2ATPO-ESP32-SLWIFI and BT Module

C5266091_X10_Ed.2 1/1 < Shenzhen Ai-Thinker Technology Co., Ltd > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2020/07/06 Subject: Request for Confidentiality FCC ID: 2ATPO-ESP32-SL To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No Block Diagram ☐ Schematics ☐ Test Report No No Test Setup Photos No User’s Manual ☐ NOTE 1 Internal Photos ☐ NOTE 1 Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of __180____ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, C5266091_X10_Ed.2 1/1 Signature: Name: facheng su Title: Manager

C5266091_X8_Ed.1 1/1 Letter of Authorization < Shenzhen Ai-Thinker Technology Co., Ltd > Company: Address: Room 701, building B, huafeng industrial park, aviation road, sanwei community, hangcheng street, baoan district, shenzhen, China Product Name: WIFI and BT Module Model Number(s): ESP32-SL Product Description: WIFI and BT Module We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: facheng su Date: 2020/07/06 Title: Manager Signature of applicant: Shenzhen Ai-Thinker Technology Co., Ltd

Shenzhen Ai-Thinker Technology Co., Ltd FCC – Modular Approval Request Rev 2.0 Modular Transmitter Approval Request Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD21046 Company name: Shenzhen Ai-Thinker Technology Co., Ltd FCC ID: 2ATPO-ESP32-SL Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 ‘Module Equip Auth Guide v02’. FCC ID: 2ATPO-ESP32-SLhas been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly Yes,the products have a shield, Physical components and tuning capacitor(s) are assembly to the module and located internal to the shield. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal Yes,The modulehas buffered modulation/data inputs. The module must contain power supply regulation on the module Yes,The modular transmitter has its own power supply regulation. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) Yes,The module contains a permanently attached PCB antenna. The module must demonstrate compliance in a stand-alone configuration Yes, The modulecompliance in a stand- alone configuration. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labeling requirements) Yes.The module has its permanently affixed FCC ID labeland the FCC ID label is laser engraved on the shield. The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee The module complies with all specific rules applicable to the transmitter. The module must comply with RF exposure requirements Yes. We provided an MPE report to show the modulecomply with RF exposure requirements. Name: facheng su Date: Jul. 06. 2020 Title: Manager Signature of applicant:

S20052901306 Model: ESP32-SL N20190309V1 Photo 1 Photo 2

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S20052901306 Model: ESP32-SL N20190309V1 Photo 1 Photo 2 S20052901306 Model: ESP32-SL N20190309V1 Photo 3 Photo 4 BT/WIFI ANT

FCC ID: 2ATPO-ESP32-SL RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) MPE Calculation Method E (V/m) ＝ d GP**30 Power Density: Pd (W/m²) ＝ 377 2 E E ＝ Electric field (V/m) P ＝ Average RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 2 *377 **30 D GP From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. Measurement Result Operation Frequency: 2412-2462MHz for 802.11b/g/11n; 2402-2480MHz for BT Power density limited: 1mW/ cm 2 Antenna Type: PCB Antenna Antenna gain: 1 dBi R=20cm WIFI: conducted power Evaluation result Power density Limits (dBm)(mW)(dBi)Numeric 2412 10.3711±112 15.8491.001.260.00401 2437 10.7711±112 15.8491.001.260.00401 2462 10.3811±112 15.8491.001.260.00401 2412 9.3210±111 12.5891.001.260.00321 2437 9.8910±111 12.5891.001.260.00321 2462 9.3210±111 12.5891.001.260.00321 2412 9.310±111 12.5891.001.260.00321 2437 9.6810±111 12.5891.001.260.00321 2462 9.0510±111 12.5891.001.260.00321 2422 9.4710±111 12.5891.001.260.00321 2437 9.7710±111 12.5891.001.260.00321 2452 9.6810±111 12.5891.001.260.00321 24024.754±15 3.1621.001.260.00081 24413.424±15 3.1621.001.260.00081 24803.714±15 3.1621.001.260.00081 24026.895±16 3.9811.001.260.00101 24415.425±16 3.9811.001.260.00101 24805.615±16 3.9811.001.260.00101 24027.286.5±17.5 5.6231.001.260.00141 24415.796.5±17.5 5.6231.001.260.00141 24805.916.5±17.5 5.6231.001.260.00141 24024.74±15 3.1621.001.260.00081 24403.674±15 3.1621.001.260.00081 24803.194±15 3.1621.001.260.00081 GFSK π/4-DQPSK 8-DPSK GFSK 802.11n HT40 (mW/cm2 ) Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) 802.11b 802.11g (mW/cm2) Antenna Gain Max tune-up power 802.11n HT20 Conclusion: For the max result : 0.0056≤ 1.0 for Max Power Density, compliance RF exposure.. Signature: Date: 2020-07-06 NAME AND TITLE (Please print or type): Alex li/Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen P.R. China.

Report No.: S20052901306002 Version.1.3 Page 1 of 44 RADIO TEST REPORT FCC ID: 2ATPO-ESP32-SL Product: WIFI+BT Module Trade Mark: B&T, Ai-Thinker Model No.: ESP32-SL Family Model: N/A Report No.: S20052901306002 Issue Date: 17 Jun. 2020 Prepared for shenzhen anxinke technology co., LTD Room 701, building B, huafeng industrial park, aviation road, sanwei community, hangcheng street, baoan district, shenzhen, China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen 518126 P.R. China Tel.: +86-755-6115 6588 Fax.: +86-755-6115 6599 Website:http://www.ntek.org.cn Report No.: S20052901306002 Version.1.3 Page 2 of 44 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 16 7.3 6DB BANDWIDTH ....................................................................................................................................... 25 7.4 DUTY CYCLE ............................................................................................................................................... 26 7.5 PEAK OUTPUT POWER .............................................................................................................................. 28 7.6 POWER SPECTRAL DENSITY ................................................................................................................... 29 7.7 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 31 7.8 SPURIOUS RF CONDUCTED EMISSIONS................................................................................................ 32 7.9 ANTENNA APPLICATION .......................................................................................................................... 33 8 TEST RESULTS ................................................................................................................................................... 34 Report No.: S20052901306002 Version.1.3 Page 3 of 44 1 TEST RESULT CERTIFICATION Applicant’s name ......................... : Address ....................................... : Manufacturer's Name .................. : shenzhen anxinke technology co., LTD Address ....................................... : Room 701, building B, huafeng industrial park, aviation road, sanwei community, hangcheng street, baoan district, shenzhen, China Product description Product name .............................. : WIFI+BT Module Model and/or type reference ..... : ESP32-SL Family Model ............................... : N/A Measurement Procedure Used: APPLICABLE STANDARDS APPLICABLE STANDARD/ TEST PROCEDURE TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C KDB 174176 D01 Line Conducted FAQ v01r01 ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Complied This device described above has been tested by Shenzhen NTEK Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of Shenzhen NTEK Testing Technology Co., Ltd., this document may be altered or revised by Shenzhen NTEK Testing Technology Co., Ltd., personnel only, and shall be noted in the revision of the document. The test results of this report relate only to the tested sample identified in this report. Date of Test : 02 Jun. 2020 ~ 15 Jun, 2020 Testing Engineer : (Mary Hu) Technical Manager : (Jason Chen) Authorized Signatory : (Sam Chen) , China Shenzhen Ai-Thinker Technology Co., Ltd Room 701, Building B, Huafeng Industrial Park, Hangkong Road, Sanwei Community,shenzhen Report No.: S20052901306002 Version.1.3 Page 4 of 44 2 SUMMARY OF TEST RESULTS FCC Part15 (15.247), Subp…

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Report No.: S20052901306003 Version.1.3 Page 1 of 74 FCC RADIO TEST REPORT FCC ID: 2ATPO-ESP32-SL Product: WIFI+BT Module Trade Mark: B&T, Ai-Thinker Model No.: ESP32-SL Family Model: N/A Report No.: S20052901306003 Issue Date: 17 Jun. 2020 Prepared for shenzhen anxinke technology co., LTD Room 701, building B, huafeng industrial park, aviation road, sanwei community, hangcheng street, baoan district, shenzhen, China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen P.R. China Tel.: +86-755-6115 6588 Fax.: +86-755-6115 6599 Website:http://www.ntek.org.cn Report No.: S20052901306003 Version.1.3 Page 2 of 74 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES ........................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ........................................................................................ 5 2.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ......................................................................................................... 10 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ..................................................................... 10 6.2 SUPPORT EQUIPMENT............................................................................................................................... 11 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 12 7 TEST REQUIREMENTS .................................................................................................................................... 14 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 14 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 17 7.3 6DB BANDWIDTH ....................................................................................................................................... 26 7.4 DUTY CYCLE ............................................................................................................................................... 28 7.5 MAXIMUM OUTPUT POWER .................................................................................................................... 30 7.6 POWER SPECTRAL DENSITY ................................................................................................................... 32 7.7 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 34 7.8 SPURIOUS RF CONDUCTED EMISSIONS................................................................................................ 36 7.9 ANTENNA APPLICATION .......................................................................................................................... 37 8 TEST RESULTS .................................................................................................................................................. 38 8.1 MAXIMUM CONDUCTED OUTPUT POWER........................................................................................... 38 8.2 OCCUPIED CHANNEL BANDWIDTH ....................................................................................................... 39 8.3 MAXIMUM POWER SPECTRAL DENSITY LEVEL ................................................................................. 46 8.4 BAND EDGE ................................................................................................................................................. 53 8.5 CONDUCTED RF SPURIOUS EMISSION .................................................................................................. 62 Report No.: S20052901306003 Version.1.3 Page 3 of 74 1 TEST RESULT CERTIFICATION Applicant’s name ......................... : Address ....................................... : Manufacturer's Name .................. : shenzhen anxinke technology co., LTD Address ....................................... : Room 701, building B, huafeng industrial park, aviation road, sanwei community, hangcheng street, baoan district, shenzhen, China Product description Product name .............................. : WIFI+BT Module Model and/or type reference ..... : ESP32-SL Family Model ............................... : N/A Measurement Procedure Used: APPLICABLE STANDARDS APPLICABLE STANDARD/ TEST PROCEDURE TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C KDB 174176 D01 Line Conducted FAQ v01r01 ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Complied This device described above has been tested by Shenzhen NTEK Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without …

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FCC ID: 2ATPO-ESP32-SL Radiated Measurement Photos FCC ID: 2ATPO-ESP32-SL Conducted Measurement Photos