2AC7Z-ESPS2MINI2U2.4GHz Wi-Fi loT Module

ESP32-S2-MINI-2U User Manual 2.4 GHz Wi-Fi (802.11 b/g/n) module Built around ESP32-S2 series of SoC (chip revision v1.0), Xtensa ® single-core 32-bit LX7 mi- croprocessor 4 MB flash and optional 2 MB PSRAM in chip package 37 GPIOs, rich set of peripherals External antenna connector ESP32-S2-MINI-2U Pre-release v0.5 Espressif Systems Copyright © 2022 www.espressif.com 1 Module Overview 1Module Overview ESP32-S2-MINI-2U is a general-purpose Wi-Fi module. The rich set of peripherals and a small size make this module an ideal choice for smart homes, industrial automation, health care, consumer electronics, etc. Table 1: ESP32-S2-MINI-2U Specifications CategoriesParametersSpecifications Wi-Fi Protocols802.11 b/g/n (up to 150 Mbps) Frequency range2412~2462 MHz Hardware Module interfaces GPIO, SPI, I2S, UART, I2C, LED PWM, TWAI ® , LCD, Camera interface, ADC, DAC, touch sensor, temper- ature sensor, USB OTG Integrated crystal40 MHz crystal Operating voltage/Power supply3.0 V~3.6 V Operating currentAverage: 80 mA Minimum current delivered by power supply 500 mA Ambient temperature–40 °C~+85 °C/105 °C Moisture sensitivity level (MSL)Level 3 Espressif Systems2ESP32-S2-MINI-2U User Manual v0.5 Contents Contents 1 Module Overview2 2 Pin Definitions4 2.1 Pin Layout4 2.2 Pin Description4 3 Get Started7 3.1 What You Need7 3.2 Hardware Connection7 3.3 Set up Development Environment8 3.3.1 Install Prerequisites8 3.3.2 Get ESP-IDF8 3.3.3 Set up Tools9 3.3.4 Set up Environment Variables9 3.4 Create Your First Project9 3.4.1 Start a Project9 3.4.2 Connect Your Device9 3.4.3 Configure10 3.4.4 Build the Project10 3.4.5 Flash onto the Device11 3.4.6 Monitor12 4 U.S. FCC Statement14 5 Related Documentation and Resources18 Revision History19 Espressif Systems3ESP32-S2-MINI-2U User Manual v0.5 2 Pin Definitions 2Pin Definitions 2.1Pin Layout The pin diagram below shows the approximate location of pins on the module. Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 GND GND 3V3 IO0 IO1 IO2 IO3 IO4 IO5 IO6 IO7 IO8 IO9 IO10 IO11 Pin 63 GND IO12 Pin 16Pin 17Pin 18Pin 19Pin 20 Pin 21 Pin 22 Pin 23Pin 24Pin 25Pin 26Pin 27Pin 28Pin 29Pin 30 Pin 64 GND Pin 31 IO13 IO14 IO15 IO16IO17IO18IO19 IO20 IO21 IO26 NC IO33 IO34 GND Pin 32 Pin 33 Pin 34 Pin 35 Pin 36 Pin 37 Pin 38 Pin 39 Pin 40 Pin 41 Pin 42 Pin 43 Pin 44 Pin 45 Pin 65 GND Pin 62 GND Pin 46Pin 47Pin 48Pin 49Pin 50 Pin 51 Pin 52 Pin 53Pin 54Pin 55Pin 56Pin 57Pin 58Pin 59Pin 60 Pin 61 GND GNDGNDGND GNDGND GNDGNDGND IO35 IO36 IO37 IO38 IO39 IO40 IO41 IO42 TXD0 RXD0 IO45 GND GND IO46 EN GNDGNDGND GNDGND GNDGNDGNDGNDGNDGNDGNDGNDGNDGND Keepout Zone Figure 1: Pin Layout (Top View) 2.2Pin Description The module has 65 pins. See pin definitions in Table2. For peripheral pin configurations, please refer toESP32-S2 Series Datasheet. Table 2: Pin Definitions NameNo.Type 1 Function GND 1, 2, 30, 42, 43, 46-65 PGround 3V33PPower supply Cont’d on next page Espressif Systems4ESP32-S2-MINI-2U User Manual v0.5 2 Pin Definitions Table 2 – cont’d from previous page NameNo.Type 1 Function IO04I/O/TRTC_GPIO0, GPIO0 IO15I/O/TRTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0 IO26I/O/TRTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1 IO37I/O/TRTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2 IO48I/O/TRTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3 IO59I/O/TRTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4 IO610I/O/TRTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5 IO711I/O/TRTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6 IO812I/O/TRTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7 IO913I/O/TRTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD IO1014I/O/TRTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 IO1115I/O/TRTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 IO1216I/O/TRTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 IO1317I/O/TRTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 IO1418I/O/TRTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS IO1519I/O/TRTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P IO1620I/O/TRTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N IO1721I/O/TRTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1 IO1822I/O/TRTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3 IO1923I/O/TRTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D- IO2024I/O/TRTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+ IO2125I/O/TRTC_GPIO21, GPIO21 IO26 2 26I/O/TSPICS1, GPIO26 NC27—NC IO3328I/O/TSPIIO4, GPIO33, FSPIHD IO3429I/O/TSPIIO5, GPIO34, FSPICS0 IO3531I/O/TSPIIO6, GPIO35, FSPID IO3632I/O/TSPIIO7, GPIO36, FSPICLK IO3733I/O/TSPIDQS, GPIO37, FSPIQ IO3834I/O/TGPIO38, FSPIWP IO3935I/O/TMTCK, GPIO39, CLK_OUT3 IO4036I/O/TMTDO, GPIO40, CLK_OUT2 IO4137I/O/TMTDI, GPIO41, CLK_OUT1 IO4238I/O/TMTMS, GPIO42 TXD039I/O/TU0TXD, GPIO43, CLK_OUT1 RXD040I/O/TU0RXD, GPIO44, CLK_OUT2 IO4541I/O/TGPIO45 IO4644IGPIO46 EN45I High: on, enables the chip. Low: off, the chip powers off. Note: Do not leave the EN pin floating. Espressif Systems5ESP32-S2-MINI-2U User Manual v0.5 2 Pin Definitions 1 P: power supply; I: input; O: output; T: high impedance. 2 IO26 is used by the embedded PSRAM on the ESP32-S2-MINI-2U-N4R2 module, and cannot be used for other purposes. Espressif Systems6ESP32-S2-MINI-2U User Manual v0.5 3 Get Started 3Get Started 3.1What You Need To develop applications for module you need: •1 x ESP32-S2-MINI-2U •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. 3.2Hardware Connection 1.Solder the ESP32-S2-MINI-2U module to the RF testing board as shown in Figure2. Figure 2: 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 deta…

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(Insertcompanyletter head) FederalCommunicationsCommission 7435 OaklandMills Road ColumbiaMD 21046 Subject:Certificationdesignatinga U.S.agentforserviceof processpursuantto Part2.911(d)(7) To whomit may concern, ESPRESSIFSYSTEMS(SHANGHAI)CO., LTD , 2AC7Z(“the applicant”) certifiesthat, as of the date of the filing of application,[Grid Connect,Inc.] (“the agent ”) is designatedas the U.S. agent for the purposeof acceptingserviceof processon behalfof the applicant. The physicalU.S. addressand email for the designatedagent are: PhysicalU.S. address: [1630 W. Diehl Road,Naperville,IL 60563 ] Em ail: [[email protected]] The applicantacceptsto maintainan agent for serviceof processin the UnitedStatesfor no less than one year after either the granteehas permanentlyterminatedall marketingand importationof the applicableequipment within the U.S., or the conclusionof any Commission-relatedadministrativeor judicialproceedinginvolvingthe equipment,whicheveris later. The agent acceptsthe designationby (the applicant)as the U.S. agent to acceptserviceof processincludes, but is not limitedto, deliveryof any correspondence,notices,orders,decisions,and requirementsof administrative,legal, or judicialprocessrelatedto Commissionproceedings. Signedby the Applicant （FRN: 0023938848） Signedby the Agent (if differentfrom the Applicant) （FRN: 0024737660） Name:Mia ZhouName:M.B. Justice Title : CertificationManagerTitle : President Email : [email protected] : [email protected] Date: July 20, 2023Date: July 20, 2023

ESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD FederalCommunicationsCommission 7435OaklandMillsRoad ColumbiaMD21046 Date:July21,2023 Subject:Certificationsconcerning“covered”equipmentpursuanttoPart2.911(d)(5)(i)and(ii) Towhomitmayconcern, ESPRESSIFSYSTEMS(SHANGHAI)CO.,LTDcertifiesthattheequipmentFCCID:2AC7Z-ESPS2MINI2U forwhichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. ESPRESSIFSYSTEMS(SHANGHAI)CO.,LTDcertifiesthat,asofthedateofthefilingoftheapplication,the applicantisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyofitssubsidiariesor affiliates)asanentityproducing“covered”equipment. Sincerely, ________________________ Name:MiaZhou E-mail:[email protected]

ESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD Date:July21,2023 FederalCommunicationsCommission OfficeofEngineeringandTechnologyLaboratoryDivision 7435OaklandMillsRd ColumbiaMD21046-1609 Subject:RequestforConfidentiality FCCID:2AC7Z-ESPS2MINI2U 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]

ESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD Date:July21,2023 PowerofAttorney Towhomitmayconcern, PleasebenotifiedthatI,MiaZhou,havedesignatedJimTsaiinSportonInternationalInc.asthe personbeingresponsibleforthisprojectandtosigntheform731andotherdocumentation. AnyandallactscarriedoutbyJimTsaiinSportonInternationalInc.,onthemattersofrelatingto allprocessesrequiredintheFCCapprovalandanycommunicationneededwiththenational authority,shallhavethesamelegalauthorityasactsonourownbehalf. Wefurthercertifiesthatneithertheapplicantnoranypartytothisapplication,asdefinedin47CFR Ch.1.2002(b),issubjecttoadenialtoFederalbenefits,thatincludeFCCbenefits,pursuantto section5301oftheAnti-DrugAbuseActof1998,21U.S.C.835(a). Thisauthorizationislimitedtotheproductofasfollowing: FCCID:2AC7Z-ESPS2MINI2U Ifyouhaveanyacknowledgementandresponse,pleasesendittoSportonInternationalInc. directly. Shouldyouhaveanyquestionsorcommentsregardingthismatter,pleasehavemybestattention. Sincerelyyours, ContactPerson:MiaZhou E-mail:[email protected]

Applicant/GranteeESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD/2AC7Z FCCID:2AC7Z-ESPS2MINI2U 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.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 1 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 720510 1. External Photograph of EUT Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 2 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 3 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 4 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 5 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 6 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 7 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 720510 2. Photograph of Accessory WLAN & Bluetooth Antenna

ESP32-S2-MINI-2U 乐鑫信息科技（上海） 股份有限公司 xxxxxx CMIIT ID : FCC ID2AC7Z-ESPS2MINI2U

Label location: It’s on the shield

Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 8 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 3. Internal Photograph of EUT Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 9 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Photographs of EUT Report No.: EP262716 Brand Name: ESPRESSIF; Model Name: ESP32-S2-MINI-2U Sporton International Inc. (Kunshan) Page Number : 10 of 10 TEL : 86-0512-5790-0158 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01

Sporton International Inc. (Kunshan) Page Number : 1 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA262716 RF Exposure Evaluation Report APPLICANT : Espressif Systems (Shanghai) Co.,Ltd. EQUIPMENT : 2.4GHz Wi-Fi loT Module BRAND NAME : ESPRESSIF MODEL NAME : ESP32-S2-MINI-2U FCC ID : 2AC7Z-ESPS2MINI2U STANDARD : 47 CFR Part 2.1091 The product evaluation date was started from Mar. 27, 2023 and completed on Mar. 27, 2023. We, Sporton International Inc. (Kunshan), would like to declare that the device has been evaluated in accordance with 47 CFR Part 2.1091 and FCC KDB 447498 D01 v06, 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 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA262716 Table of Contents 1. ADMINISTRATION DATA ........................................................................................................................... 4 1.1. Testing Laboratory ............................................................................................................................. 4 2. DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) ............................................................................. 5 3. MAXIMUM RF AVERAGE OUTPUT TUNE UP POWER AMONG PRODUCTION UNITS ....................... 6 4. RF EXPOSURE LIMIT INTRODUCTION .................................................................................................... 7 5. RADIO FREQUENCY RADIATION EXPOSURE EVALUATION ............................................................... 8 5.1. Standalone Power Density Calculation ............................................................................................. 8 Sporton International Inc. (Kunshan) Page Number : 3 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA262716 Revision History REPORT NO. VERSION DESCRIPTION ISSUED DATE FA262716 Rev. 01 Initial issue of report. Jul. 06, 2023 Sporton International Inc. (Kunshan) Page Number : 4 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA262716 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 Sporton International Inc. (Kunshan) Page Number : 5 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA262716 2. Description of Equipment Under Test (EUT) Product Feature & Specification EUT Type 2.4GHz Wi-Fi loT Module Brand Name ESPRESSIF Model Name ESP32-S2-MINI-2U FCC ID 2AC7Z-ESPS2MINI2U Wireless Technology and Frequency Range WLAN 2.4GHz Band: 2412 MHz ~ 2462 MHz Mode WLAN 2.4GHz 802.11b/g/n HT20/HT40 Antenna Gain WLAN2.4GHz: 2.33 dBi Antenna Type WLAN: External Antenna HW Version V1.0 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 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA262716 3. 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 18.00 802.11n-HT20 18.00 802.11n-HT40 15.00 Sporton International Inc. (Kunshan) Page Number : 7 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 06, 2023 FCC ID : 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA262716 4. RF Exposure Limit Introduction According to ANSI/IEEE C95.1-1992, the criteria listed in Table 1 shall be used to evaluate the environmental impact of human exposure to radio frequency (RF) radiation as specified in §1.1310. The MPE was calculated at 20 cm to show compliance with the power density limit. The following formula was used to calculate the Power Density: 퐒= 퐏퐆 ퟒ훑퐑 ퟐ Where: S = Power Density P = Output Power at Antenna Terminals G = Gain of Transmit Antenn…

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Sporton International Inc. (Kunshan) Page Number : 1 of 38 TEL : +86-512-57900158 Report Issued Date : Jul. 06, 2023 FCC ID: 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Report Template No.: BU5-FR15CWL AC MA Version 2.0 FCC RF Test Report Report No. : FR262716 FCC RF Test Report APPLICANT : Espressif Systems (Shanghai) Co.,Ltd. EQUIPMENT : 2.4GHz Wi-Fi loT Module BRAND NAME : ESPRESSIF MODEL NAME : ESP32-S2-MINI-2U FCC ID : 2AC7Z-ESPS2MINI2U STANDARD : FCC Part 15 Subpart C §15.247 CLASSIFICATION : (DTS) Digital Transmission System TEST DATE(S) : Feb. 27, 2023 ~ Mar. 20, 2023 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 38 TEL : +86-512-57900158 Report Issued Date : Jul. 06, 2023 FCC ID: 2AC7Z-ESPS2MINI2U Report Version : Rev. 01 Report Template No.: BU5-FR15CWL AC MA Version 2.0 FCC RF Test Report Report No. : FR262716 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 ........................................................................................................................... 5 1.6 Testing Location ................................................................................................................................ 6 1.7 Test Software ..................................................................................................................................... 6 1.8 Applicable Standards ......................................................................................................................... 6 2 TEST CONFIGURATION OF EQUIPMENT UNDER TEST ........................................................................ 7 2.1 Carrier Frequency and Channel ........................................................................................................ 7 2.2 Test Mode .......................................................................................................................................... 7 2.3 Connection Diagram of Test System ................................................................................................. 8 2.4 Support Unit used in test configuration and system .......................................................................... 8 2.5 EUT Operation Test Setup ................................................................................................................ 9 2.6 Measurement Results Explanation Example ..................................................................................... 9 3 TEST RESULT ........................................................................................................................................... 10 3.1 6dB Bandwidth Measurement ......................................................................................................... 10 3.2 Output Power Measurement ............................................................................................................ 12 3.3 Power Spectral Density Measurement ............................................................................................ 13 3.4 Conducted Band Edges and Spurious Emission Measurement ..................................................... 15 3.5 Radiated Band Edges and Spurious Emission Measurement ........................................................ 30 3.6 AC Conducted Emission Measurement........................................................................................... 34 3.7 Antenna Requirements .................................................................................................................... 36 4 LIST OF MEASURING EQUIPMENT ........................................................................................................ 37 5 UNCERTAINTY OF EVALUATION ........................................................................................................... 38 APPENDIX A. CONDUCTED TEST RESULTS APPENDIX B. AC CONDUCTED EMISSION TEST RESULT APPENDIX C. RADIATED SPURIOUS EMISSION APPENDIX D. DUTY CYCLE PLOTS …

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