2AAIN-MNPAMB283MONSTER MB283

MNPA-MB FCCWarningStatement Changesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecould voidtheuser’sauthoritytooperatetheequipment.Thisequipmenthasbeentestedandfoundto complywiththelimitsforaClassBdigitaldevice,pursuanttoPart15oftheFCCRules.These  limitsar edesignedtoprovidereasonableprotectionagainstharmfulinterferenceinaresidential installation.Thisequipmentgeneratesusesandcanradiateradiofrequencyenergyand,ifnot installedandusedinaccordancewiththeinstructions,maycauseharmfulinterferencetoradio communications.However,thereisnoguaranteethatinterferencewill notoccurinapar t icular installation.Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception, whichcanbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotryto correcttheinterferencebyoneormoreofthefollowingmeasures: ϋϋReorient orrelocatether eceivingan tenna. ϋϋIncreasetheseparationbetweentheequipmentandreceiver. ϋϋConnecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiveris connected. ϋϋConsultthedealeroranexperiencedradio/TVtechnicianforhelp. Thisdevicecomplieswithpart15 oftheFCCRules.Opera tionissubjecttothefollowing twoconditions:(1)Thisdevicemaynotcauseharmfulinterference,and (2)thisdevicemustacceptanyinterferencereceived,includinginterferencethatmaycause undesiredoperation.

ACOUSTMAX INTERNATIONAL CO., LTD Agent Authorization Company: ACOUSTMAX INTERNATIONAL CO., LTD Address: Unit D16/F Cheuk Nang Plaza 250 Hennessy Road WanchaiHongKong. Hongkong, China Product Name: MONSTER MB283 Model Number(s): MNPA-MB283, MNPA-MB283-C, MNPA-MB283-2 Product Description: MONSTER MB283 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: Jan. 19, 2021 Name: Zhi yun Wu Title: Manager Company: ACOUSTMAX INTERNATIONAL CO., LTD

ACOUSTMAX INTERNATIONAL CO., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Jan. 19, 2021 Subject; Request for Confidentiality FCC ID: 2AAIN-MNPAMB283 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Zhi yun Wu Title: Manager

Model Difference Declaration To Whom It May Concern, We,ACOUSTMAX INTERNATIONAL CO., LTD (MONSTER MB283) Trademark: MONSTER; Model Number: MNPA-MB283, MNPA- MB283-C, MNPA-MB283-2 All model’s the function, software and electric circuit are the same, only model named different. Test sample model: MNPA-MB283 Please contact me if you have any question. Name: Zhi yun Wu Date: Jan. 19, 2021 Title: Manager Signature of applicant:

Annex A External Photos Model: MNPA-MB283 Page 1 of 4 Model: MNPA-MB283 Page 2 of 4 Model: MNPA-MB283 Page 3 of 4 Model: MNPA-MB283 Page 4 of 4

FCC ID LABEL: Label Location Width: 2cm Long: 4cm FCC ID: 2AAIN-MNPAMB283 Product name: MONSTER MB283 Model No.: MNPA-MB283 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.

Annex B Internal Photo Model: MNPA-MB283 Page 1 of 3 Antenna Model: MNPA-MB283 Page 2 of 3 Model: MNPA-MB283 Page 3 of 3

MPE ESTIMATION FCC ID: 2AAIN-MNPAMB283 1, Limit for General Population/ Uncontrolled Exposures Frequency Power density (mW/ cm 2 ) Averaging time(minutes) 300MHz----1.5GHz F/1500 30 1.5GHz---100GHz 1.0 30 2, Estimation Result For 2.4G WIFI: Mode Max PK Output power(dBm) Tune Up Power(dBm) Max Tune Up power(mW) Antenna Gain(dBi) Antenna Gain (linear) MPE (mW/cm²) BT -3.74 -4±1(-3) 0.5 0 1 0.0001 Note: Note: The estimation distance is 20cm The device could not transmit simultaneously in BT. Note: PK Output power= conducted power. Conducted power see the test report HK2101050122-E. Gantenna gain=0dBi when the minimum test separation distance is >20 cm, a distance of 20 cm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.0001mW/cm² which is< 1.0mW/cm², RF Exposure testing is not required. -------The End-------

Page 1 of 45 Report No.: HK2101050122-E TEST REPORT FCC PART 15 SUBPART C 15.247 Test report On Behalf of ACOUSTMAX INTERNATIONAL CO., LTD For MONSTER MB283 Model No.: MNPA-MB283, MNPA-MB283-C, MNPA-MB283-2 FCC ID: 2AAIN-MNPAMB283 Prepared for : ACOUSTMAX INTERNATIONAL CO., LTD Unit D16/F Cheuk Nang Plaza 250 Hennessy Road WanchaiHongKong. Hongkong, China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1F, B2 Building, Junfeng Zhongcheng Zhizao Innovation Park, Fuhai Street, Bao'an District, Shenzhen City, China Date of Test: Jan. 05, 2021 ~ Jan. 12, 2021 Date of Report: Jan. 12, 2021 Report Number: HK2101050122-E Page 2 of 45 Report No.: HK2101050122-E TEST RESULT CERTIFICATION Applicant’s name ................. : ACOUSTMAX INTERNATIONAL CO., LTD Address ................................. : Unit D16/F Cheuk Nang Plaza 250 Hennessy Road WanchaiHongKong. Hongkong, China Manufacture's Name ............ : ACOUSTMAX INTERNATIONAL CO., LTD Address ................................. : Unit D16/F Cheuk Nang Plaza 250 Hennessy Road WanchaiHongKong. Hongkong, China Product description Trade Mark: MONSTER Product name ........................... : MONSTER MB283 Model and/or type reference : MNPA-MB283, MNPA-MB283-C, MNPA-MB283-2 Standards ............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................................ : Date (s) of performance of tests ............. : Jan. 05, 2021 ~ Jan. 12, 2021 Date of Issue ........................................... : Jan. 12, 2021 Test Result ............................................... : Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Technical Director Page 3 of 45 Report No.: HK2101050122-E Table of Contents Page 1. SUMMARY............................................................................................................................................................ 5 1.1. TEST STANDARDS ..................................................................................................................................................... 5 1.2. TEST DESCRIPTION ........................................................................................................................................................ 5 1.3. TEST FACILITY .............................................................................................................................................................. 6 1.4. STATEMENT OF THE MEASUREMENT UNCERTAINTY ............................................................................................................... 6 2. GENERAL INFORMATION ....................................................................................................................................... 7 2.1. ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 7 2.2. GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 7 2.3. DESCRIPTION OF TEST MODES AND TEST FREQUENCY .......................................................................................................... 8 2.4. EQUIPMENTS USED DURING THE TEST .............................................................................................................................. 9 2.5. RELATED SUBMITTAL(S) / GRANT (S) .............................................................................................................................. 10 2.6. MODIFICATIONS ......................................................................................................................................................... 10 2.7. DESCRIPTION OF TEST SETUP ................................................................................................................................ 10 3. TEST CONDITIONS AND RESULTS ......................................................................................................................... 11 3.1. CONDUCTED EMISSIONS TEST ....................................................................................................................................... 11 3.2. RADIATED EMISSIONS AND BAND EDGE .......................................................................................................................... 14 3.3. MAXIMUM PEAK CONDUCTED OUTPUT POWER ............................................................................................................... 25 3.4. 20DB BANDWIDTH ..................................................................................................................................................... 26 3.5. FREQUENCY SEPARATION ............................................................................................................................................. 29 3.6. NUMBER OF HOPPING FREQUENCY ................................................................................................................................. 31 3.7. TIME OF OCCUPANCY (DWELL TIME) .............................................................................................................................. 33 3.8. OUT‐OF‐BAND EMISSIONS ............................................................................................................................................ 36 3.9. PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................................................................…

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Test Model：MNPA-MB283 Radiated Emission Conducted Emission