2AAUI-GDIEXBMP510Boulder Max Pro Ultra

Grace Digital Inc. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: Grace Digital Inc. Address: 10531 4S Commons Drive#166 Suite#430, San Diego, CA 92127, USA Product Name: Boulder Max Pro Ultra FCC ID: 2AAUI-GDIEXBMP510 Model(s): GDI-EXBMP510, GDI-EXBULT510 2.911(d)(5)(i) EquipmentType We, [Grace Digital Inc.] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: James Florczak Date: 3/14/2024 Title and Company name: EVP / Grace Digital Inc. NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Grace Digital Inc. 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Grace Digital Inc. Address: 10531 4S Commons Drive#166 Suite#430, San Diego, CA 92127, USA Product Name: Boulder Max Pro Ultra FCC ID: 2AAUI-GDIEXBMP510 Model(s): GDI-EXBMP510, GDI-EXBULT510 2.911(d)(5)(ii) Applicant filing We, [Grace Digital Inc.] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter,as an entity producing coveredcommunications equipment. Yours sincerely, Name: James Florczak Date: 3/14/2024 Title and Company name: EVP / Grace Digital Inc. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Grace Digital Inc. U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: 3/14/2024 Ref: Attestation Statement – Part2.911(d)(7) filing FCC ID: 2AAUI-GDIEXBMP510 Grace Digital Inc. (“the applicant”) certifies that, as of the date of the filing of the application, Grace Digital Inc. (“the agent”) is our designated U.S. agent for service of process for the abovereference FCC ID. The applicant accepts to maintain an agent for service of process in the United States forno less than one year after either the grantee has permanently terminated all marketing and importation of theapplicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicialproceeding involving the equipment, whichever is later. The applicant further acknowledges it is ourresponsibility to inform the FCC whenever the agent information changes. Grace Digital Inc. ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: Grace Digital Inc. FRN: 0022769137 GC: 2AAUI Address: Grace Digital Inc. 10531 4S Commons Drive #166 Suite #430,San Diego, CA 92127 Signature: Contact Person: James Florczak Tel: 858 748 6343 Email: [email protected] Applicant Company Name: Grace Digital Inc. Address: Grace Digital Inc. 10531 4S Commons Drive #166 Suite #430,San Diego, CA 92127 Signature: Contact Person: James Florczak FRN: 0022769137 GC: 2AAUI Tel: 858 748 6343 Email: [email protected]

Grace Digital Inc. Agent Authorization Company: Grace Digital Inc. Address: 10531 4S Commons Drive#166 Suite#430, San Diego, CA 92127, USA Product Name: Boulder Max Pro Ultra Model Number(s): GDI-EXBMP510, GDI-EXBULT510 Product Description: Boulder Max Pro Ultra We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 3/14/2024 Name: James Florczak Title: EVP, Operations Company: Grace Digital Inc.

Grace Digital Inc. Family models difference declaration Product Name: Boulder Max Pro Ultra Trade Name: ECOXGEAR Model Name: GDI-EXBMP510 Family Model: GDI-EXBULT510 FCC ID: 2AAUI-GDIEXBMP510 Difference declaration: All models are the same circuit and RF module, except the lid. We (Grace Digital Inc.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.), same mechanical structure and design (including product enclosure, materials, etc.), the only difference is theAll the model are the same circuit and RF module, except the lid. The difference in lids is shown in the picture below: Regards, Signature Name: James Florczak Date: 3/15/2024

FCC ID:2AAUI-GDIEXBMP510 Maximum Permissible Exposure (MPE) 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) Limits for Maximum Permissible Exposure (MPE) MPE Calculation Method E (V/m) ＝ d GP**30 Power Density: Pd (W/m²) ＝ 377 2 E E ＝ Electric field (V/m) P ＝ Average RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 2 *377 **30 D GP From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. BT: Measurement Result Operation Frequency: 2402MHz~2480MHz Power density limited: 1mW/ cm 2 Antenna Type:PCB antenna Antenna gain:0dBi; R=20cm mW=10^(dBm/10) antenna gain Numeric=10^(dBi/10)= 10^(0/10)=1 Module 2 conducted power Evaluation result Power density Limits (dBm)(mW)(dBi)Numeric 2402 -0.45 0.5±10.5 1.1220.001.000.00021 2441 -0.55 0.5±10.5 1.1220.001.000.00021 2480 0.37 0.5±10.5 1.1220.001.000.00021 2402 1.83 2±13 1.9950.001.000.00041 2441 1.81 2±13 1.9950.001.000.00041 2480 2.6 2±13 1.9950.001.000.00041 2402 2.54 3±14 2.5120.001.000.00051 2441 2.52 3±14 2.5120.001.000.00051 2480 3.13 3±14 2.5120.001.000.00051 Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) 2DH5 3DH5 (mW/cm2 )(mW/cm2) Antenna Gain DH5 Max tune-up power conducted power Evaluation result Power density Limits (dBm)(mW)(dBi)Numeric 2402 -0.7 0±11 1.2590.001.000.00031 2440 -0.91 0±11 1.2590.001.000.00031 2480 0.13 0±11 1.2590.001.000.00031 2402 -0.67 0±11 1.2590.001.000.00031 2440 -0.43 0±11 1.2590.001.000.00031 2480 0.25 0±11 1.2590.001.000.00031 Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) GFSK(2M) (mW/cm2 )(mW/cm2) Antenna Gain GFSK(1M） Max tune-up power Module 1 conducted power Evaluation result Power density Limits (dBm)(mW)(dBi)Numeric 2402 2.13 2±13 1.9950.001.000.00041 2440 1.87 2±13 1.9950.001.000.00041 2480 1 2±13 1.9950.001.000.00041 (mW/cm2 )(mW/cm2) Antenna Gain GFSK(1M） Max tune-up power Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) Note:Module 1 and module 2 cannot transmit at the same time. Conclusion: For the max result : 0.0004≤ 1.0 for Max Power Density, compliance RF exposure.. Signature: Date: 2024-03-01 NAME AND TITLE (Please print or type): alex li/Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen P.R. China.

Report No.: S24010803102002 Version.1.3 Page 1 of 108 RADIO TEST REPORT FCC ID: 2AAUI-GDIEXBMP510 Product: Boulder Max Pro Ultra Trade Mark: ECOXGEAR Model No.: GDI-EXBMP510 Family Model: GDI-EXBULT510 Report No.: S24010803102002 Issue Date: 28 Feb, 2024 Prepared for Grace Digital Inc. 10531 4S Commons Drive#166 Suite#430, San Diego, CA 92127, USA Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1&5/F, Building C, 1&2/F, Building E, Fenda Science Park, Sanwei Community, Hangcheng Street, Baoan District, Shenzhen ,Guangdong, China Tel. 400-800-6106, 0755-2320 0050, 0755-2320 0090 Website: http://www.ntek.org.cn Report No.: S24010803102002 Version.1.3 Page 2 of 108 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 4 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 5 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 6 3.1 FACILITIES..................................................................................................................................................... 6 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 6 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 6 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 7 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 9 6 SETUP OF EQUIPMENT UNDER TEST ......................................................................................................... 11 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ..................................................................... 11 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 12 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 13 7 TEST REQUIREMENTS .................................................................................................................................... 15 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 15 7.1.1 Applicable Standard .................................................................................................................................. 15 7.1.2 Conformance Limit ................................................................................................................................... 15 7.1.3 Measuring Instruments ............................................................................................................................. 15 7.1.4 Test Configuration .................................................................................................................................... 15 7.1.5 Test Procedure ........................................................................................................................................... 15 7.1.6 Test Results ................................................................................................................................................ 16 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 20 7.2.1 Applicable Standard .................................................................................................................................. 20 7.2.2 Conformance Limit ................................................................................................................................... 20 7.2.3 Measuring Instruments ............................................................................................................................. 21 7.2.4 Test Configuration .................................................................................................................................... 21 7.2.5 Test Procedure ........................................................................................................................................... 22 7.2.6 Test Results ................................................................................................................................................ 23 7.3 6DB BANDWIDTH ....................................................................................................................................... 34 7.3.1 Applicable Standard .................................................................................................................................. 34 7.3.2 Conformance Limit ................................................................................................................................... 34 7.3.3 Measuring Instruments ............................................................................................................................. 34 7.3.4 Test Setup .................................................................................................................................................. 34 7.3.5 Test Procedure ........................................................................................................................................... 34 7.3.6 Test Results ................................................................................................................................................ 34 7.4 DUTY CYCLE ........................................................…

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Parameter Testing Report Project:WIFI Antenna Product Description 2400-2500MHz Report Date: 2022.02.24 Report Version: 1.0 Prepared by: Patrick Approved by: Jammy 2022.10.28 2 Contents: 1. Testing Item & Equipment 2. S-Parameters Test Results 3. GAIN & Efficiency TEST Antenna appearance figure 11mm 0.6mm 3 1. Testing Item & Equipment 4 2.VSWR TEST GAIN& Efficiency TEST 参数 \ 频率 (mhz) 2400 2450 2500 Peak Gain(dBi) -0.690.00-1.12 Efficiency(%) 54.5658.0960.77 Response (dB) -14 0 -12 -10 -8 -6 -4 -2

蓝牙音箱 Parameter Testing Report Project:WIFI Antenna Product Description 2400-2500MHz Report Date: 2022.02.24 Report Version: 1.0 Prepared by: Patrick Approved by: Jammy 2 Contents: 1. Testing Item & Equipment 2. S-Parameters Test Results 3. GAIN & Efficiency TEST 3 1. Testing Item & Equipment 4 2.VSWR TEST GAIN& Efficiency TEST 参数 \ 频率 (mhz) 2400 2450 2500 Peak Gain(dBi) -0.43-0.210 Efficiency(%) 52.1450.9853.78 Response (dB) -14 0 -12 -10 -8 -6 -4 -2