5 -1.32 <=30 Pass 2480 DH5 -2.54 <=30 Pass π/4-DQPSK SISO 2402 2DH5 0.80 <=20.97 Pass 2441 2DH5 -1.21 <=20.97 Pass 2480 2DH5 -2.43 <=20.97 Pass 8DPSK SISO 2402 3DH5 0.72 <=20.97 Pass 2441 3DH5 -1.30 <=20.97 Pass 2480 3DH5 -2.52 <=20.97 Pass Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 21 / 75 3.2 Test Graph 3.2.1 Power GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 22 / 75 GFSK_DH5_HCH_2480MHz_Ant1_NTNV π/4-DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 23 / 75 π/4-DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV π/4-DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Report No.: AiTDG-240823004FW1 FCC ID: 2BGR4-KM-RWS-XP1 Dongguan Yaxu(AiT) Technology Limited 24 / 75 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Report No…

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Page 1 of 37 Report No.: AiTDG-240823004FW1 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. TEST REPORT Client Information: Applicant: Guangzhou JiuSheng Information Technology Co., Ltd. Applicant add.: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Manufacturer: Guangzhou JiuSheng Information Technology Co., Ltd. Manufacturer add.: Unit L3A02-8, No. 31-6 Xicha Road, Baiyun District, Guangzhou City, China Product Information: Product Name: roof speaker system Model No.: KM-RWS-XP1 Brand Name: N/A FCC ID: 2BGR4-KM-RWS-XP1 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Prepared By: Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang,Dongguan, Guangdong, China Tel.: +86-769-8202 0499 Fax.: +86-769-8202 0495 Date of Receipt: Aug. 19, 2024 Date of Test: Aug. 19, 2024 ~ Aug. 27, 2024 Date of Issue: Spe. 04, 2024 Test Result: Pass This device described above has been tested by Dongguan Yaxu (AiT) Technology Limited and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. Note: This report shall not be reproduced except in full, without the written approval of Dongguan Yaxu (AiT) Technology Limited, this document may be altered or revised by Dongguan Yaxu (AiT) Technology Limited, personal only, and shall be noted in the revision of the document. This test report must not be used by the client to claim product endorsement. Reviewed by: Approved by: Emiya Lin Simba Huang Page 2 of 37 Report No.: AiTDG-240823004FW1 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. 1 Contents Page COVER PAGE 1 CONTENTS .................................................................................................................................................................... 2 2 TEST SUMMARY .......................................................................................................................................................... 4 2.1 Statement of the Measurement Uncertainty ............................................................................... 4 2.2 Measurement Uncertainty ........................................................................................................... 4 3 TEST FACILITY ............................................................................................................................................................. 5 3.1 Deviation from standard .............................................................................................................. 5 3.2 Abnormalities from standard conditions ...................................................................................... 5 3.3 Test Location ............................................................................................................................... 5 4 GENERAL INFORMATION ......................................................................................................................................... 6 4.1 Test frequencies .......................................................................................................................... 7 4.2 EUT Peripheral List ..................................................................................................................... 8 4.3 Test Peripheral List ...................................................................................................................... 8 4.4 TEST METHODOLOGY .............................................................................................................. 9 4.5 Description of Test Modes ......................................................................................................... 10 5 EQUIPMENT USED DURING TEST ........................................................................................................................ 11 6 TEST RESULTS AND MEASUREMENT DATA .................................................................................................... 12 6.1 Antenna requirement ................................................................................................................. 12 6.2 Peak Power Measurement ........................................................................................................ 13 6.3 Frequency Separation and 20 dB Bandwidth ........................................................................... 15 6.4 Number of Hopping Frequency ................................................................................................. 17 6.5 Time of Occupancy (Dwell Time) .............................................................................................. 18 6.6 Conducted Spurious Emissions and Band Edges Test ............................................................. 20 6.7 Restrict-band Band-edge Measurements ................................................................................. 22 6.8 Radiated Emissions Measurement ........................................................................................... 24 6.9 Conducted Emissions ................................................................................................................ 35 6.10 Pseudorandom frequency hopping sequence .......................................................................... 36 7 TEST SETUP PHOTOGRAPHS OF EUT ................................................................................................................ 37 8 EXTERNAL PHOTOGRAPHS OF EUT ................................................................................................................... 37 9 INTERNAL PHOTOGRAPHS OF EUT .................................................................................................................... 37 Page 3 of 37 …

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