2A8YW-PC394A-R2.4G Wireless Receiver

FCC STATEMENT 1. 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 interfer ence,and (2) This device must accept any interference receiv ed, including interfer ence that may cause undesired operation. 2. Changes or modifications not expr essly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits ar e desig ned to provid e reasonable pr otection ag ainst harmful interfer ence in a residential installation. This equipment generates uses and can radiate radio fr equency energy and, if not installed and used in accordance with the instructions, may cause harmful interfer ence to radio communications. However, there is no guarantee that interfer ence will not occur in a particular installation. If thi s equipment does cause harmful interference to radio or televis ion reception, which can be determined by turning the equipment off and on, the user is encour aged to tr y to correct the inter fer ence by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separ ation between the equipment and receiv er. Connect the equipment into an outlet on a circuit different from that to which the receiv er is connected. Consult the dealer or an experienced radio/TV technician for help. RF warning statement: The device has been evaluated to meet general RF exposur e requirement. The device can be used in portable exposur e conditi on without restr iction.

DONGGUANKEYCEOELECTRONICSTECHNOLOGYCO.,LTD I,thesigner,CHUANDALAI Theonlydifferencebetweenthesemodelsisthemodelname.Theyareelectricallyidentical. ItemName：2.4GWirelessReceiver ModelNumber:R12 AdditionalModel:R13,R15,R16,R17,XXX,XXXX,XXXXX (Xcanbe0-9&A-Z&Blank) <Signature> Name:CHUANDALAI Title:Generalmanager Company:DONGGUANKEYCEOELECTRONICSTECHNOLOGYCO.,LTD

AntennaSpecification ShenzhenHuaxingShuangchenTechnologyCo.,Ltd Address:4thFloor,BuildingA2,DonghuaIndustrialZone, SanweiIntersection,Bao'anAvenue,Bao'anDistrict,Shenzhen, Guangdong Specifications Summary ITEMSPEC. ModelNameR12-8510 CenterFrequency2405MHz 2451MHz 2475MHz 1.6dBi 1.48dBi 1.35dBi MAX.GAIN1.6dBi PolarizationHorizontal AzimuthBeamPatternOmni-directional Impedance50Ω AntennaPhoto & Length ( mm ) 1.Mainantenna:2405MHz 1.1 Horizontal Frequency ( MHZ ):2405 AntennaPolarity :Horizontal MaximumValue ( dBi ):1.6 AverageGain ( dBi ):-1.4 MinimumGain ( dBi ):-61.26 1.2Vertical Frequency ( MHZ ):2405 AntennaPolarity :Vertical MaximumValue ( dBi ):-2.85 AverageGain ( dBi ):-12 MinimumGain ( dBi ):-64 2.Mainantenna:2451MHz 2.1Horizontal Frequency ( MHZ ):2451 AntennaPolarity :Horizontal MaximumValue ( dBi ):1.34 AverageGain ( dBi ):-1.2 MinimumGain ( dBi ):-60 2.2Vertical Frequency ( MHZ ):2451 AntennaPolarity :Vertical MaximumValue ( dBi ):-3.0 AverageGain ( dBi ):-12 MinimumGain ( dBi ):-54 3.Mainantenna:2475MHz 2.1Horizontal Frequency ( MHZ ):2475 AntennaPolarity :Horizontal MaximumValue ( dBi ):1.4 AverageGain ( dBi ):-2.5 MinimumGain ( dBi ):-52 2.2Vertical Frequency ( MHZ ):2475 AntennaPolarity :Vertical MaximumValue ( dBi ):-4.5 AverageGain ( dBi ):-11 MinimumGain ( dBi ):-50

DONGGUANKEYCEOELECTRONICSTECHNOLOGYCO.,LTD DATE:2022.11.12 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 AuthoritytoActasAgent Onourbehalf,IappointESTTechnologyCo.,Ltd.Address:Chilingxiang,Qishantou,Santun, Houjie,Dongguan,Guangdong,China(NameofAgentcompanynameandaddress)toact asouragentinthepreparationofthisapplicationforequipmentcertification.Icertifythat submitteddocumentsproperlydescribethedeviceorsystemforwhichequipment certificationissought.Ialsocertifythateachunitmanufactured,importedormarketed,as definedintheFederalCommunicationsCommission’sregulationswillhaveaffixedtoita labelidenticaltothatsubmittedforapprovalwiththisapplication. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonour behalf,Iacknowledgethatallresponsibilityforcomplyingwiththetermsandconditions forcertification,stillresideswithDONGGUANKEYCEOELECTRONICSTECHNOLOGYCO.,LTD Address:No.1,factorybuilding,Tangkou,Miaoyi,MiaobianwangVillage,Shipai Town,Dongguan,Guangdong,China(ApplicantNameandaddress) <Signature> Name:CHUANDALAI Title:Generalmanager Company:DONGGUANKEYCEOELECTRONICSTECHNOLOGYCO.,LTD

DONGGUANKEYCEOELECTRONICSTECHNOLOGYCO.,LTD DATE:2022.11.12 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2A8YW-PC394A-R ProductName:2.4GWirelessReceiver RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommissionsrules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: (Listherethedocumentsforwhichyouareseekingconfidentiality–forexample...) xSchematics xBlockdiagram x Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. <Signature> Name:CHUANDALAI Title:Generalmanager Company:DONGGUANKEYCEOELECTRONICSTECHNOLOGYCO.,LTD

Externalphotos M/N:R12 Externalphotos M/N:R12 Externalphotos M/N:R12

Internalphotos M/N:R12 RF Antenna

FCC ID: 2A8YW-PC394A-R EST Technology Co., Ltd Report No. ESTE-R2211100 Page 1 of 3 FCC RF EXPOSURE REPORT DONGGUAN KEYCEO ELECTRONICS TECHNOLOGY CO.,LTD 2.4G Wireless Receiver Model Number: R12 Additional Model: R13, R15, R16, R17, XXX, XXXX, XXXXX (X can be 0-9 & A-Z & blank) FCC ID: 2A8YW-PC394A-R Applicant: DONGGUAN KEYCEO ELECTRONICS TECHNOLOGY CO.,LTD Address: No.1,factory building,Tangkou,Miaoyi,Miaobianwang Village, Shipai Town,Dongguan,Guangdong,China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2211100 Date of Test: Oct. 17~Nov. 10, 2022 Date of Report: Nov. 11, 2022 FCC ID: 2A8YW-PC394A-R EST Technology Co., Ltd Report No. ESTE-R2211100 Page 2 of 3 1. Applicable Standards FCC Part 2(Section 2.1093) FCC KDB 447498 D04 Interim General RF Exposure Guidance v01 2. Exposure Evaluation of Portable or Mobile Devices Human exposure to RF emissions from portable devices (47 CFR §2.1093), as defined by the FCC, must be evaluated with respect to the FCC-adopted limits for SAR. Evaluation of mobile devices, as defined by the FCC, may also be performed with respect to SAR limits, but in such cases it is usually simpler and more cost-effective to evaluate compliance with respect to field strength or power density limits. For certain devices that are designed to be used in both mobile and portable configurations similar to those described in 47 CFR §2.1091(d)(4), such as certain desktop phones and wireless modem modules, compliance for mobile configurations is also satisfied when the same device is evaluated for SAR compliance in portable configurations. The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 300 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. FCC ID: 2A8YW-PC394A-R EST Technology Co., Ltd Report No. ESTE-R2211100 Page 3 of 3 3. Evaluation Results Ant gain=1.6dBi, Ant numeric gain=1.445 1.6-2.15= -0.55dBd, Ant numeric gain=0.881 Field strength = 88.67dBuV/m@3m Limited=3060*(0.5/20)^x, x=-log(60/(3060*√f))= 2.72mW P={ [10 (88.67/20) /10 6 *3] 2 / (30*1) }*1000mW =0.221mW < 2.72mW Note: 1. We choose f=2.475GHz to calculate MPE limit as higher frequency will have lower MPE limits. 2. SAR Test Exclusion Thresholds is 2.72mW for separation distance 5mm. Therefore, SAR test is not required. End of Test Report

FCC ID: 2A8YW-PC394A-R EST Technology Co., Ltd Report No.ESTE-R2211099 Page 1 of 49 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of DONGGUAN KEYCEO ELECTRONICS TECHNOLOGY CO.,LTD 2.4G Wireless Receiver Model Number: R12 Additional Model: R13, R15, R16, R17, XXX, XXXX, XXXXX (X can be 0-9 & A-Z & blank) FCC ID: 2A8YW-PC394A-R Applicant DONGGUAN KEYCEO ELECTRONICS TECHNOLOGY CO.,LTD Address: No.1,factory building,Tangkou,Miaoyi,Miaobianwang Village, Shipai Town,Dongguan,Guangdong,China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2211099 Date of Test: Oct. 17~Nov. 10, 2022 Date of Report: Nov. 11, 2022 FCC ID: 2A8YW-PC394A-R EST Technology Co., Ltd Report No.ESTE-R2211099 Page 2 of 49 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION......................................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................. 4 1.1. Description of Device (EUT) ........................................................................................................... 4 1.2. Antenna Information ........................................................................................................................ 4 1.3. Information of RF Cable .................................................................................................................. 4 2. SUMMARY OF TEST ......................................................................................................................... 5 2.1. Summary of test result ...................................................................................................................... 5 2.2. Test Facilities ................................................................................................................................... 6 2.3. Measurement uncertainty ................................................................................................................. 7 2.4. Assistant equipment used for test ..................................................................................................... 7 2.5. Block Diagram ................................................................................................................................. 7 2.6. Test Mode ......................................................................................................................................... 8 2.7. Power Setting of Test Software ........................................................................................................ 8 2.8. Channel List ..................................................................................................................................... 8 2.9. Test Equipment List ......................................................................................................................... 9 3. FIELD STRENGTH OF FUNDAMENTAL ............................................................................................ 11 3.1. Limit ............................................................................................................................................... 11 3.2. Test Setup ....................................................................................................................................... 11 3.3. Spectrum Analyzer Setting ............................................................................................................. 11 3.4. Test Procedure ................................................................................................................................ 12 3.5. Test Result ...................................................................................................................................... 13 4. RADIATED SPURIOUS EMISSIONS AND BAND EDGE ...................................................................... 20 4.1. Limit ............................................................................................................................................... 20 4.2. Test Setup ....................................................................................................................................... 22 4.3. Spectrum Analyzer Setting ............................................................................................................. 23 4.4. Test Procedure ................................................................................................................................ 24 4.5. Test Result ...................................................................................................................................... 25 5. 20DB BANDWIDTH ........................................................................................................................ 37 5.1. Limit ............................................................................................................................................... 37 5.2. Test Setup ....................................................................................................................................... 37 5.3. Spectrum Analyzer Setting ............................................................................................................. 37 5.4. Test Procedure ................................................................................................................................ 37 5.5. Test Condition ................................................................................................................................ 37 5.6. Test Result ...................................................................................................................................... 38 6. AC POWER LINE CONDUCTED EMISSIONS ............................................................................…

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Radiatedemissiontest:Below1GHz Radiatedemissiontest:Above1GHz Conductedemissiontest: