2A789-TSW-TCommunication Stick

Rev 1/26/2023 Ningbo Lingzhu Technology CO., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03-20-2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2A789-TSW-T Ningbo Lingzhu Technology CO., Ltd. certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Applicant signature: Applicant printed name: Linyun Li

Ningbo Lingzhu Technology CO., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03-20-2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2A789-TSW-T Ningbo Lingzhu Technology CO., Ltd. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, Applicant signature: Applicant printed name: Linyun Li

Rev 1/26/2023 Ningbo Lingzhu Technology CO., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 05-23-2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2A789-TSW-T Ningbo Lingzhu Technology CO., Ltd. certifies that, as of the date of the filing of the application, Tuya Global Inc is our designated U.S. agent for service of process for the above referenced FCC ID: 2A789-TSW-T. Ningbo Lingzhu Technology CO., Ltd. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Tuya Global Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: FRN: 0033411059 Name: Tuya Global Inc. Address: 3979 Freedom Circle, Suite 340, Santa Clara, CA 95054, USA Contact Person: Eric Shen Tel.: 626-215-3367 Email: [email protected] Sincerely, Hangzhou Tuya Information Technology Co., Ltd Tuya Global Inc Linyun Li Eric Shen

Ningbo Lingzhu Technology CO., Ltd. Date: 2023-03-20 To: Federal Communications Commission 7435 Oakland Mills Road Columbia MD FCC ID: 2A789-TSW-T To Whom It May Concern: This letter is to ascertain that Ningbo Lingzhu Technology CO., Ltd. Product name: Communication Stick, Model: TSW-T1, TSW-T2, TSW-T4, TSW-T****(* can be 0-9, A-Z or blank, only for different connection interface no impact on functions) have been the units used for conducting FCC compliance testing, the SDoC part will be tested by FCC recognized test lab. If you have any question or concerns, please contact us. Sincerely, Signature Company name: Ningbo Lingzhu Technology CO., Ltd. Address: No.578,Building 7,No.535 Kangqiao South Road, Jiangbei District Ningbo City,Zhejiang Province E-mail: [email protected] Tel: +86-15355487379 Printed Name: Linyun Li

Rev 11/20/07 Ningbo Lingzhu Technology CO., Ltd. Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2A789-TSW-T Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name (Block Diagram, Schematics, operation description) (Block Diagram, Schematics, operation description.pdf”) The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name (Internal Photos, Test Setup Photos) (Internal Photos, Test Setup Photos.pdf”) Number of days: 180 days Sincerely, (signature) (printed name) Linyun Li

C:\Users\xu-jx\Desktop\back up\Project\2023\Ningbo Lingzhu Technology CO., Ltd\report\FCC POA _Letter.docx Ningbo Lingzhu Technology CO., Ltd. Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: 03/20/2023 SUBJECT: FCC Application for FCC ID: 2A789-TSW-T To Whom It May Concern: We, the undersigned, hereby authorize Yu Anlu at TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Printed Name: Linyun Li Signature：

Special design instruction letter for USB communication stick connector 1，Real object and rendering 2，communication port The actual operation inside the USB interface of the communication stick is RS485 , not the D+ and D- signals of the USB standard, which are not compatible with the electrical interface. 3. Structure There is a threaded ring installed on the periphery of the USB head of the communication stick, as shown in the figure above. It is non-detachable and is used for structural connection with the device body. Because of this threaded ring, the USB head of the communication stick cannot be connected with the USB of the computer or the tablet.

External Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 1 of 5 Product: Communication Stick FCC ID: 2A789-TSW-T TSW-T1 outside view External Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 2 of 5 Product: Communication Stick FCC ID: 2A789-TSW-T Antenna External Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 3 of 5 Product: Communication Stick FCC ID: 2A789-TSW-T TSW-T2 outside view External Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 4 of 5 Product: Communication Stick FCC ID: 2A789-TSW-T External Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 5 of 5 Product: Communication Stick FCC ID: 2A789-TSW-T TSW-T4 outside view

Label & Location

Internal Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 1 of 4 Product: Communication Stick FCC ID: 2A789-TSW-T Antenna port Antenna Internal Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 2 of 4 Product: Communication Stick FCC ID: 2A789-TSW-T Internal Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 3 of 4 Product: Communication Stick FCC ID: 2A789-TSW-T Internal Photos Documentation Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Page 4 of 4 Product: Communication Stick FCC ID: 2A789-TSW-T

Report No: 709502300844-00C EMC_SHA_F_R_02.06E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 2 Rev. 20.00 MPE Calculation Applicant: Ningbo Lingzhu Technology CO., Ltd. Address: No.578,Building 7,No.535 Kangqiao South Road, Jiangbei District Ningbo City,Zhejiang Province Product: Communication Stick FCC ID: 2ANDL-TCS905-3S Model No.: 2A789-TSW-T Reference RF report # 709502300844-00A, 709502300844-00B According to subpart 15.247(i)and subpart §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f²) 30 30–300 27.5 0.073 0.2 30 300–1,500 / / f/1500 30 1,500–100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculated Formulary: Predication of MPE limit at a given distance S = PG/4πR² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Report No: 709502300844-00C EMC_SHA_F_R_02.06E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 2 Rev. 20.00 Calculated Data for Wi-Fi Maximum peak output power at antenna input terminal (dBm): 22.65 Maximum peak output power at antenna input terminal (mW): 184.007 Prediction distance (cm): 20 Antenna Gain, typical (dBi): 3.37 Maximum Antenna Gain (numeric): 2.17 The worst case is power density at predication frequency at 20 cm (mW/cm 2 ): 0.0796 MPE limit for general population exposure at prediction frequency (mW/cm 2 ): 1.0 The max power density 0.0796 (mW/cm 2 ) < 1 (mW/cm 2 ) Result: Compliant Calculated Data for BLE Maximum peak output power at antenna input terminal (dBm): 8.98 Maximum peak output power at antenna input terminal (mW): 7.91 Prediction distance (cm): 20 Antenna Gain, typical (dBi): 3.37 Maximum Antenna Gain (numeric): 2.17 The worst case is power density at predication frequency at 20 cm (mW/cm 2 ): 0.0034 MPE limit for general population exposure at prediction frequency (mW/cm 2 ): 1.0 The max power density 0.0034 (mW/cm 2 ) < 1 (mW/cm 2 ) Result: Compliant - TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch Reviewed by: Prepared by: Tested by: _____________________ _____________________ ______________________ Hui TONG Jiaxi XU Cheng Huali EMC Section Manager EMC Project Engineer EMC Test Engineer Date: 2023-03-17 Date: 2023-03-17 Date: 2023-03-17

EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 56 Rev. 171.00 FCC - TEST REPORT Report Number : 709502300844-00A Date of Issue: Mar.15,2023 Model : TSW-T1, TSW-T2,TSW-T4, TSW-T****(* can be 0-9, A-Z or blank, only for different connection interface no impact on functions) Product Type : Communication Stick Applicant : Ningbo Lingzhu Technology CO., Ltd. Address : No.578,Building 7,No.535 Kangqiao South Road, Jiangbei District Ningbo City,Zhejiang Province China Manufacturer : Ningbo Lingzhu Technology CO., Ltd. Address : No.578,Building 7,No.535 Kangqiao South Road, Jiangbei District Ningbo City,Zhejiang Province China Test Result : ◼ Positive  Negative Total pages including Appendices : 56 TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch is a subcontractor to TÜV SÜD Product Service GmbH according to the principles outlined in ISO 17025. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch reports apply only to the specific samples tested under stated test conditions. Construction of the actual test samples has been documented. It is the manufacturer's responsibility to assure that additional production units of this model are manufactured with identical electrical and mechanical components. The manufacturer/importer is responsible to the Competent Authorities in Europe for any modifications made to the production units which result in non-compliance to the relevant regulations. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch shall have no liability for any deductions, inferences or generalizations drawn by the client or others from TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch issued reports. This report is the confidential property of the client. As a mutual protection to our clients, the public and ourselves, extracts from the test report shall not be reproduced except in full without our written approval. Report Number: 709502300844-00A EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 56 Rev. 171.00 1 Table of Contents 1 Table of Contents......................................................................................................................................................... 2 2 Details about the Test Laboratory .............................................................................................................................. 3 3 Description of the Equipment under Test ................................................................................................................... 4 4 Summary of Test Standards ....................................................................................................................................... 6 5 Summary of Test Results ............................................................................................................................................ 7 6 General Remarks ......................................................................................................................................................... 8 7 Test Setups .................................................................................................................................................................. 9 8 Systems test configuration ........................................................................................................................................ 12 9 Technical Requirement.............................................................................................................................................. 13 9.1 Conducted Emission ......................................................................................................................................... 13 9.2 Conducted peak output power .......................................................................................................................... 18 9.3 6dB bandwidth ................................................................................................................................................... 19 9.4 Power spectral density ...................................................................................................................................... 23 9.5 Spurious RF conducted emissions ................................................................................................................... 27 9.6 Band edge .......................................................................................................................................................... 37 9.7 Spurious radiated emissions for transmitter .................................................................................................... 44 10 Test Equipment List ............................................................................................................................................... 53 11 System Measurement Uncertainty ....................................................................................................................... 54 12 Photographs of Test Set-ups ................................................................................................................................ 55 13 Photographs of EUT .............................................................................................................................................. 56 Report Number: 709502300844-00A EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 3 of 56 Rev. 171.00 2 Details about the Test Laboratory Details about the Test Laboratory Test Site 1 Company name:…

Text truncated - open the document above for the full version.

EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 41 Rev. 171.00 FCC - TEST REPORT Report Number : 709502300844-00B Date of Issue: Mar.15,2023 Model : TSW-T1, TSW-T2, TSW-T4, TSW-T****(* can be 0-9, A-Z or blank, only for different connection interface no impact on functions) Product Type : Communication Stick Applicant : Ningbo Lingzhu Technology CO., Ltd. Address : No.578,Building 7,No.535 Kangqiao South Road, Jiangbei District Ningbo City,Zhejiang Province China Manufacturer : Ningbo Lingzhu Technology CO., Ltd. Address : No.578,Building 7,No.535 Kangqiao South Road, Jiangbei District Ningbo City,Zhejiang Province China Test Result : ◼ Positive  Negative Total pages including Appendices : 41 TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch is a subcontractor to TÜV SÜD Product Service GmbH according to the principles outlined in ISO 17025. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch reports apply only to the specific samples tested under stated test conditions. Construction of the actual test samples has been documented. It is the manufacturer's responsibility to assure that additional production units of this model are manufactured with identical electrical and mechanical components. The manufacturer/importer is responsible to the Competent Authorities in Europe for any modifications made to the production units which result in non-compliance to the relevant regulations. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch shall have no liability for any deductions, inferences or generalizations drawn by the client or others from TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch issued reports. This report is the confidential property of the client. As a mutual protection to our clients, the public and ourselves, extracts from the test report shall not be reproduced except in full without our written approval. Report Number: 709502300844-00B EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 41 Rev. 171.00 1 Table of Contents 1 Table of Contents......................................................................................................................................................... 2 2 Details about the Test Laboratory .............................................................................................................................. 3 3 Description of the Equipment under Test ................................................................................................................... 4 4 Summary of Test Standards ....................................................................................................................................... 6 5 Summary of Test Results ............................................................................................................................................ 7 6 General Remarks ......................................................................................................................................................... 8 7 Test Setups .................................................................................................................................................................. 9 8 Systems test configuration ........................................................................................................................................ 12 9 Technical Requirement.............................................................................................................................................. 13 9.1 Conducted Emission ......................................................................................................................................... 13 9.2 Conducted peak output power .......................................................................................................................... 18 9.3 6dB bandwidth ................................................................................................................................................... 20 9.4 Power spectral density ...................................................................................................................................... 22 9.5 Spurious RF conducted emissions ................................................................................................................... 24 9.6 Band edge .......................................................................................................................................................... 28 9.7 Spurious radiated emissions for transmitter .................................................................................................... 31 10 Test Equipment List ............................................................................................................................................... 38 11 System Measurement Uncertainty ....................................................................................................................... 39 12 Photographs of Test Set-ups ................................................................................................................................ 40 13 Photographs of EUT .............................................................................................................................................. 41 Report Number: 709502300844-00B EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 3 of 41 Rev. 171.00 2 Details about the Test Laboratory Test Site 1 Company name: TÜV SÜD Certification and Testin…

Text truncated - open the document above for the full version.

东莞市皇捷通讯科技有限公司 Antenna Specification Manufacture：HUANGJIE Product Name：WiFi Antenna Antenna Type：external Test Date：2023.02.22 Tested by：S.He Approved by：HE XIU MING 东莞市皇捷通讯科技有限公司 Content 1.General Description ................................................................................. 1 2.Test Configurations .................................................................................. 2 2.1 Test Environment ............................................................................ 2 2.2 Test Equipment ............................................................................... 2 2.3 Test Principle ................................................................................... 2 3.Test Results .............................................................................................. 3 3.1 Gain and Efficiency.......................................................................... 3 3.2 Radiation Pattern ............................................................................ 4 4.Antenna Dimensions ............................................................................... 5 5.EUT Photo................................................................................................ 5 6.Test Setup Photo ...................................................................................... 6 东莞市皇捷通讯科技有限公司 1 1.General Description Manufacturer DONGGUAN HUANGJIE COMMUNICATION TECHNOLOGY CO., LTD. Address No.3 Taihe Road, Daxiandi Industrial Zone, Quantang Village, Liaobu Town, Dongguan City Test Location No.3 Taihe Road, Daxiandi Industrial Zone, Quantang Village, Liaobu Town, Dongguan City Product Name WiFi Antenna Product model • Directly connected external antenna Antenna Type External Antenna Test Items Gain; Efficiency; Radiation Pattern Test Frequency 2400-2500MHz Test Standard / 东莞市皇捷通讯科技有限公司 2 2.Test Configurations 2.1 Test Environment Temperature (°C) 25 Humidity (%RH) 60 Atmospheric Pressure (kPa) 100.5 2.2 Test Equipment Test System ETS Test Instrument darkroom 2.3 Test Principle 东莞市皇捷通讯科技有限公司 3 3.Test Results 3.1 Gain and Efficiency Frequency (MHz) Peak Gain (dBi) Efficiency (%) 2400 3.36 56.8 2410 3.37 56.6 2420 3.13 54.4 2430 2.83 55.3 2440 2.86 59.3 2450 2.67 63.6 2460 2.32 65 2470 1.99 64.8 2480 2.62 72.8 2490 2.82 78.5 2500 2.7 78.8 东莞市皇捷通讯科技有限公司 4 3.2 Radiation Pattern 2400MHz 3D 2450MHz 3D 2500MHz 3D 东莞市皇捷通讯科技有限公司 5 4.Antenna Dimensions 5.EUT Photo 东莞市皇捷通讯科技有限公司 6 6.Test Setup Photo

Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Product: Communication Stick FCC ID: 2A789-TSW-T ©2023 Not to be reproduced, except in its entirety, Page 1 of 2 without the Permission of TÜ V SÜ D Certification and Testing (China) Co., Ltd. Shanghai Branch PHOTOGRAPHS OF TEST SET UP Field Strength and Harmonics Test Setup Radiated Emission Setup 30MHz ~ 1GHz 1GHz ~ 18GHz Manufacturer: Ningbo Lingzhu Technology CO., Ltd. Product: Communication Stick FCC ID: 2A789-TSW-T ©2023 Not to be reproduced, except in its entirety, Page 2 of 2 without the Permission of TÜ V SÜ D Certification and Testing (China) Co., Ltd. Shanghai Branch 18GHz ~ 25GHz Conducted emission Test Setup