2ARN3-BLK900TXMicrophone

FPC Antenna PCB Antenna FPC PCB FCC Caution: Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. IMPORTANT NOTE: Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help. FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

Shenzhen Jiayz photo industrial.,Ltd Address:A16 Building,Intelligent Terminal Industrial Park of Silicon Valley Power, Guanlan,Longhua District, Shenzhen,China Email:[email protected] Tel:0755-28435911 Fax:0755-28435911 Attestation Letter FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 2022-03-30 To Whom It May Concern, The RF chip, model nRF52810, installed in our product: Product Name: Microphone, Model: Blink900 TX, Blink900 TX Mini, Blink900 HM, Blink900 TXS, Blink900 X-TX, FCC ID: 2ARN3-BLK900TX. For use in America and this chip only supports 2.4GHz(2402~2480MHz) GFSK. The other function has been shielded by the manufacturer using the software. Sincerely, Signature michael zhao manager

Shenzhen Jiayz photo industrial.,Ltd Address:A16 Building,Intelligent Terminal Industrial Park of Silicon Valley Power, Guanlan,Longhua District, Shenzhen,China Email: [email protected] Tel: 0755-28435911 Fax: 0755-28435911 Product Similarity Declaration Date: 2022-03-09 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam, We Shenzhen Jiayz photo industrial.,Ltd hereby declare that we have a product named Microphone (Model number: Blink900 TX，FCC ID: 2ARN3-BLK900TX) was tested by Shenzhen Accurate Technology Co., Ltd. Meanwhile, for our marketing purpose, we would like to list a series models (Blink900 TX Mini, Blink900 HM, Blink900 TXS, Blink900 X-TX) on reports and certificate. All of the models are electrically identical, but the difference among them is model name. We confirm that all information above is true, and we’ll be responsible for all the consequences. Please contact with me if you have any question. Sincerely Yours, Signature: michael zhao manager

Shenzhen Jiayz photo industrial.,Ltd Address:A16 Building,Intelligent Terminal Industrial Park of Silicon Valley Power, Guanlan,Longhua District, Shenzhen,China Email: [email protected] Tel: 0755-28435911 Fax: 0755-28435911 FCC Confidential Authorization Date: 2022-03-09 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2ARN3-BLK900TX In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Shenzhen Jiayz photo industrial.,Ltd hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: michael zhao manager

Shenzhen Jiayz photo industrial.,Ltd Address:A16 Building,Intelligent Terminal Industrial Park of Silicon Valley Power, Guanlan,Longhua District, Shenzhen,China Email: [email protected] Tel: 0755-28435911 Fax: 0755-28435911 QA-FR-170-B 7/29/2014 FCC Authorization Date: 2022-03-09 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We Shenzhen Jiayz photo industrial.,Ltd , the undersigned, hereby authorizes Shenzhen Accurate Technology Co., Ltd. to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Shenzhen Accurate Technology Co., Ltd. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: michael zhao manager

Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF External Photos Page 1 of 5 External Photos Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF External Photos Page 2 of 5 Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF External Photos Page 3 of 5 Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF External Photos Page 4 of 5 Accessories Charging Box Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF External Photos Page 5 of 5

Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF LABEL AND LOCATION Page 1 of 1 FCC ID Label and Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF Internal Photos Page 1 of 4 Internal photos ANT 1 ANT 2 Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF Internal Photos Page 2 of 4 Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF Internal Photos Page 3 of 4 Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF Internal Photos Page 4 of 4

Note: This report may contain data that are not covered by the A2L ★ A accreditation and are marked with an asterisk “ ”. Shenzhen Accurate Technology Co., Ltd. is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with an asterisk ’*’. Customer model name, addresses, names, trademarks etc. are not considered data. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Shenzhen Accurate Technology Co., Ltd. 1/F., Building A, Changyuan New Material Port, Science & Industry Park, Nanshan District, Shenzhen, Guangdong, P.R. China Tel: +86 755-26503290 Fax: +86 755-26503396 Web: www.atc-lab.com Version 29: 2021-11-09 Page 1 of 44 FCC-DTS TEST REPORT Applicant Name : Shenzhen Jiayz photo industrial., Ltd Address : A16 Building, Intelligent Terminal Industrial Park of Silicon Valley Power, Guanlan, Longhua District, Shenzhen, China Report Number : SZNS211227-67134E-RF-00 FCC ID: 2ARN3-BLK900TX Test Standard (s) FCC PART 15.247 Sample Description Product Type: Microphone Model No.: Blink900 TX Multiple Model(s) No.: Blink900 TX Mini, Blink900 HM, Blink900 TXS, Blink900 X-TX （Model Difference please refer to the DOS） Trade Mark: N/A Date Received: 2021/12/27 Date of Test: 2022/02/09~2022/03/03 Report Date: 2022/03/19 Test Result: Pass* * In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Ting Lü Robert Li EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: SZNS211227-67134E-RF-00 Version 42: 2021-11-09 Page 2 of 44 FCC-DTS TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 SPECIAL ACCESSORIES ................................................................................................................................................. 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 DUTY CYCLE ............................................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................................. 7 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................... 9 TEST EQUIPMENT LIST ......................................................................................................................................... 10 FCC§15.247 (I), §1.1307 (B) (1) &§2.1093 – RF EXPOSURE ..................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 12 FCC §15.207 (A) – AC LINE CONDUCTED EMISSIONS .................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 EUT SETUP ................................................................................................................................................................ 13 EMI TEST RECEIVER SETUP ....................................................................…

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Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF Test Photos Page 1 of 2 Photo of Conducted Emission Measurement Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS211227-67134E-RF Test Photos Page 2 of 2 Photo of Radiated Emission Measurement (Below 1G) Photo of Radiated Emission Measurement (Above 1G)