2AC7Z-ESP8685072.4GHz Wi-Fi & BT IoT Module

ESP8685-WROOM-07 Datasheet 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth ® 5 module Built around ESP8685 series of SoC, RISC-V single-core microprocessor 2 MB or 4 MB flash in chip package 3 GPIOs Solder pad for external monopole antenna ESP8685-WROOM-07 Pre-release v0.5 Espressif Systems Copyright © 2022 www.espressif.com 1 Module Overview 1Module Overview Note: Check the link or the QR code to make sure that you use the latest version of this document: https://espressif.com/sites/default/files/documentation/esp8685-wroom-07_datasheet_en.pdf 1.1Features CPU and On-Chip Memory •ESP8685H2 or ESP8685H4 embedded, 32-bit RISC-V single-core processor, up to 160 MHz •384 KB ROM •400 KB SRAM (16 KB for cache) •8 KB SRAM in RTC •2 MB or 4 MB flash in chip package Wi-Fi •IEEE 802.11 b/g/n-compliant •Supports 20 MHz, 40 MHz bandwidth in 2.4 GHz band •1T1R mode with data rate up to 150 Mbps •Wi-Fi Multimedia (WMM) •TX/RX A-MPDU, TX/RX A-MSDU •Immediate Block ACK •Fragmentation and defragmentation •Transmit opportunity (TXOP) •Automatic Beacon monitoring (hardware TSF) •4 × virtual Wi-Fi interfaces •Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode Note that when ESP8685 series scans in Station mode, the SoftAP channel will change along with the Station channel •802.11mc FTM •Operating frequency: 2412~2462 MHz Bluetooth ® •Bluetooth LE: Bluetooth 5, Bluetooth mesh •Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps •Advertising extensions •Multiple advertisement sets •Channel selection algorithm #2 Peripherals •GPIO, SPI, UART, I2C, I2S, remote control peripheral, LED PWM controller, general DMA controller, TWAI ® controller (compatible with ISO 11898-1, i.e. CAN Specification 2.0), USB Serial/JTAG controller, temperature sensor, SAR ADC, general-purpose timers, watchdog timers Integrated Components on Module •40 MHz crystal oscillator Antenna Options •Solder pad for external monopole antenna Operating Conditions •Operating voltage/Power supply: 3.0~3.6 V •Operating ambient temperature: –40~105 °C Espressif Systems2 Submit Documentation Feedback ESP8685-WROOM-07 Datasheet v0.5 1 Module Overview 1.2Description ESP8685-WROOM-07 is a powerful, generic Wi-Fi and Bluetooth LE module. This module is an ideal choice for smart homes, industrial automation, health care, consumer electronics, etc. ESP8685-WROOM-07 can be vertically soldered to a PCB board via wave soldering. The module has 3 available GPIOs. ESP8685-WROOM-07 can be connected to an external monopole antenna via soldering. The ordering information for ESP8685-WROOM-07 is as follows: Table 1: ESP8685-WROOM-07 Ordering Information ModuleOrdering codeChip EmbeddedModule Dimensions (mm) ESP8685-WROOM-07 ESP8685-WROOM-07-H2ESP8685H2 8.5 × 12.7 × 2.6 ESP8685-WROOM-07-H4ESP8685H4 The ESP8685H2 chip and the ESP8685H4 chip fall into the same category, namely ESP8685 chip series. ESP8685 series of chips have a 32-bit RISC-V single-core processor. They integrate a rich set of peripherals, ranging from UART, I2C, I2S, remote control peripheral, LED PWM controller, general DMA controller, TWAI ® controller, USB Serial/JTAG controller, temperature sensor, and ADC. The ESP8685H2 chip and the ESP8685H4 chip vary only in the size of the flash in chip package. For details, please refer to ESP8685 Series Comparison in ESP8685 Datasheet. 1.3Applications •Smart Home –Light control –Smart button –Smart plug –Indoor positioning •Industrial Automation –Industrial robot –Mesh network –Human machine interface (HMI) –Industrial field bus •Health Care –Health monitor –Baby monitor •Consumer Electronics –Smart watch and bracelet –Over-the-top (OTT) devices –Wi-Fi speaker –Logger toys and proximity sensing toys •Smart Agriculture –Smart greenhouse –Smart irrigation –Agriculture robot •Retail and Catering –POS machines –Service robot •Audio Device –Internet music players –Live streaming devices –Internet radio players •Generic Low-power IoT Sensor Hubs Espressif Systems3 Submit Documentation Feedback ESP8685-WROOM-07 Datasheet v0.5 1 Module Overview •Generic Low-power IoT Data Loggers Espressif Systems4 Submit Documentation Feedback ESP8685-WROOM-07 Datasheet v0.5 Contents Contents 1 Module Overview2 1.1 Features2 1.2 Description3 1.3 Applications3 2 Block Diagram8 3 Pin Definitions9 3.1 Pin Layout9 3.2 Pin Description9 3.3 Strapping Pins10 4 Electrical Characteristics12 4.1 Absolute Maximum Ratings12 4.2 Recommended Operating Conditions12 4.3 DC Characteristics (3.3 V, 25 °C)12 4.4 Current Consumption Characteristics13 4.5 Wi-Fi Radio13 4.5.1 Wi-Fi RF Standards13 4.5.2 Wi-Fi RF Transmitter (TX) Specifications14 4.5.3 Wi-Fi RF Receiver (RX) Specifications15 4.6 Bluetooth LE Radio16 4.6.1 Bluetooth LE RF Transmitter (TX) Specifications16 4.6.2 Bluetooth LE RF Receiver (RX) Specifications18 5 Module Schematics20 6 Peripheral Schematics21 7 Physical Dimensions and PCB Land Pattern22 7.1 Physical Dimensions22 7.2 Recommended PCB Land Pattern23 8 Product Handling24 8.1 Storage Conditions24 8.2 Electrostatic Discharge (ESD)24 8.3 Wave Soldering Profile24 8.4 Ultrasonic Vibration24 9 Related Documentation and Resources25 Revision History26 Espressif Systems5 Submit Documentation Feedback ESP8685-WROOM-07 Datasheet v0.5 List of Tables List of Tables 1 ESP8685-WROOM-07 Ordering Information3 2 Pin Definitions9 3 Test Point Definitions9 4 Strapping Pins11 5 Parameter Descriptions of Setup and Hold Times for the Strapping Pins11 6 Absolute Maximum Ratings12 7 Recommended Operating Conditions12 8 DC Characteristics (3.3 V, 25 °C)12 9 Current Consumption Depending on RF Modes13 10 Current Consumption Depending on Work Modes13 11 Wi-Fi RF Standards13 11 Wi-Fi RF Standards14 12 TX Power with Spectral Mask and EVM Meeting 802.11 Standards14 13 TX EVM Test14 14 RX Sensitivity15 15 Maximum RX Level15 16 RX Adjacent Channel Rejection16 17 Transmitter General Characteristics16 18 Transmitter Characteristics - Bluetooth LE 1 Mbps16 19 Transm…

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ESP8685­WROOM­07 User Manual 2.4 GHz Wi­Fi (802.11 b/g/n) and Bluetooth ® 5 module Built around ESP8685 series of SoC, RISC­V single­core microprocessor 2 MB or 4 MB flash in chip package 3 GPIOs Solder pad for external monopole antenna Pre-release v0.1 Espressif Systems Copyright © 2022 www.espressif.com About This Document This user manual shows how to get started with the ESP8685-WROOM-07 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 1.2 Pin Description4 2 Get Started on ESP8685­WROOM­076 2.1 What You Need6 2.2 Hardware Connection6 2.3 Set up Development Environment7 2.3.1 Install Prerequisites7 2.3.2 Get ESP-IDF7 2.3.3 Set up Tools8 2.3.4 Set up Environment Variables8 2.4 Create Your First Project8 2.4.1 Start a Project8 2.4.2 Connect Your Device8 2.4.3 Configure8 2.4.4 Build the Project9 2.4.5 Flash onto the Device10 2.4.6 Monitor11 3 U.S. FCC Statement12 4 Learning Resources16 4.1 Must-Read Documents16 4.2 Important Resources16 Revision History17 Espressif Systems3ESP8685-WROOM-07 User Manual v0.1 1 Overview 1Overview 1.1Module Overview ESP8685-WROOM-07 is a general-purpose Wi-Fi and Bluetooth LE 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. Module FCC ID: 2AC7Z-ESP868507. Table 1: ESP8685­WROOM­07 Specifications CategoriesParametersSpecifications Wi-Fi Protocols802.11 b/g/n (up to 150 Mbps) Frequency range2412~2462 MHz Bluetooth ® ProtocolsBluetooth ® LE: Bluetooth 5 and Bluetooth mesh RadioClass-1, class-2 and class-3 transmitter Hardware Module interfaces GPIO, SPI, UART, I2C, I2S, remote control peripheral, LED PWM controller, general DMA controller, TWAI ® controller (compatible with ISO 11898-1), temperature sensor, SAR ADC 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~+105 °C Moisture sensitivity level (MSL)Level 3 1.2Pin Description Pin Layout (Top View) 1 ANT 35 IO5IO10 Pin Layout (Bottom View) 6 42 3V3 IO4GND 7 8 9 10 IO9 EN RX TX Figure 1: Pin Layout Espressif Systems4ESP8685-WROOM-07 User Manual v0.1 1 Overview The module has 6 pins. See pin definitions in Table2. For peripheral pin configurations, please refer toESP8685 Datasheet. Table 2: Pin Definitions NameNo.Type 1 Function ANT1—Antenna GND2PGround IO53I/O/TGPIO5, ADC2_CH0, FSPIWP, MTDI, LED PWM IO44I/O/TGPIO4, ADC1_CH4, FSPIHD, MTMS, LED PWM IO105I/O/TGPIO10, FSPICS0, LED PWM 3V36PPower supply 1 P: power supply; I: input; O: output; T: high impedance. Table 3: Test Point Definitions NameNo.Type 1 Function IO97I/O/TGPIO9 EN8I High: on, enables the chip. Low: off, the chip powers off. Default: internally pulled-up. RX9I/O/TGPIO20, U0RXD TX10I/O/TGPIO21, U0TXD 1 P: power supply; I: input; O: output; T: high impedance. Espressif Systems5ESP8685-WROOM-07 User Manual v0.1 2 Get Started on ESP8685-WROOM-07 2Get Started on ESP8685­WROOM­07 2.1What You Need To develop applications for ESP8685-WROOM-07 module you need: •1 x ESP8685-WROOM-07 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 ESP8685-WROOM-07 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 details, see the sections below. Espressif Systems6ESP8685-WROOM-07 User Manual v0.1 2 Get Started on ESP8685-WROOM-07 7.After download, remove the jumper on IO9 and GND. 8.Power up the RF testing board again. ESP8685-WROOM-07 will switch to working mode. The chip will read programs from flash upon initialization. Note: IO9 is internally logic high. If IO9 is pulled low, the Download mode is selected. In other cases, the Boot mode is selected. 2.3Set up Development Environment The Espressif IoT Development Framework (ESP-IDF for short) is a framework for developing applications based on the Espressif chips. Users can develop applications with ESP chips 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 ESP8685-WROOM-07 module, you need the software libraries provided by Espressif in ESP-IDFrepository. To get ESP-IDF, create an installation directory (~/esp) to download ESP-IDF to …

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ESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD Date:December2,2022 FederalCommunicationsCommission OfficeofEngineeringandTechnologyLaboratoryDivision 7435OaklandMillsRd ColumbiaMD21046-1609 Subject:RequestforConfidentiality FCCID:2AC7Z-ESP868507 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:December2,2022 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-ESP868507 Ifyouhaveanyacknowledgementandresponse,pleasesendittoSportonInternationalInc. directly. Shouldyouhaveanyquestionsorcommentsregardingthismatter,pleasehavemybestattention. Sincerelyyours, ContactPerson:MiaZhou E-mail:[email protected]

Applicant/GranteeESPRESSIFSYSTEMS(SHANGHAI)CO.,LTD/2AC7Z FCCID:2AC7Z-ESP868507 Section15.212ModularTransmitters RequestforModularApprovalRequestforLimitedModularApproval RequirementsEUTConditionsComply(Y/N) SingleModularApprovalRequirements 1Theradioelementsofthemodular transmittermusthavetheirown shielding.Thephysicalcrystaland tuningcapacitorsmaybelocated externaltotheshieldedradioelements. Theradioportionofthismoduleis unshielded,pleaseseeexhibition externalphotos. N 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. Themodulehasnoconnectorbetween antenna.PleaserefertotheTestReport exhibition. N 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. TheModulewillputlabelinuser manualsincelimitedspace,andthe instructiononthelabelingruleofthe endproducthasbeenstatedintheUser Manualofthismodule.Pleasereferto theLabeldeclarationandUserManual exhibition. N 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.: EP281116 Brand Name: ESPRESSIF; Model Name: ESP8685-WROOM-07 Sporton International Inc. (Kunshan) Page Number : 1 of 4 TEL : 86-0512-5790-0158 Report Issued Date : Dec. 02, 2022 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : 2AC7Z-ESP868507 720510 1. External Photograph of EUT Photographs of EUT Report No.: EP281116 Brand Name: ESPRESSIF; Model Name: ESP8685-WROOM-07 Sporton International Inc. (Kunshan) Page Number : 2 of 4 TEL : 86-0512-5790-0158 Report Issued Date : Dec. 02, 2022 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : 2AC7Z-ESP868507

EspressifSystems(Shanghai)Co.,Ltd. Suite204,Block2,690BiboRoad,ZhangJiangHi-TechPark,Shanghai,China To FCC ThecompanyEspressifSystems(Shanghai)Co.,Ltd.,locatedatSuite204,Block2,690 BiboRoad,ZhangJiangHi-TechPark,Shanghai,China,wouldliketorequestthe authorizationforthisAgencytoputtheFCCcertificationID:2AC7Z-ESP868507inthe User’sManual.ThisrequestisduetotheproductmodelESP8685-WROOM-07doesnot haveenoughspacetoputit. Thankyoufortheattention. Trulyyours, _____________________________ SignatureoftheResponsible Name:MiaZhou Position:Certificationengineer

Photographs of EUT Report No.: EP281116 Brand Name: ESPRESSIF; Model Name: ESP8685-WROOM-07 Sporton International Inc. (Kunshan) Page Number : 3 of 4 TEL : 86-0512-5790-0158 Report Issued Date : Dec. 02, 2022 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : 2AC7Z-ESP868507 2. Internal Photograph of EUT Photographs of EUT Report No.: EP281116 Brand Name: ESPRESSIF; Model Name: ESP8685-WROOM-07 Sporton International Inc. (Kunshan) Page Number : 4 of 4 TEL : 86-0512-5790-0158 Report Issued Date : Dec. 02, 2022 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : 2AC7Z-ESP868507

Sporton International Inc. (Kunshan) Page Number : 1 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Dec. 02, 2022 FCC ID : 2AC7Z-ESP868507 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA281116 RF Exposure Evaluation Report APPLICANT : Espressif Systems (Shanghai) Co.,Ltd. EQUIPMENT : 2.4GHz Wi-Fi & BT IoT Module BRAND NAME : ESPRESSIF MODEL NAME : ESP8685-WROOM-07 FCC ID : 2AC7Z-ESP868507 STANDARD : 47 CFR Part 2.1091 The product evaluation date was started from Oct. 14, 2022 and completed on Oct. 14, 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 : Dec. 02, 2022 FCC ID : 2AC7Z-ESP868507 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA281116 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 : Dec. 02, 2022 FCC ID : 2AC7Z-ESP868507 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA281116 Revision History REPORT NO. VERSION DESCRIPTION ISSUED DATE FA281116 Rev. 01 Initial issue of report. Dec. 02, 2022 Sporton International Inc. (Kunshan) Page Number : 4 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Dec. 02, 2022 FCC ID : 2AC7Z-ESP868507 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA281116 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 : Dec. 02, 2022 FCC ID : 2AC7Z-ESP868507 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA281116 3. Description of Equipment Under Test (EUT) Product Feature & Specification EUT Type 2.4GHz Wi-Fi & BT IoT Module Brand Name ESPRESSIF Model Name ESP8685-WROOM-07 FCC ID 2AC7Z-ESP868507 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 LE Antenna Gain WLAN2.4GHz/Bluetooth: 2.33 dBi Antenna Type WLAN/Bluetooth: External Antenna HW Version V1.0 SW Version v1.1.3.4 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 : Dec. 02, 2022 FCC ID : 2AC7Z-ESP868507 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA281116 4. Maximum RF average output tune up power among production units <2.4GHz WLAN > Mode Maximum Average Power (dBm) 2.4GHz 802.11b 16.00 802.11g 19.00 802.11n-HT20 18.00 802.11n-HT40 17.50 <Bluetooth> Mode Maximum Average Power (dBm) Bluetooth LE 10.0 Sporton International Inc. (Kunshan) Page Number : 7 of 9 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Dec. 02, 2022 FCC ID : 2AC7Z-ESP868507 Report Version : Rev. 01 RF Exposure Evaluation R…

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Sporton International Inc. (Kunshan) Page Number : 1 of 43 TEL : +86-512-57900158 Report Issued Date : Dec. 02, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID: 2AC7Z-ESP868507 Report Template No.: BU5-FR15CBLE Version 2.0 FCC RF Test Report Report No. : FR281116A FCC RF Test Report APPLICANT : Espressif Systems (Shanghai) Co.,Ltd. EQUIPMENT : 2.4GHz Wi-Fi & BT IoT Module BRAND NAME : ESPRESSIF MODEL NAME : ESP8685-WROOM-07 FCC ID : 2AC7Z-ESP868507 STANDARD : FCC Part 15 Subpart C §15.247 CLASSIFICATION : (DTS) Digital Transmission System TEST DATE(S) : Aug. 17, 2022 ~ Oct. 13, 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 43 TEL : +86-512-57900158 Report Issued Date : Dec. 02, 2022 FAX : +86-512-57900958 Report Version : Rev. 01 FCC ID: 2AC7Z-ESP868507 Report Template No.: BU5-FR15CBLE Version 2.0 FCC RF Test Report Report No. : FR281116A 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 Sta…

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