2AC7Z-EK0582.4G Wi-Fi & Bluetooth IoT Module

EK058 User Manual 2.4 GHz Wi­Fi + Bluetooth ® + Bluetooth LE module Built around ESP32 series of SoCs, Xtensa ® dual­core 32­bit LX6 microprocessor Flash up to 8 MB, PSRAM up to MB 25 GPIOs, rich set of peripherals On­board PCB antenna EK058 Pre-release v0.5 Espressif Systems Copyright © 2022 www.espressif.com About This Document This user manual shows how to get started with the EK058 module. Document Updates Please always refer to the latest version onhttps://www.espressif.com/en/support/download/documents. Revision History For revision history of this document, please refer to thelast page. Documentation Change Notification Espressif provides email notifications to keep you updated on changes to technical documentation. Please sub- scribe atwww.espressif.com/en/subscribe. Certification Download certificates for Espressif products fromwww.espressif.com/en/certificates. Contents Contents 1 Overview4 1.1 Module Overview4 2 Get Started on EK0585 2.1 What You Need5 2.2 Hardware Connection5 2.3 Set up Development Environment6 2.3.1 Install Prerequisites6 2.3.2 Get ESP-IDF6 2.3.3 Set up Tools7 2.3.4 Set up Environment Variables7 2.4 Create Your First Project7 2.4.1 Start a Project7 2.4.2 Connect Your Device7 2.4.3 Configure7 2.4.4 Build the Project8 2.4.5 Flash onto the Device9 2.4.6 Monitor10 3 U.S. FCC Statement11 4 Industry Canada Statement15 5 Related Documentation and Resources18 Revision History19 Espressif Systems3EK058 User Manual v0.5 1 Overview 1Overview 1.1Module Overview EK058 is a customized Wi-Fi + Bluetooth + Bluetooth LE MCU module, and comes with a PCB antenna and an 8 MB SPI flash. At the core of EK058 is the ESP32-D0WDR2-V3. The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individually controlled, and the CPU clock frequency is adjustable from 80 MHz to 240 MHz. The chip also has a low-power coprocessor that can be used instead of the CPU to save power while performing tasks that do not require much computing power, such as monitoring of peripherals. This ESP32 chip integrates a rich set of peripherals, ranging from SD card interface, capacitive touch sensors, ADC, DAC, Two-Wire Automotive Interface, to Ethernet, high-speed SPI, UART, I2S, I2C, etc. The power supply voltage range of this module is 3.0 V~3.6 V, and the center frequency range of operating channel is 2412 MHz~2462 MHz. For more information about the hardware and pins, please refer to EK058 Datasheet. Espressif Systems4EK058 User Manual v0.5 2 Get Started on EK058 2Get Started on EK058 2.1What You Need To develop applications for module you need: •1 x EK058 module •1 x Espressif RF testing board •1 x USB-to-Serial board •1 x Micro-USB cable •1 x PC running Linux In this user guide, we take Linux operating system as an example. For more information about the configuration on Windows and macOS, please refer toESP-IDF Programming Guide. 2.2Hardware Connection 1.Solder the EK058 module to the RF testing board as shown in Figure1. Figure 1: Hardware Connection 2.Connect the RF testing board to the USB-to-Serial board via TXD, RXD, and GND. 3.Connect the USB-to-Serial board to the PC. 4.Connect the RF testing board to the PC or a power adapter to enable 5 V power supply, via the Micro-USB cable. 5.During download, connect IO0 to GND via a jumper. Then, turn “ON” the testing board. 6.Download firmware into flash. For details, see the sections below. 7.After download, remove the jumper on IO0 and GND. Espressif Systems5EK058 User Manual v0.5 2 Get Started on EK058 8.Power up the RF testing board again. EK058 will switch to working mode. The chip will read programs from flash upon initialization. Note: IO0 is internally logic high. If IO0 is set to pull-up, the Boot mode is selected. If this pin is pull-down or left floating, the Download mode is selected. For more information on EK058, please refer to EK058 Datasheet. 2.3Set up Development Environment The Espressif IoT Development Framework (ESP-IDF for short) is a framework for developing applications based on the Espressif ESP32. Users can develop applications with ESP32 in Windows/Linux/macOS based on ESP-IDF. Here we take Linux operating system as an example. 2.3.1Install Prerequisites To compile with ESP-IDF you need to get the following packages: •CentOS 7: sudo yum install git wget flex bison gperf python cmake ninja-build ccache dfu-util •Ubuntu and Debian (one command breaks into two lines): sudo apt-get install git wget flex bison gperf python python-pip python-setuptools cmake ninja-build ccache libffi-dev libssl-dev dfu-util •Arch: sudo pacman -S --needed gcc git make flex bison gperf python-pip cmake ninja ccache dfu-util Note: •This guide uses the directory~/esp on Linux as an installation folder for ESP-IDF. •Keep in mind that ESP-IDF does not support spaces in paths. 2.3.2Get ESP­IDF To build applications for EK058 module, you need the software libraries provided by Espressif inESP-IDFrepository. To get ESP-IDF, create an installation directory (~/esp) to download ESP-IDF to and clone the repository with ‘git clone’: mkdir -p ~/esp cd ~/esp git clone --recursive https://github.com/espressif/esp-idf.git ESP-IDF will be downloaded into~/esp/esp-idf. ConsultESP-IDFVersionsfor information about which ESP-IDF version to use in a given situation. Espressif Systems6EK058 User Manual v0.5 2 Get Started on EK058 2.3.3Set up Tools Aside from the ESP-IDF, you also need to install the tools used by ESP-IDF, such as the compiler, debugger, Python packages, etc. ESP-IDF provides a script named ‘install.sh’ to help set up the tools in one go. cd ~/esp/esp-idf ./install.sh 2.3.4Set up Environment Variables The installed tools are not yet added to the PATH environment variable. To make the tools usable from the command line, some environment variables must be set. ESP-IDF provides another script ‘export.sh’ which does that. In the terminal where you are going to use ESP-IDF, run: . $HOME/esp/esp-idf/export.sh Now everything…

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ESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD Date:September26,2022 FederalCommunicationsCommission OfficeofEngineeringandTechnologyLaboratoryDivision 7435OaklandMillsRd ColumbiaMD21046-1609 Subject:RequestforConfidentiality FCCID:2AC7Z-EK058 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission’srules (47CFR§§0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosureindefinitely. SchematicDiagram  BlockDiagram PartList OperationalDescription  Tune-upProcedure Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Inadditionaltoabovementioneddocuments,pursuanttoPublicNoticeDA04-1705of theCommission’spolicy,inordertocomplywiththemarketingregulationsin47CFT §2.803andtheimportationrulesin47CFR§2.1204,whileensuringthatbusiness sensitiveinformationremainsconfidentialuntiltheactualmarketingofnewlyauthorized devices.Wearerequestingthecommissiontograntshort-termconfidentialityrequest onthefollowingattachment(s)for180daysafterthegrantasoutlinedinPublicNotice DA04-1705. ExternalPhotos InternalPhotos TestSetupPhotos UserManual Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. BestRegards, ______________________ ContactPerson:MiaZhou E-mail:[email protected]

Applicant/GranteeESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD/2AC7Z FCCID:2AC7Z-EK058 Section15.212ModularTransmitters RequestforModularApprovalRequestforLimitedModularApproval RequirementsEUTConditionsComply(Y/N) SingleModularApprovalRequirements 1Theradioelementsofthemodular transmittermusthavetheirown shielding.Thephysicalcrystaland tuningcapacitorsmaybelocated externaltotheshieldedradioelements. Theradioportionofthismoduleis shielded,pleaseseeexhibitionexternal photos. Y 2Themodulartransmittermusthave bufferedmodulation/datainputs(ifsuch inputsareprovided)toensurethatthe modulewillcomplywithPart15 requirementsunderconditionsof excessivedataratesorover-modulation. Themodulehasbuffermodulation/data inputs. Y 3Themodulartransmittermusthaveits ownpowersupplyregulation. Themodulehasitsownpowersupply regulation.Pleaseseetheschem.pdf Y 4Themodulartransmittermustcomply withtheantennaandtransmission systemrequirementsofSections15.203, 15.204(b)and15.204(c).Theantenna musteitherbepermanentlyattachedor employa“unique”antennacoupler(at allconnectionsbetweenthemoduleand theantenna,includingthecable).The “professionalinstallation”provisionof Section15.203isnotapplicableto modulesbutcanapplytolimited modularapprovalsunderparagraph(b) ofthissection. Therequirementsofantennaconnector andspuriousemissionhavebeen fulfilled.PleaserefertotheTestReport exhibition. Y 5Themodulartransmittermustbetested inastand-aloneconfiguration,i.e.,the modulemustnotbeinsideanother deviceduringtestingforcompliance withPart15requirements.Unlessthe transmittermodulewillbebattery powered,itmustcomplywiththeAC lineconductedrequirementsfoundin Section15.207.ACorDCpowerlines anddatainput/outputlinesconnectedto themodulemustnotcontainferrites, unlesstheywillbemarketedwiththe module(seeSection15.27(a)).The lengthoftheselinesshallbethelength typicalofactualuseor,ifthatlengthis unknown,atleast10centimetersto insurethatthereisnocouplingbetween thecaseofthemoduleandsupporting PleaserefertotheSetupPhoto exhibitionforthestand-alonetest configuration. Y equipment.Anyaccessories,peripherals, orsupportequipmentconnectedtothe moduleduringtestingshallbe unmodifiedandcommerciallyavailable (seeSection15.31(i)). 6Themodulartransmittermustbe equippedwitheitherapermanently affixedlabelormustbecapableof electronicallydisplayingitsFCC identificationnumber. (A)Ifusingapermanentlyaffixedlabel,the modulartransmittermustbelabeledwithitsown FCCidentificationnumber,and,iftheFCC identificationnumberisnotvisiblewhenthe moduleisinstalledinsideanotherdevice,then theoutsideofthedeviceintowhichthemoduleis installedmustalsodisplayalabelreferringto theenclosedmodule.Thisexteriorlabelcanuse wordingsuchasthefollowing:“Contains TransmitterModule FCCID:XYZMODEL1”or“ContainsFCCID: XYZMODEL1.”Anysimilarwording thatexpressesthesamemeaningmaybeused. TheGranteemayeitherprovidesuchalabel,an exampleofwhichmustbeincludedinthe applicationforequipment authorization,or,mustprovideadequate instructionsalongwiththemodulewhichexplain thisrequirement.Inthelattercase,acopyof theseinstructionsmustbeincludedinthe applicationforequipmentauthorization. (B)Ifthemodulartransmitterusesanelectronic displayoftheFCCidentificationnumber,the informationmustbereadilyaccessibleand visibleonthemodulartransmitteroronthe deviceinwhichitisinstalled.Ifthemoduleis installedinsideanotherdevice,thentheoutside ofthedeviceintowhichthemoduleisinstalled mustdisplayalabelreferringtotheenclosed module.Thisexteriorlabelcanusewordingsuch asthefollowing: “ContainsFCCcertifiedtransmittermodule(s).” Anysimilarwordingthatexpressesthesame meaningmaybeused.Theusermanualmust includeinstructionsonhowtoaccessthe electronicdisplay.Acopyoftheseinstructions mustbeincludedintheapplicationfor equipmentauthorization. TheModulewillbelabeledwithitsown FCCID,andtheinstructiononthe labelingruleoftheendproducthasbeen statedintheUserManualofthis module.PleaserefertotheLabeland UserManualexhibition. Y 7Themodulartransmittermustcomply withanyspecificrulesoroperating requirementsthat ordinarilyapplytoacomplete transmitterandthemanufacturermust provideadequateinstructionsalongwith themoduletoexplainanysuch requirements.Acopyofthese instructionsmustbeincludedinthe applicationforequipmentauthorization. TherequiredFCCrulehasbeenfulfilled andalltheinstructionsformaintaining compliancehavebeenclearlystatedin theUserManual. Y 8Themodulartransmittermustcomply withanyapplicableRFexposure requirementsinitsfinalconfiguration. PleasereferexhibitionRFExposurefor thecomplianceofMPERFexposure rule. Y _________________________________ ContactPerson:MiaZhou E-mail:[email protected]

Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 1 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 720510 1. External Photograph of EUT Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 2 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 3 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 4 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 5 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 6 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058

乐鑫信息科技（上海） 股份有限公司 EK058 MX8PS2 MN 12259561 CMIIT ID : FCC ID:2AC7Z-EK058 IC:21098-EK058

Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 7 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 720510 2. Internal Photograph of EUT Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 8 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 9 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 Photographs of EUT Report No.: EP263001A Brand Name: ESPRESSIF / Model Name: EK058 Sporton International Inc. (Kunshan) Page Number : 10 of 10 TEL : +86-512-57900158 Report Issued Date : Sep. 08, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID : 2AC7Z-EK058 Bluetooth & WLAN Antenna

Sporton International Inc. (Kunshan) Page Number : 1 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Sep. 23, 2022 FCC ID : 2AC7Z-EK058 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA263001 RF Exposure Evaluation Report APPLICANT : Espressif Systems (Shanghai) Co.,Ltd. EQUIPMENT : 2.4G Wi-Fi & Bluetooth IoT Module BRAND NAME : ESPRESSIF MODEL NAME : EK058 FCC ID : 2AC7Z-EK058 STANDARD : 47 CFR Part 2.1091 The product evaluation date was started from Aug. 23, 2022 and completed on Aug. 23, 2022. We, Sporton International Inc. (Kunshan), would like to declare that the device has been evaluated in accordance with 47 CFR Part2.1091, and pass the limit. Without written approval of Sporton International Inc. (Kunshan), the test report shall not be reproduced except in full. Approved by: Si Zhang Sporton International Inc. (Kunshan) No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China Sporton International Inc. (Kunshan) Page Number : 2 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Sep. 23, 2022 FCC ID : 2AC7Z-EK058 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA263001 Table of Contents 1. ADMINISTRATION DATA ........................................................................................................................... 4 1.1. Testing Laboratory ............................................................................................................................. 4 2. GUIDANCE APPLIED ................................................................................................................................. 4 3. DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) ............................................................................. 5 4. MAXIMUM RF AVERAGE OUTPUT TUNE UP POWER AMONG PRODUCTION UNITS ....................... 6 5. RF EXPOSURE LIMIT INTRODUCTION .................................................................................................... 7 6. RADIO FREQUENCY RADIATION EXPOSURE EVALUATION ............................................................... 9 6.1. Standalone assessment .................................................................................................................... 9 Sporton International Inc. (Kunshan) Page Number : 3 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Sep. 23, 2022 FCC ID : 2AC7Z-EK058 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA263001 Revision History REPORT NO. VERSION DESCRIPTION ISSUED DATE FA263001 Rev. 01 Initial issue of report. Sep. 23, 2022 Sporton International Inc. (Kunshan) Page Number : 4 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Sep. 23, 2022 FCC ID : 2AC7Z-EK058 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA263001 1. Administration Data 1.1. Testing Laboratory Sporton International Inc. (Kunshan) is accredited to ISO/IEC 17025:2017 by American Association for Laboratory Accreditation with Certificate Number 5145.02. Testing Laboratory Test Firm Sporton International Inc. (Kunshan) Test Site Location No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China TEL : +86-512-57900158 FAX : +86-512-57900958 Test Site No. Sporton Site No. FCC Designation No. FCC Test Firm Registration No. SAR01-KS CN1257 314309 Applicant Company Name Espressif Systems (Shanghai) Co.,Ltd. Address Suite 204, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China Manufacturer Company Name Espressif Systems (Shanghai) Co.,Ltd. Address Suite 204, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China 2. Guidance Applied According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards: ‧ FCC 47 CFR Part 2.1091 ‧ KDB 447498 D04 Interim General RF Exposure Guidance v01 ‧ FCC 47 CFR Part 1.1307 Sporton International Inc. (Kunshan) Page Number : 5 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Sep. 23, 2022 FCC ID : 2AC7Z-EK058 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA263001 3. Description of Equipment Under Test (EUT) Product Feature & Specification EUT Type 2.4G WI-FI & Bluetooth IoT Module Brand Name ESPRESSIF Model Name EK058 FCC ID 2AC7Z-EK058 Wireless Technology and Frequency Range WLAN 2.4GHz Band: 2412 MHz ~ 2462 MHz Bluetooth: 2402 MHz ~ 2480 MHz Mode WLAN 2.4GHz 802.11b/g/n HT20/HT40 Bluetooth BR/EDR/LE Antenna Gain WLAN2.4GHz/Bluetooth: 3.26 dBi Antenna Type WLAN/Bluetooth: PCB Antenna HW Version V1.1 SW Version V1.1.3.0 EUT Stage Production Unit Remark: The above EUT's information was declared by manufacturer. Please refer to the specifications or user's manual for more detailed description. Comments and Explanations: 1. The declared of product specification for EUT presented in the report are provided by the manufacturer, and the manufacturer takes all the responsibilities for the accuracy of product specification. 2. The maximum RF output tune up power, antenna gain also the safe distance used for evaluate RF exposure were declared by manufacturer. Sporton International Inc. (Kunshan) Page Number : 6 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Sep. 23, 2022 FCC ID : 2AC7Z-EK058 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA263001 4. Maximum RF average output tune up power among production units <2.4GHz WLAN > Mode Maximum Average Power (dBm) 2.4GHz 802.11b 19.00 802.11g 17.00 802.11n-HT20 17.00 802.11n-HT40 17.00 <Bluetooth> Mode Maximum Average Power (dBm) Bluetooth BR/EDR 10.0 Bluetooth LE 10.0 Sporton International Inc. (Kunshan) Page Number : 7 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Sep. 23, 2022 FCC ID : 2AC7Z-EK058 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA263…

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OTA TEST REPORT TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in ANSI/IEEE Std 149-2008. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Prepared by: Peng Tao Approved by: Kai Xu TA Technology (Shanghai) Co., Ltd. No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai, China TEL: +86‐021‐50791141/2/3 FAX: +86‐021‐50791141/2/3‐8000 Applicant Espressif System (Shanghai) Co.,Ltd Product ESP32-C3-WROOM-02 Model ESP-ANT B Report No. Y2102A0260-T3 Issue Date March 9, 2021 OTA Test Report Report No: Y2102A0260-T3 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 2 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. TABLE OF CONTENTS 1. Test Laboratory .............................................................................................................................. 3 1.1. Notes of the Test Report ................................................................................................... 3 1.2. Test facility ........................................................................................................................ 3 1.3. Testing Location ................................................................................................................ 3 1.4. Laboratory Environment .................................................................................................... 4 2. General Description of Equipment under Test ............................................................................... 5 2.1. Applicant and Manufacturer Information ............................................................................ 5 2.2. General information ........................................................................................................... 5 2.3. Test Date ........................................................................................................................... 5 2.4. Receiving Date .................................................................................................................. 5 2.5. Applied Standards ............................................................................................................. 6 3. Test Conditions .............................................................................................................................. 7 3.1. Test Configuration ............................................................................................................. 7 3.2. Test Measurement ............................................................................................................. 7 4. Test Results ................................................................................................................................... 8 4.1. Gain and Efficiency ............................................................................................................ 8 5. Equipment List ............................................................................................................................... 9 ANNEX A 3-D Pattern Plots ................................................................................................................... 10 ANNEX B：The EUT Appearance and Test Configuration ...................................................................... 12 B.1 EUT Appearance ................................................................................................................... 12 B.2 Test Configuration ................................................................................................................. 13 OTA Test Report Report No: Y2102A0260-T3 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 3 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 1. Test Laboratory 1.1. Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of TA technology (shanghai) co., Ltd. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein .Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. 1.2. Test facility A2LA (Certificate Number: 3857.01) TA Technology (Shanghai) Co., Ltd. has been listed by American Association for Laboratory Accreditation to perform measurement. 1.3. Testing Location Company: TA Technology (Shanghai) Co., Ltd. Address: No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai, China City: Shanghai Post code: 201201 Country: P. R. China Contact: Xu Kai Telephone: +86-021-50791141/2/3 Fax: +86-021-50791141/2/3-8000 Website: http://www.ta-shanghai.com E-mail: [email protected] OTA Test Report Report No: Y2102A0260-T3 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 4 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 1.4. Laboratory Environment Temperature Min. =19°C，Max. = 25°C Relative humidity Min. =40%，Max. =72% Shield effect 0.7-6GHz > 100dB Ground resistance <0.5 OTA Test Report Report No: Y2102A0260-T3 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 5 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 2. General Description of Equipment under Test 2.1. Applicant and Manufacturer Information Applicant Name Espressif System (Shanghai) Co.,Ltd Applicant address Suite 204 Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China Manufacturer Name Espressif System (Shanghai) Co.,Ltd Manufacturer address Suite 204 Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China 2.2. …

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Sporton International Inc. (Kunshan) Page Number : 1 of 58 TEL : +86-512-57900158 Report Issued Date : Sep. 09, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID: 2AC7Z-EK058 Report Template No.: BU5-FR15CBT Version 2.0 FCC RF Test Report Report No. : FR263001A FCC RF Test Report APPLICANT : Espressif Systems (Shanghai) Co.,Ltd. EQUIPMENT : 2.4G Wi-Fi & Bluetooth IoT Module BRAND NAME : ESPRESSIF MODEL NAME : EK058 FCC ID : 2AC7Z-EK058 STANDARD : FCC Part 15 Subpart C §15.247 CLASSIFICATION : (DSS) Spread Spectrum Transmitter TEST DATE(S) : Jul. 26, 2022 ~ Aug. 08, 2022 We, Sporton International Inc. (Kunshan), would like to declare that the tested sample has been evaluated in accordance with the test procedures and has been in compliance with the applicable technical standards. The test results in this report apply exclusively to the tested model / sample. Without written approval of Sporton International Inc. (Kunshan), the test report shall not be reproduced except in full. Approved by: Jason Jia Sporton International Inc. (Kunshan) No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China Sporton International Inc. (Kunshan) Page Number : 2 of 58 TEL : +86-512-57900158 Report Issued Date : Sep. 09, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID: 2AC7Z-EK058 Report Template No.: BU5-FR15CBT Version 2.0 FCC RF Test Report Report No. : FR263001A TABLE OF CONTENTS REVISION HISTORY .......................................................................................................................................... 3 SUMMARY OF TEST RESULT ......................................................................................................................... 4 1 GENERAL DESCRIPTION .......................................................................................................................... 5 1.1 Applicant ............................................................................................................................................ 5 1.2 Manufacturer ...................................................................................................................................... 5 1.3 Product Feature of Equipment Under Test ........................................................................................ 5 1.4 Product Specification of Equipment Under Test ................................................................................ 5 1.5 Modification of EUT ........................................................................................................................... 6 1.6 Testing Location ................................................................................................................................ 6 1.7 Test Software ...........................................................…

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