2ACP4CBTA850Bluetooth EARPHONE

Sentry Industries Limited UNIT 904, 9/F CHINACHEN GOLDEN PLAZA, 77 MODY ROAD, TSIM SHA TSUI EAST, KOWLOON, HONG KONG, CHINA Aug. 1, 2024 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID: 2ACP4CBTA850 Models: BTA850, BTA899, BT993, BT998, BT999, BTA900, BTA905, BTA910, BTA920, BTA930, BTA940, BTA950, BTA990, BTA993, BTA998, BTA999, BTO300 To Whom It May Concern: We, The Sentry Industries Limited hereby declare that the model : BTA899, BT993, BT998, BT999, BTA900, BTA905, BTA910, BTA920, BTA930, BTA940, BTA950, BTA990, BTA993, BTA998, BTA999, BTO300 is identical with the model : BTA850, except the model name. Except for the different above, no other modification is performed. Sincerely, Sentry Industries Limited Signature: [Peetu Melwani, Manager]

Sentry Industries Limited UNIT 904, 9/F CHINACHEN GOLDEN PLAZA, 77 MODY ROAD, TSIM SHA TSUI EAST, KOWLOON, HONG KONG, CHINA Letter of Authorization Company: Sentry Industries Limited Address: UNIT 904, 9/F CHINACHEN GOLDEN PLAZA, 77 MODY ROAD, TSIM SHA TSUI EAST, KOWLOON, HONG KONG, CHINA Product Name: Bluetooth EARPHONE Model Number(s): BTA850, BTA899, BT993, BT998, BT999, BTA900, BTA905, BTA910, BTA920, BTA930, BTA940, BTA950, BTA990, BTA993, BTA998, BTA999, BTO300 Product Description: Bluetooth EARPHONE 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: Aug. 1, 2024 Name: Peetu Melwani Title: Manager Company: Sentry Industries Limited

Report No.: AGC08189240701AP02 Page 1 of 4 EXTERNAL PHOTOS All view of EUT Report No.: AGC08189240701AP02 Page 2 of 4 Top view of EUT Bottom view of EUT Report No.: AGC08189240701AP02 Page 3 of 4 Front view of EUT Back view of EUT Report No.: AGC08189240701AP02 Page 4 of 4 Left view of EUT Right view of EUT ****************************************End of Report*************************************

FCC ID Label Location 20mm*10mm The product does not have enough space to place the label, and FCC ID label is reflected in the user manual and package, as below: FCC ID: 2ACP4CBTA850

Page 1 of 10 RF Exposure Report Report No.: AGC08189240701FH01 FCC ID : 2ACP4CBTA850 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Bluetooth EARPHONE BRAND NAME : SENTRY MODEL NAME : BTA850, BTA899, BT993, BT998, BT999, BTA900, BTA905, BTA910, BTA920, BTA930, BTA940, BTA950, BTA990, BTA993, BTA998, BTA999, BTO300 APPLICANT : Sentry Industries Limited DATE OF ISSUE : Aug. 01, 2024 STANDARD(S) : FCC KDB 447498 D01 V06 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC08189240701FH01 Page 2 of 10 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Aug. 01, 2024 Valid Initial Release Report No.: AGC08189240701FH01 Page 3 of 10 Table of Contents 1. General Information ........................................................................................................................................ 4 2. Product Information ........................................................................................................................................ 5 2.1 Product Technical Description ................................................................................................................... 5 3. Test Environment ............................................................................................................................................ 6 3.1 Address Of The Test Laboratory ............................................................................................................... 6 3.2 Test Facility ................................................................................................................................................ 6 3.3 Environmental Conditions ......................................................................................................................... 7 4. Portable Device Evaluation Method and Limit ............................................................................................. 8 5. Mobile Device Evaluation Method and Limit ................................................................................................ 9 6. Measurement Results ................................................................................................................................... 10 7. Measurement Evaluation .............................................................................................................................. 10 Report No.: AGC08189240701FH01 Page 4 of 10 1. General Information Applicant Sentry Industries Limited Address UNIT 904, 9/F CHINACHEN GOLDEN PLAZA, 77 MODY ROAD, TSIM SHA TSUI EAST, KOWLOON, HONG KONG, CHINA Manufacturer Guangdong SAIYO Eletronics Industry Co., Ltd Address Xibian Industry Zone, Tongyu Town,Chaoyang District, Shantou City, Guangdong Province, China Factory Guangdong SAIYO Eletronics Industry Co., Ltd Address Xibian Industry Zone, Tongyu Town, Chaoyang District, Shantou City, Guangdong Province, China Product Designation Bluetooth EARPHONE Brand Name SENTRY Test Model BTA850 Series Model(s) BTA899, BT993, BT998, BT999, BTA900, BTA905, BTA910, BTA920, BTA930, BTA940, BTA950, BTA990, BTA993, BTA998, BTA999, BTO300 Difference Description All the same except the model name Date of receipt of test item Jul. 23, 2024 Date of Test Jul. 23, 2024~ Aug. 01, 2024 Deviation from Standard No any deviation from the test method Condition of Test Sample Normal Test Result Pass Test Report Form No AGCER-FCC-RF Exposure-V1 Note: The test results of this report relate only to the tested sample identified in this report. Prepared By Bibo Zhang (Project Engineer) Aug. 01, 2024 Reviewed By Calvin Liu (Reviewer) Aug. 01, 2024 Approved By Max Zhang Authorized Officer Aug. 01, 2024 Report No.: AGC08189240701FH01 Page 5 of 10 2. Product Information 2.1 Product Technical Description Frequency Band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Bluetooth: 2.402GHz ~ 2.480GHz Other: Hardware Version V1.1 Software Version V1.0 Modulation Type BLE GFSK 1Mbps GFSK 2Mbps Device Category Portable (<20cm separation) Mobile (>20cm separation) Others: Antenna Diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Antenna Designation Multilayer chip Antenna Antenna Gain 2.48dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Report No.: AGC08189240701FH01 Page 6 of 10 3. Test Environment 3.1 Address Of The Test Laboratory Laboratory: Attestation of Global Compliance (Shenzhen) Co., Ltd. Address: 1-2/F, Building 19, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China 3.2 Test Facility The test facility is recognized, certified, or accredited by the following organizations: CNAS-Lab Code: L5488 Attestation of Global Compliance (Shenzhen) Co., Ltd. has been assessed and proved to follow CNAS-CL01 Accreditation Criteria for Testing and Calibration Laboratories (identical to ISO/IEC17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories.) A2LA-Lab Cert. No.: 5054.02 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been accredited by A2LA for technical competence in the field of electrical testing, and proved to follow ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories and any additional program requirements in the identified field of testing. FCC-Registration No.: 975832 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the FCC (Federal Communications Commission). The acceptance letter from the FCC is maintained in our files with Registration 975832. IC-Registration No.: 24842(CAB identifier: CN0063) Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the Certific…

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产品规格承认书 SPECIFICATIONS 深圳市朋伴兴业科技有限公司 N:蓝牙天线 ARTNo: CUSTOMER: DESCRIPTIO CUSTOMERP OURMODELNO:PBX2012MA02 DATE:2020/12/22 Address:Room605,Building4,1970SciencePark,MinzhiCommunity, MinzhiStreet,LonghuaDistrict,Shenzhen (APPROVEDSIGNATURE) PAGE1 OF5 PBX2012MA02Specification OperatingTemp.:-40°C~+85°C 1.FEATURES: ●Lightweight,compact ●Widebandwidth,lowcost ● Built-inantennawithhighgain 2.APPLICATIONS: ●Bluetooth,WirelessLAN,MobileTV ●HomeRFSystem,etc 3.PRODUCTIDENTIFICATION C HIP 2012 2 1 (1)(2)(3) (1)Producttype:MultilayerchipAntenna (2)ExternalDimensions(L×W)(mm):2.0*1.2 4.SHAPEANDDIMENSIONS: SHAPEANDDIMENSIONS LWHA 2.0±0.21.2±0.20.55±0.10.4±0.1 UNLESSOTHERSPECIFIEDTOLERANCESON： X=±X.X=±X.XX= ANGLES=±HOLEDIA=± ShenzhenPengbianIndustrialTechnologyCo.,LTD SCALE：N/AUNIT：mm THISDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-21Specification DOCUMENT NO. 2012 SPECREV. P1 PAGE 2 OF5 深圳市朋伴兴业科技有限公司 TERMINAL-CONFIGURATION EVALUATIONBOARD APPLICATIONGUIDE UNLESSOTHERSPECIFIEDTOLERANCESON： X=±X.X=±X.XX= ANGLES=±HOLEDIA=± ShenzhenPengbianIndustrialTechnologyCo.,LTD SCALE：N/AUNIT：mm THISDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:Sera APPROVEDBY:XD TITLE：CHIP2450-21Specification DOCUMENT NO. 2012 SPECREV. P1 PAGE 3 OF5 深圳市朋伴兴业科技有限公司 MarkFrequencyVSWR 1 2400MHz3.04 2 2450MHz1.15 3 2500MHz2.57 UNLESSOTHERSPECIFIEDTOLERANCESON： X=±X.X=±X.XX= ANGLES=±HOLEDIA=± ShenzhenPengbianIndustrialTechnologyCo.,LTD SCALE：N/AUNIT：mm THISDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-21Specification DOCUMENT NO. 2012 SPECREV. P1 PAGE 4 OF5 PAGE5 OF5 深圳市朋伴兴业科技有限公司 RadiationPattern TheGainpatternismeasuredinINPAQ’sFAR-fieldchamber.DUTisplacedonthetableof rotator,astandardhornantennaandVectorNetworkAnalyzerisusedtocollectdata. ◎3DGainPattern(2400MHz) ◎ 2DGainPattern(2400MHz) UNLESSOTHERSPECIFIEDTOLERANCESON： X=±X.X=±X.XX= ANGLES=±HOLEDIA=± ShenzhenPengbianIndustrialTechnologyCo.,LTD SCALE：N/AUNIT：mm THISDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-21Specification DOCUMENT NO. 2012 SPECREV. P1

Page 1 of 74 FCC Test Report Report No.: AGC08189240701FR01 FCC ID : 2ACP4CBTA850 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Bluetooth EARPHONE BRAND NAME : SENTRY MODEL NAME : BTA850, BTA899, BT993, BT998, BT999, BTA900, BTA905, BTA910, BTA920, BTA930, BTA940, BTA950, BTA990, BTA993, BTA998, BTA999, BTO300 APPLICANT : Sentry Industries Limited DATE OF ISSUE : Aug. 01, 2024 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC08189240701FR01 Page 2 of 74 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Aug. 01, 2024 Valid Initial Release Report No.: AGC08189240701FR01 Page 3 of 74 Table of Contents 1. General Information ........................................................................................................................................ 5 2. Product Information ........................................................................................................................................ 6 2.1 Product Technical Description ................................................................................................................... 6 2.2 Test Frequency List ................................................................................................................................... 6 2.3 Related Submittal(S) / Grant (S) ............................................................................................................... 7 2.4 Test Methodology ...................................................................................................................................... 7 2.5 Receiver Input Bandwidth ......................................................................................................................... 7 2.6 Equally Average Use of Frequencies and Behaviour................................................................................ 7 2.7 Pseudorandom Frequency Hopping Sequence ........................................................................................ 8 2.8 Special Accessories .................................................................................................................................. 9 2.9 Equipment Modifications ........................................................................................................................... 9 2.10 Antenna Requirement ............................................................................................................................. 9 3. Test Environment .......................................................................................................................................... 10 3.1 Address of The Test Laboratory .............................................................................................................. 10 3.2 Test Facility .............................................................................................................................................. 10 3.3 Environmental Conditions ....................................................................................................................... 11 3.4 Measurement Uncertainty ....................................................................................................................... 11 3.5 List of Equipment Used ........................................................................................................................... 12 4.System Test Configuration ............................................................................................................................ 14 4.1 EUT Configuration ................................................................................................................................... 14 4.2 EUT Exercise ........................................................................................................................................... 14 4.3 Configuration of Tested System .............................................................................................................. 14 4.4 Equipment Used in Tested System ......................................................................................................... 14 4.5 Summary of Test Results ........................................................................................................................ 15 5. Description of Test Modes ........................................................................................................................... 16 6. RF Output Power Measurement .................................................................................................................. 17 6.1 Provisions Applicable .............................................................................................................................. 17 6.2 Measurement Procedure ......................................................................................................................... 17 6.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 17 6.4 Measurement Result ............................................................................................................................... 18 7. 20dB Bandwidth and 99% Occupied Bandwidth Measurement ............................................................... 24 7.1 Provisions Applicable .............................................................................................................................. 24 7.2 Measurement Procedure ......................................................................................................................... 24 7.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 24 7.4 Measurement Results .......................................................................................…

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Report No.: AGC08189240701AP01 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC08189240701AP01 Page 2 of 2 RF CONDUCTED TEST SETUP ****************************************End of Report*************************************