2BKR2-BOXIntelligent music boxing machine

Shenzhen Maitu Technology Co., Ltd. U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: AOCE Corporation Inc. FRN: 0033401381 Contact Name: Johnson.wang Address: 6547 N Academy Bivd #2266, Colorado Springs, CO,80918 United States Telephone No: +1-346-582-5234 Email: [email protected] This letter is to confirm that we (“the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature: Date: 2024/9/9 Signed by (Printed Name/Title): The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Shenzhen Maitu Technology Co., Ltd. Grantee Code: 2BKR2 FCC ID: 2BKR2-BOX FRN: 0035900604 Contact Name: FANG WEI CHUN Address: D1602, Building 3, Phase I of Tian'an Yungu Industrial Park, Longgang District Shenzhen China Telephone No: 13713772444 Email: [email protected] Applicant Signature: Date: 2024/9/9 Signed by (Printed Name/Title): FANG WEI CHUN / manager

Shenzhen Maitu Technology Co., Ltd. 2024/9/9 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BKR2-BOX) [Shenzhen Maitu 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. Sincerely, (Applicant signature) (Applicant printed name) FANG WEI CHUN Shenzhen Maitu Technology Co., Ltd. 2024/9/9 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BKR2-BOX) [Shenzhen Maitu 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. Sincerely, (Applicant signature) (Applicant printed name) FANG WEI CHUN

Shenzhen Maitu Technology Co., Ltd. 2024/9/9 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Intelligent music boxing machine Trademark: MAITUFIT MODEL: MaituFit box, MaituFit M4, MaituFit M5, MaituFit M6, MaituFit M7, MaituBox M4, MaituBox M5, MaituBox M6, MAITU BOX 4th generation, BOX 5th generation, MAITU BOX1.0Pro, MAITU BOX2.0Pro, MAITU BOX3.0Pro, Smart Box, MAILONG BOX1.0Pro, MAILONG, BOX2.0Pro, MaituBox M7, MaituBox M8, MaituBox M9, MaituFit M8, MaituFit M9 FCC ID: 2BKR2-BOX To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title: FANG WEI CHUN / manager Contact information / address: D1602, Building 3, Phase I of Tian'an Yungu Industrial Park, Longgang District Shenzhen China

Shenzhen Maitu Technology Co., Ltd. 2024/9/9 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION EUT NAME: Intelligent music boxing machine Trademark: MAITUFIT MODEL: MaituFit box, MaituFit M4, MaituFit M5, MaituFit M6, MaituFit M7, MaituBox M4, MaituBox M5, MaituBox M6, MAITU BOX 4th generation, BOX 5th generation, MAITU BOX1.0Pro, MAITU BOX2.0Pro, MAITU BOX3.0Pro, Smart Box, MAILONG BOX1.0Pro, MAILONG, BOX2.0Pro, MaituBox M7, MaituBox M8, MaituBox M9, MaituFit M8, MaituFit M9 FCC ID: 2BKR2-BOX To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title: FANG WEI CHUN / manager Contact information / address: D1602, Building 3, Phase I of Tian'an Yungu Industrial Park, Longgang District Shenzhen China

Shenzhen Maitu Technology Co., Ltd. 2024/9/9 EUT NAME: Intelligent music boxing machine Trademark: MAITUFIT MODEL: MaituFit box, MaituFit M4, MaituFit M5, MaituFit M6, MaituFit M7, MaituBox M4, MaituBox M5, MaituBox M6, MAITU BOX 4th generation, BOX 5th generation, MAITU BOX1.0Pro, MAITU BOX2.0Pro, MAITU BOX3.0Pro, Smart Box, MAILONG BOX1.0Pro, MAILONG, BOX2.0Pro, MaituBox M7, MaituBox M8, MaituBox M9, MaituFit M8, MaituFit M9 FCC ID: 2BKR2-BOX All the model are the same circuit and RF module, except model names. Sincerely Client’s signature: Client’s name / title: FANG WEI CHUN / manager Contact information / address: D1602, Building 3, Phase I of Tian'an Yungu Industrial Park, Longgang District Shenzhen China

External Photos

Size:50*20mm FCC ID: 2BKR2-BOX 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. (2) This device must accept any interference received, including interference that may cause undesired operation. Label location

Internal Photos Antenna

FCC ID: 2BKR2-BOX RF exposure evaluation §2.1093 Radiofrequency radiation exposure evaluation: Portable Devices. According to§15.247(i) and§1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The 1-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  When the minimum test separation distance is < 5 mm, a distance of 5 mm according is applied to determine SAR test exclusion.  The result is rounded to one decimal place for comparison  GFSK Modulation Frequency (MHz) Max. Power (dBm) Max. Tune up Power (dBm) Max. Tune up Power (mW) Test distance (mm) Result exclusion thresholds for 1-g SAR π/ 4 DQPSK 2402 -8.15 -8.0 0.16 5 0.05 3.0 GFSK(1Mbps) 2402 -8.47 -8.0 0.16 5 0.05 3.0 Conclusion: For the max result: 0.05W/Kg ≤ FCC Limit 3.0 for 1g SAR. The Product unsupported at the same time to Transmitting.

Dongguan Hengxin Electronic Technology Co., Ltd. Specification For Approval Customer DescriptionBT Antenna ChaoWei P/NHX -P510-UFL200B Customer P/N Date2015.06.06 Customers ConfirmationSupplier EngineerQCPurchasingApprovalCheck Shamoer TEL ：0769-81663533 FAX ：0769-89361945 Index: 1.Reliability Testing 2. Specification 3. S Parameter Test Data 4. Antenna Radiation Pattern ================================================== 1.Reliability Testing Test Item Procedure Requirement 1. Visual inspection and Dimension Check Applicable methods using x5 magnification follow specification 2. Rapid Changing of Temperature -40 ̊C (30minutes) to 80 ̊C (30minutes); 24 cycles After 2 hours recovery: 1. no visible damage 2. bandwidth tolerance < ±5% 3. Damp Heat24 hours at 60 ̊C; 90 ~ 95% RH After 2 hours recovery: 1. no visible damage 2. bandwidth tolerance < ±5% 4. Endurance24 hours at 80 ̊C After 2 hours recovery: 1. no visible damage 2. bandwidth tolerance < ±5% 5. Connector Pull Strength Test >= 1.0 Kg Hold 2~3S: 1. no visible damage 2. bandwidth tolerance < ±5% 2.Specification A. Electrical Characteristics S.W.R.( Tested in PC ) <= 2.0 @ 2400~2500 MHz Typical Antenna Gain 2.74dBi @ 2450 MHz Impedance 50 Ohm B. Material Material of Radiator FPC Cable Length 200mm Connector Type Mini C. Environmental Operation Temperature -40 ̊C ~ + 85 ̊C Storage Temperature -40 ̊C ~ + 85 ̊C 3.S.W.R. Testing Result 东莞市亨杺电子科技有限公司 Frequency ID1234567891011121314151617181920212223242526 Frequency (MHz)24002410242024302440245024602470248024902500515052005250530053505400545055005550560056505700575058005850 Efficiency (dBi)-2.70-2.61-2.77-2.35-2.72-2.53-2.74-2.36-3.07-2.65-3.13-3.28-3.20-3.07-3.50-3.53-3.08-3.04-2.89-2.79-3.13-3.12-3.18-3.58-3.53-3.23 Gain (dBi)2.112.161.902.382.172.532.392.741.902.281.891.821.621.701.581.712.202.442.642.622.131.901.541.061.001.35 Efficiency (%)53.6554.8752.8958.2053.5155.8153.2158.0449.3154.3648.6246.9547.9049.3244.6444.3849.1749.6851.3852.6248.6248.7148.1343.8844.3747.54 Directivity (dB)4.824.774.674.734.885.075.135.104.974.935.025.104.824.775.085.245.285.475.545.415.275.024.724.634.534.58 Peak Gain Position (Theta)87.0087.0088.0088.0089.0089.0089.0090.0090.0091.0092.0091.0093.0013.0093.0095.0095.0068.0070.0097.0098.0073.0073.0074.0075.0083.00 Peak Gain Position (Phi)30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.000.000.00240.000.000.000.00330.00330.000.000.00330.00330.00330.00330.00330.00 Efficiency ThetaPol (%)24.4224.6924.9027.0125.5426.4126.0028.4624.4927.3424.2620.4821.8522.8620.9120.7023.2123.4723.9324.8323.0023.2422.5920.1520.7820.83 Efficiency PhiPol (%)29.2230.1727.9931.1927.9729.4027.2129.5924.8227.0224.3626.4726.0526.4623.7323.6825.9626.2127.4527.7925.6225.4725.5423.7323.5926.71 Upper Hem. Efficiency (%)33.0633.8932.7635.7332.9834.5533.2736.3830.9334.0030.3027.8629.0830.0726.8626.5829.2129.3330.2630.9628.7929.0729.0526.5726.8228.36 Lower Hem. Efficiency (%)20.5920.9820.1322.4720.5321.2619.9421.6618.3820.3618.3119.0918.8219.2517.7817.8019.9620.3421.1221.6619.8319.6419.0817.3117.5519.18 VER7 T90(H)圆度8.848.818.678.418.588.829.018.948.959.029.0815.8614.0712.2413.8112.2511.5411.9010.469.119.338.818.859.459.168.44 Gain 15deg (dBi) E1(XZ)波瓣宽度21.0021.0051.0053.0025.0032.0048.0047.0048.0048.0047.0026.0029.0030.0027.0025.0023.0022.0021.0020.0020.0022.0025.0058.0059.0060.00 E1(XZ)前后比2.512.502.492.262.292.082.212.282.402.542.602.392.332.242.482.522.762.892.933.403.473.533.903.593.694.03 E2(YZ)波瓣宽度58.0058.0060.0061.0061.0064.0070.0082.0095.0094.0086.0014.0014.0054.0056.0055.0062.0064.0020.0020.0020.0022.0023.0095.0096.0098.00 E2(YZ)前后比1.731.361.020.730.981.331.621.411.030.700.601.671.651.331.771.431.111.070.950.770.650.630.600.931.742.12 最大增益处轴比(P)6.296.645.886.956.757.738.287.389.218.658.3016.3216.785.9920.8117.6522.734.915.5617.4319.745.385.086.936.326.07 顶点(Theta=0)处轴比(P)9.729.9610.0010.8210.659.948.728.288.8311.2815.057.067.176.528.198.006.576.176.006.405.886.868.8310.4812.1512.75 仰角10度最差(大)轴比(P)78.8756.5868.0355.1673.5567.3456.8366.3362.5146.5746.5656.9057.1061.9946.7457.5650.0556.9869.7855.0263.2860.8947.2850.0751.1857.14 Hc(XY)波瓣宽度31.0033.0033.0032.0031.0030.0029.0029.0029.0028.0028.0098.00101.00108.00102.00106.00109.00113.00121.00128.00128.00124.00118.00109.00109.00107.00 Hc(XY)前后比5.035.175.355.816.016.055.835.675.585.665.783.633.563.303.393.082.802.311.861.461.812.002.483.253.333.57 左旋圆极化效率(%)23.4124.1223.0125.4723.3224.8323.8526.3722.1124.5521.7219.9619.0118.5418.9719.6121.5622.1122.5523.9321.8822.0022.1520.1020.9422.38 右旋圆极化效率(%)30.2430.7529.8832.7330.1930.9829.3631.6727.2129.8126.9026.9928.8830.7825.6724.7727.6027.5728.8328.6926.7426.7125.9823.7823.4325.16 最大增益处交极比(+/-45极化)2.872.693.063.074.034.534.895.255.275.937.162.763.175.366.116.107.114.194.647.667.845.205.046.885.924.67 最大增益处交极比(水平垂直极化)5.145.624.575.644.615.085.224.005.624.492.7212.9412.472.098.958.517.962.202.536.826.981.120.500.611.643.19 T60度Phi一圈最差交极比(+/-45极化)0.030.050.070.000.000.010.000.010.000.040.060.000.000.040.010.000.000.040.030.090.020.020.020.010.020.16 T60度Phi一圈最差交极比(水平垂直极化)0.020.010.010.010.080.000.060.080.010.040.000.050.010.020.050.010.000.040.020.010.030.000.030.010.050.03 T90度(H)Phi一圈最差交极比(+/-45极化)0.000.020.030.050.010.020.000.020.090.010.220.010.200.220.280.070.020.000.030.280.400.120.210.110.010.09 T90度(H)Phi一圈最差交极比(水平垂直极化)0.060.010.000.050.010.100.020.020.020.030.040.010.020.000.010.000.030.030.020.030.010.040.020.000.020.03 轴对称天线主瓣下倾角度(平均值)-0.091.894.135.727.909.7311.2311.6610.209.369.0325.3635.6953.5062.9566.6866.8967.6972.8572.6962.9556.2451.2546.8145.6930.37 轴向(Z+)水平垂直极化隔离度9.389.9410.0010.7710.649.888.547.306.435.896.366.796.916.237.837.596.425.675.544.914.404.044.415.566.297.36 Theta85.0一周最大增益2.112.161.902.382.172.532.392.741.902.281.891.821.621.561.581.712.202.382.522.622.131.781.500.990.781.28 Theta85.0一周圆度(为最大最小增益值的差，不是+/-的值)14.2413.8813.4313.9114.6214.7114.3013.7713.6513.9114.1917.1317.8517.6416.8319.2218.9021.6623.6121.0515.1611.6012.1212.3011.7411.87 Empty max58.20 min43.88 58.20 43.8…

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No.：BCTC/RF-EMC-005 Page: 1 of 53 Edition：B.2 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2408170561-2E Applicant: Shenzhen Maitu Technology Co., Ltd. Product Name: Intelligent music boxing machine Test Model: MaituFit box Tested Date: 2024-08-22 to 2024-09-05 Issued Date: 2024-09-06 Report No.: BCTC2408170561-2E No.：BCTC/RF-EMC-005 Page: 2 of 53 Edition：B.2 FCC ID: 2BKR2-BOX The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Intelligent music boxing machine Trademark: MAITUFIT Model/Type Reference: MaituFit box MaituFit M4, MaituFit M5, MaituFit M6, MaituFit M7, MaituBox M4, MaituBox M5, MaituBox M6, MAITU BOX 4th generation, MAITU BOX 5th generation, MAITU BOX1.0Pro, MAITU BOX2.0Pro, MAITU BOX3.0Pro, Smart Box, MAILONG BOX1.0Pro, MAILONG, BOX2.0Pro, MaituBox M7, MaituBox M8, MaituBox M9, MaituFit M8, MaituFit M9 Prepared For: Shenzhen Maitu Technology Co., Ltd. Address: D1602, Building 3, Phase I of Tian'an Yungu Industrial Park, Longgang District Shenzhen China Manufacturer: Shenzhen Maitu Technology Co., Ltd. Address: D1602, Building 3, Phase I of Tian'an Yungu Industrial Park, Longgang District Shenzhen China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2024-08-22 Sample Tested Date: 2024-08-22 to 2024-09-05 Issue Date: 2024-09-06 Report No.: BCTC2408170561-2E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth BLE radio test report. Tested by: Approved by: Min Zhi Cheng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2408170561-2E No.：BCTC/RF-EMC-005 Page: 3 of 53 Edition：B.2 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table of parameters of text software setting ....................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT Operating Conditions .................................................................................. 13 6.5 Test Result .......................................................................................................... 14 7. Radiated Emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 24 8.1 Block Diagram Of Test Setup .............................................................................. 24 8.2 Limit .................................................................................................................... 24 8.3 Test Procedure ................................................................................................... 25 8.4 EUT Operating Conditions .................................................................................. 26 8.5 Test Result .......................................................................................................... 26 9. Power Spectral Density Test ............................................................................... 27 9.1 Block Diagram Of Test Setup .............................................................................. 27…

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Report No.: BCTC2408170561-1E No.：BCTC/RF-EMC-005 Page: 65 of 67 Edition：B.2 17. EUT Test Setup Photographs Conducted emissions Report No.: BCTC2408170561-1E No.：BCTC/RF-EMC-005 Page: 66 of 67 Edition：B.2 Radiated Measurement Photos