2AJUYMS200118wireless PBT mouse

CALIBRATE MODE: Enter Calibration Mode When pH is Inaccurate Step1: Prepare the standard pH 4.0 and pH6.86 Buffer Solution (Sold Separately) Step2: Set the sensor to pH calibration mode. a. With the device on, hold the button for more than 5 seconds to enter calibration mode (ignore the shutdown ). b. Immerse the sensor in standard pH 4.0 buffer solution and slowly stir, expelling all the bubbles from the bottom. After CAL1 flashes, wait for C 4.0 to appear. When pH 4.0 and C 4.0 flash together, briefly press the button to confirm. Display PAS 4.0, indicating successful calibration 1. c. Before calibrating with pH 6.8, rinse the pH probe with distilled water. d. Immerse the sensor in standard pH 6.86 buffer solution and slowly stir, expelling all the bubbles from the bottom. After CAL1 flashes, wait for C 6.8 to appear. When pH 6.8 and C 6.8 flash to gether, briefly press the button to confirm. Display PAS 6.8, indicating successful calibration 2. e. After completing the pH 6.8 calibration, rinse the pH probe with distilled water before use Notice: a. After calibration, have to rinse the probe with distilled water before testing. b. During calibration, long-press to power off, or it will automatically shut down after 3 minutes of inactivity, displaying "Err". Hold the button again to re-enter calibration mode.

Rev 1/26/2023 Velong Enterprises Co.,Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07-16-2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AJUYMS200118 [Velong Enterprises Co.,Ltd] (“the applicant”) certifies that, as of the date ofthe filing of the application, the applicant [is not] identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Name: Kaki Guan Signature:

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Report No.: BTL-FCCP-1-2406C190 Page 1 of 44 FCC Radio Test Report FCC ID: 2AJUYMS200118 This report concerns: Original Grant Project No. : 2406C190 Equipment : 2-IN-1 WIRELESS THERMOMETER AND PH READER Brand Name : Mainstays Test Model : FL1058 Series Model : N/A Applicant : Velong Enterprises Co.,Ltd Address : No.3-7 west of 5th Najin Rd., North of 4th Huoda Rd., Nahou Industrial Zone,Yangdong District, Yangjiang City Manufacturer : Ningbo Shuanghe Hongsheng Electronic Technology Co.,Ltd Address : 2 Binxi South Road,Dayin Town Yuyao City,Zhejiang Province China Factory : Ningbo Shuanghe Hongsheng Electronic Technology Co.,Ltd Address : 2 Binxi South Road,Dayin Town Yuyao City,Zhejiang Province China Date of Receipt : Jun. 24, 2024 Date of Test : Jun. 27, 2024 ~ Aug. 01, 2024 Issued Date : Aug. 01, 2024 Report Version : R00 Test Sample : Engineering Sample No.: DG20240624126 & DG2024070858 for Radiated·Emissions, DG20240624125 for conducted. Standard(s) : FCC CFR Title 47, Part 15, Subpart C The above equipment has been tested and found compliance with the requirement of the relative standards by BTL Inc. Prepared by : Evan Yang Approved by : Chay Cai Room 108, Building 2, No. 1, Yile Road, Songshan Lake Zone, Dongguan City, Guangdong People’s Republic of China Te l : + 8 6-769-8318-3000 Web: www.newbtl.com Service mail: [email protected] Report No.: BTL-FCCP-1-2406C190 Page 2 of 44 Declaration BTL represents to the client that testing is done in accordance with standard procedures as applicable and that test instruments used has been calibrated with standards traceable to international standard(s) and/or national standard(s). BTL's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to ensure that additional production units of this model are manufactured with the identical electrical and mechanical components. BTL assumes no responsibility for the data provided by the customer, any statements, inferences or generalizations drawn by the customer or others from the reports issued by BTL. The report must not be used by the client to claim product certification, approval, or endorsement by A2LA or any agency of the U.S. Government. This report is the confidential property of the client. As a mutual protection to the clients, the public and ourselves, the test report shall not be reproduced, except in full, without our written approval. BTL’s laboratory quality assurance procedures are in compliance with the ISO/IEC 17025: 2017 requirements, and accredited by the conformity assessment authorities listed in this test report. BTL is not responsible for the sampling stage, so the results only apply to the sample as received. The information, data and test plan are provided by manufacturer which may affect the validity of results, so it is manufacturer’s responsibility to ensure that the apparatus meets the essential requirements of applied standards and in all the possible configurations as representative of its intended use. Limitation For the use of the authority's logo is limited unless the Test Standard(s)/Scope(s)/Item(s) mentioned in this test report is (are) included in the conformity assessment authorities acceptance respective. Please note that the measurement uncertainty is provided for informational purpose only and are not use in determining the Pass/Fail results. Report No.: BTL-FCCP-1-2406C190 Page 3 of 44 Table of Contents Page REPORT ISSUED HISTORY 5 1 . APPLICABLE STANDARDS 6 2 . SUMMARY OF TEST RESULTS 6 2.1 TEST FACILITY 7 2.2 MEASUREMENT UNCERTAINTY 7 2.3 TEST ENVIRONMENT CONDITIONS 7 3 . GENERAL INFORMATION 8 3.1 GENERAL DESCRIPTION OF EUT 8 3.2 DESCRIPTION OF TEST MODES 9 3.3 DUTY CYCLE 10 3.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 12 3.5 SUPPORT UNITS 12 3.6 CUSTOMER INFORMATION DESCRIPTION 12 4 . AC POWER LINE CONDUCTED EMISSIONS 13 4.1 LIMIT 13 4.2 TEST PROCEDURE 13 4.3 DEVIATION FROM TEST STANDARD 13 4.4 TEST SETUP 14 4.5 EUT OPERATING CONDITIONS 14 4.6 TEST RESULTS 14 5 . RADIATED EMISSION 15 5.1 LIMIT 15 5.2 TEST PROCEDURE 16 5.3 DEVIATION FROM TEST STANDARD 17 5.4 TEST SETUP 18 5.5 EUT OPERATING CONDITIONS 19 5.6 TEST RESULTS - 9 KHZ TO 30 MHZ 19 5.7 TEST RESULTS - 30 MHZ TO 1000 MHZ 19 5.8 TEST RESULTS - ABOVE 1000 MHZ 19 6 . 20 DB SPECTRUM BANDWIDTH MEASUREMENT 20 6.1 LIMIT 20 6.2 TEST PROCEDURE 20 6.3 DEVIATION FROM STANDARD 20 Report No.: BTL-FCCP-1-2406C190 Page 4 of 44 Table of Contents Page 6.4 TEST SETUP 20 6.5 EUT OPERATION CONDITIONS 20 6.6 TEST RESULTS 20 7 . TIMING TESTING 21 7.1 LIMIT 21 7.2 TEST PROCEDURE 21 7.3 DEVIATION FROM STANDARD 21 7.4 TEST SETUP 21 7.5 EUT OPERATION CONDITIONS 21 7.6 TEST RESULTS 21 8 . MEASUREMENT INSTRUMENTS LIST 22 9 . EUT TEST PHOTO 24 APPENDIX A - AC POWER LINE CONDUCTED EMISSIONS 27 APPENDIX B - RADIATED EMISSION - 9 KHZ TO 30 MHZ 28 APPENDIX C - RADIATED EMISSION - 30 MHZ TO 1000 MHZ 33 APPENDIX D - RADIATED EMISSION- ABOVE 1000 MHZ 38 APPENDIX E - 20 DB SPECTRUM BANDWIDTH 41 APPENDIX F - TIMING TESTING 43 Report No.: BTL-FCCP-1-2406C190 Page 5 of 44 REPORT ISSUED HISTORY Report No. Version Description Issued Date Note BTL-FCCP-1-2406C190 R00 Original Report. Aug. 01, 2024 Valid Report No.: BTL-FCCP-1-2406C190 Page 6 of 44 1. APPLICABLE STANDARDS According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards: ANSI C63.10-2013 2. SUMMARY OF TEST RESULTS Test procedures according to the technical standard(s): FCC CFR Title 47, Part 15, Subpart C Standard(s) Section Test Item Test Result Judgment Remark 15.207 AC Power Line Conducted Emissions APPENDIX A N/A ------ 15.205 15.209 15.231(e) Radiated Emission APPENDIX B APPENDIX C APPENDIX D PASS ------ 15.231(c) 20 dB Spectrum Bandwidth APPENDIX E PASS ------ 15.231(e) Timing Testing APPENDIX F PASS ------ 15.203 Antenna Requirement ------ PASS Note(2) Note: (1) “N/A” denotes test is not applicable in this test report. (2) The device what use a per…

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Report No.: BTL-FCCP-1-2406C190 Page 24 of 44 9. EUT TEST PHOTO Radiated Emissions Test Photos 9 kHz to 30 MHz Report No.: BTL-FCCP-1-2406C190 Page 25 of 44 Radiated Emissions Test Photos 30 MHz to 1 GHz Report No.: BTL-FCCP-1-2406C190 Page 26 of 44 Radiated Emissions Test Photos Above 1 GHz