P27-SSEX5R0ULE Repeater

FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:March13,2023 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:P27-SSEX5R0 SercommCorporation(“theapplicant”)certifiesthattheequipmentforwhichauthorizationissoughtis not“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules. Sincerely, ________________ Name:NickWu Title:Manager Email:[email protected] Date:March13,2023

FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:March13,2023 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:P27-SSEX5R0 SercommCorporation(“theapplicant”)certifiesthat,asofthedateofthefilingoftheapplication,the applicantisnotidentifiedontheCoveredListasanentityproducing“covered”equipment. Sincerely, ________________ Name:NickWu Title:Manager Email:[email protected] Date:March13,2023

U.S. Agent for Service of Process Attestation To the attention of Federal Communications Commission Authorization and Evaluation Division U.S. Agent Company Name: TianHeng Consulting, LLC FRN: 0033401258 Contact Name: Hualing Dong Street Address: 392 Andover Street, Wilmington, MA 01887, United States Telephone No: +1 (617) 997-4010 Email: [email protected] This letter is to confirm that we have accepted the responsibility to act as the designated U.S. Agent for service of process as required by §2.911(d)(7) on behalf of theApplicantnoted below. U.S. Agent Signature: Date:2023-03-14 Signed byHualing Dong Applicant Companyname:SercommCorporation FRN:0015548027 FCCID:P27-SSEX5R0 ContactName:NickWu StreetAddress:8F,No.3-1,YuanQuSt,NanKang City/Province/Zip:Taipei,Taiwan,115 TelephoneNo:+886-2-2655-3988 Email:[email protected] ThisletteristoconfirmthattheApplicanthasdesignatedtheU.SAgentnotedaboveforthe purposeofacceptingserviceofprocessontheirbehalfasrequiredby§2.911(d)(7).The Applicantfurtheracknowledgesacceptancetomaintainanagentfornolessthanoneyearafter thegranteehasterminatedallmarketingandimportationortheconclusionofanyCommission- relatedproceedinginvolvingtheequipment. ApplicantSignature: Date:2023-03-14 SignedbyNickWu

ConfidentialityRequestLetter FederalCommunicationsCommission AuthorizationandEvaluationDivision FCCID:P27-SSEX5R0 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequest confidentialtreatmentofinformationaccompanyingthisapplicationasoutlined below: 1.BlockDiagram 2.Schematics 3.OperationalDescription Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesemattersmightbeharmfultothe applicantandprovideunjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoRule0.457,disclosureofthisapplication andallaccompanyingdocumentationwillnotbemadebeforethedateoftheGrant forthisapplication. Sincerely, _________________ Name:NickWu Title:Manager Email:[email protected] Date:March13,2023

DeclarationofAuthorization We Name:SercommCorporation Address:8F,No.3-1,YuanQuSt.,NanKang,Taipei115,Taiwan,R.O.C. Declarethat: NameRepresentativeofagent:MarlinChen AgentCompanyname:MRTTechnology(Suzhou)Co.,Ltd Address:D8Building,YouxinIndustrialPark,No.2 Tian'edangRd.,WuzhongEconomicDevelopment Zone City:Suzhou Country:China isauthorizedtoapplyforCertificationofthefollowingproduct(s): Product: ULERepeater FCCID:P27-SSEX5R0 ModelNo.:SSEX5R0-29 xxxxx (the1stxshouldbe"blank"or"-";therestxcould be0to9,AtoZ,atoz,"blank"or"-",forthe marketingpurpose) Sincerely, ________________ Name:NickWu Title:Manager Email:[email protected] Date:March13,2023

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Report No.: 2302RSU041-UE 1 of 5 EUT Photograph (1) EUT Photo (2) EUT Photo Report No.: 2302RSU041-UE 2 of 5 (3) EUT Photo (4) EUT Photo Report No.: 2302RSU041-UE 3 of 5 (5) EUT Photo (6) EUT Photo Report No.: 2302RSU041-UE 4 of 5 (7) EUT Photo (8) EUT Photo Report No.: 2302RSU041-UE 5 of 5 (9) EUT Photo (10) EUT Photo

MRT Technology (Suzhou) Co., Ltd Report No.: 2302RSU041-U3 Phone: +86-512-66308358 Report Version: V01 Web: www.mrt-cert.com Issue Date: 2023-03-16 Template Version:0.0 1 of 11 RF Exposure Evaluation Declaration FCC ID: P27-SSEX5R0 Applicant: Sercomm Corporation Product: ULE Repeater Model No.: SSEX5R0-29xxxxx (the 1st x should be "blank" or "-"; the rest x could be 0 to 9, A to Z, a to z, "blank" or "-", for the marketing purpose) Brand Name: ADT FCC Classification: Unlicensed PCS Base Station (PUB) FCC Rule Part(s): FCC Part 2.1091 Received Date 2023-02-24 Reviewed By: Approved By: The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standards through the calibration of the equipment and evaluated measurement uncertainty herein. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. Report No.: 2302RSU041-U3 2 of 11 Revision History Report No. Version Description Issue Date Note 2302RSU041-U3 Rev. 01 Initial Report 2023-03-16 Valid Report No.: 2302RSU041-U3 3 of 11 CONTENTS Description Page 1. General Information ................................................................................................................................. 4 1.1. Applicant ........................................................................................................................................ 4 1.2. Manufacturer .................................................................................................................................. 4 1.3. Testing Facility ............................................................................................................................... 4 1.4. Product Information........................................................................................................................ 5 1.5. Radio Specification ........................................................................................................................ 5 1.6. Antenna Details .............................................................................................................................. 5 1.7. Applied Standards.......................................................................................................................... 6 2. RF Exposure Evaluation ......................................................................................................................... 7 2.1. Test Limits ...................................................................................................................................... 7 2.1. Test Exemptions ............................................................................................................................. 8 2.2. Test Result ................................................................................................................................... 11 Appendix A - EUT Photograph ...................................................................................................................... 12 Report No.: 2302RSU041-U3 4 of 11 1. General Information 1.1. Applicant Sercomm Corporation 8F, No. 3-1, YuanQu St., NanKang, Taipei 115, Taiwan, R.O.C. 1.2. Manufacturer Sercomm Corporation 8F, No. 3-1, YuanQu St., NanKang, Taipei 115, Taiwan, R.O.C. 1.3. Testing Facility Test Site – MRT Suzhou Laboratory Laboratory Location (Suzhou - Wuzhong) D8 Building, No.2 Tian’edang Rd., Wuzhong Economic Development Zone, Suzhou, China Laboratory Location (Suzhou - SIP) 4b Building, Liando U Valley, No.200 Xingpu Rd., Shengpu Town, Suzhou Industrial Park, China Laboratory Accreditations A2LA: 3628.01 CNAS: L10551 FCC: CN1166 ISED: CN0001 VCCI: R-20025 G-20034 C-20020 T-20020 R-20141 G-20134 C-20103 T-20104 Test Site – MRT Shenzhen Laboratory Laboratory Location (Shenzhen) 1G, Building A, Junxiangda Building, Zhongshanyuan Road West, Nanshan District, Shenzhen, China Laboratory Accreditations A2LA: 3628.02 CNAS: L10551 FCC: CN1284 ISED: CN0105 Test Site – MRT Taiwan Laboratory Laboratory Location (Taiwan) No. 38, Fuxing 2nd Rd., Guishan Dist., Taoyuan City 333, Taiwan (R.O.C.) Laboratory Accreditations TAF: L3261-190725 FCC: 291082, TW3261 ISED: TW3261 Report No.: 2302RSU041-U3 5 of 11 1.4. Product Information Product Name ULE Repeater Model No. SSEX5R0-29xxxxx (the 1st x should be "blank" or "-"; the rest x could be 0 to 9, A to Z, a to z, "blank" or "-", for the marketing purpose) Serial No. ADT Antenna Information Refer to section 1.6 Working Voltage 110V AC Note 3 or Re-chargeable Battery:1200mA battery Note 4 Accessories Battery Model: FT852650P Output: 1200mAh 2.44Wh 3.7V Remark: 1. The information of EUT was provided by the manufacturer, and the accuracy of the information shall be the responsibility of the manufacturer. 2. PSU onboard and plug support standard US wall outlet. 3. In normal operation, the EUT is powered by AC. Only when the AC is powered off, the EUT is powered by battery 1.5. Radio Specification Frequency Range 1921.536 ~ 1928.448MHz Channel Number 5 RF Channels, 5*12 = 60 TDMA Duplex Channels Type of Modulation GFSK Max. Number of timeslots 24 Max. Number of active timeslots 1 (full slot – 416.7μs, long slot – 694.4μs) 1.6. Antenna Details Antenna Type Frequency Band (MHz) T X Paths Max Antenna Gain (dBi) DECT Module - 1# FIPA 1920 ~ 1930 1 1.8 DECT Module - 2# FIPA 1920 ~ 1930 1 2.9 Report No.: 2302RSU041-U3 6 of 11 1.7. Applied Standards According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards: ⚫ FCC Part 2.1091 ⚫ KDB 447498 D04 Interim General RF Exposure Guidance v01 Report No.: 2302RSU041-U3 7 of 11 2. RF Exposure Evaluation 2.1. Test Limits 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 MA…

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Copyright,Sercomm Corporation, All Rights Reserved. ADT SD-EXT09 Antenna Test Report Date : Jun. 9, 2022 Prepared by : Jerry Ko Confidential & Proprietary 2 Outline •Antenna Structure & Placement •Return Loss & Isolation •Radiation Pattern •Peak Gain & Efficiency Confidential & Proprietary 3 Antenna No. Operating Band TypeMaterialFeedingSize Ant 1BTChipCeramicTrace3.2(L) x 1.6(W) x 0.6(H) mm 3 Ant 2DECTPIFAMetalTrace12.7(L) x 9.4(W) x 6.4(H) mm 3 Ant 3DECTPIFAMetalTrace18.9(L) x 7.2(W) x 6.4(H) mm 3 Antenna Structure & Placement Ant 1 Ant 2 Ant 3 Confidential & Proprietary 4 BT Matching Circuit Ant 1 2.4 nH 1.8 pF Murata 1.8 pF part Num.= 1G418977WS 2.4 nH part Num.= 3602420BCL 2.4 nH part Num.= 3602420BCL 1.8 pF part Num.= 1G418977WS Confidential & Proprietary 5 Return Loss -Ant 1 Confidential & Proprietary 6 Return Loss -Ant 2 Confidential & Proprietary 7 Return Loss -Ant 3 Confidential & Proprietary 8 Isolation -Ant 1 to Ant 2 Confidential & Proprietary 9 Isolation -Ant 1 to Ant 3 Confidential & Proprietary 10 Isolation -Ant 2 to Ant 3 Confidential & Proprietary 11 Radiation Pattern –Ant 1 @ BT Y X Z XZ-Plane XY-Plane YZ-Plane Confidential & Proprietary 12 Radiation Pattern –Ant 2 @ DECT Y X Z XZ-Plane XY-Plane YZ-Plane Confidential & Proprietary 13 Radiation Pattern –Ant 3 @ DECT Y X Z XZ-Plane XY-Plane YZ-Plane Confidential & Proprietary 14 Peak Gain & Efficiency Frequency1.92GHz1.925GHz1.93GHz2.4GHz2.45GHz2.5GHz Ant 1 (BT) Efficiency (%) 12 1513 Peak Gain (dBi) -3.5-1.9-1.6 Ant 2 (DECT) Efficiency (%) 6566 66 Peak Gain (dBi) 1.71.71.8 Ant 3 (DECT) Efficiency (%) 666765 Peak Gain (dBi) 2.92.92.7

MRT Technology (Suzhou) Co., Ltd Report No.: 2302RSU041-U2 Phone: +86-512-66308358 Report Version: V02 Web: www.mrt-cert.com Issue Date: 2023-03-22 Template Version:0.0 1 of 61 RF MEASUREMENT REPORT FCC ID: P27-SSEX5R0 Applicant: Sercomm Corporation Product: ULE Repeater Model No.: SSEX5R0-29xxxxx (the 1st x should be "blank" or "-"; the rest x could be 0 to 9, A to Z, a to z, "blank" or "-", for the marketing purpose) Brand Name: ADT FCC Classification: Unlicensed PCS Base Station FCC Rule Part(s): FCC Part 15, Subpart D Received Date 2023-02-24 Result: Complies Test Date: 2023-03-06 ~ 2023-03-08 Reviewed By: Approved By: The test results relate only to the samples tested. This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in ANSI C63.17. Test results reported herein relate only to the item(s) tested. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. Report No.: 2302RSU041-U2 2 of 61 Revision History Report No. Version Description Issue Date Note 2302RSU041-U2 Rev. 01 Initial Report 2023-03-16 Invalid 2302RSU041-U2 Rev. 02 Modify the description of out-of-band emission 2023-03-22 Valid Report No.: 2302RSU041-U2 3 of 61 CONTENTS Description Page 1. General Information .................................................................................................................................. 6 1.1. Applicant......................................................................................................................................... 6 1.2. Manufacturer .................................................................................................................................. 6 1.3. Testing Facility ................................................................................................................................ 6 1.4. Product Information ........................................................................................................................ 7 1.5. Radio Specification ........................................................................................................................ 8 1.6. Working Frequencies ..................................................................................................................... 8 1.7. Description of Available Antennas .................................................................................................. 9 2. Test Configuration .................................................................................................................................. 10 2.1. Test Mode .................................................................................................................................... 10 2.2. Test System Connection Diagram ............................................................................................... 10 2.3. Test System Details ..................................................................................................................... 10 2.4. Test Environment Condition ......................................................................................................... 10 2.5. Labeling Requirements ................................................................................................................ 11 2.6. Automatic Discontinuation of Transmission ................................................................................. 11 3. Antenna Requirements .......................................................................................................................... 12 4. Measuring Instrument ............................................................................................................................ 13 5. Measurement Uncertainty ...................................................................................................................... 14 6. Test Result ............................................................................................................................................... 15 6.1. Summary ...................................................................................................................................... 15 6.2. AC Power Line Conducted Measurement Emissions .................................................................. 16 6.2.1. Test Limit .................................................................................................................................. 16 6.2.2. Test Setup ................................................................................................................................ 16 6.2.3. Test Result ............................................................................................................................... 17 6.3. Emission Bandwidth Measurement.............................................................................................. 19 6.3.1. Test Limit .................................................................................................................................. 19 6.3.2. Test Procedure used ................................................................................................................ 19 6.3.3. Test Setup ................................................................................................................................ 19 6.3.4. Test Result ............................................................................................................................... 20 6.4. Peak Power Output ...................................................................................................................... 22 6.4.1. Test Limit .................................................................................................................................. 22 6.4.2. Test Procedure Used ....................…

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Report No.: 2302RSU041-UT RF Test Setup Photo Test Mode 1 Description: Front View of Conducted Emission Test Setup Test Mode 1 Description: Back View of Conducted Emission Test Setup Report No.: 2302RSU041-UT Description: Radiated Spurious Emission Test Setup for Below 1GHz Description: Radiated Spurious Emission Test Setup for Above 1GHz Report No.: 2302RSU041-UT Description: Conducted Test Setup