2AQBD-R537-1 wireless sensor

Operation instruction Model number: Description: R53 Main Features Temperature detection, detection range -40°C--70°C. Humidity detection, detection range 1%-99%. Wind speed detection, Real-time wind speed. Wind direction detection, 16 directions. Rainfall detection, detection range 0-12999mm. UV detection, detection range 1-16. Light intensity detection, detection range 0-200Klux. Low voltage indication. FSK 915MHZ transmission mode. LED indicator. Flashes when the unit transmits a reading 1 function button. Solar power for backup. Operating instructions After power-on or reset, wind speed, wind direction, rainfall, UV, light intensity, temperature, and humidity are detected, data is sent once, and LED flashes synchronously once. Send formats include: temperature, humidity, low voltage, etc. Built-in low voltage detection function, no peripheral components, cost saving. Detection time: when the emitting LED is on. Manufacturer: FUJIAN YOUTONG INDUSTRIES CO.,LTD. Address: North part of 1st, 2nd~3rd floor, Building 1#, M9511 industries park, No.18, Majiang Road, Mawei DISTRICT, Fuzhou City, Fujian, China FCC STATEMENT 1. 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. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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 foran uncontrolled environment. IC WARNING This device contains licence-exempt transmitter(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:(1) This device may not cause interference.(2) This device must accept any interference, including interference that may cause undesired operation of the device. L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes:1. L’appareil ne doit pas produire de brouillage;2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.

Fujian Youtong Industries Co.,Ltd 2023-05-17 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2AQBD-R53 ) [Fujian Youtong Industries Co.,Ltd] (“the applicant”) 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, Dongsheng Huang General Manager Fujian Youtong Industries Co.,Ltd 2023-05-17 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2AQBD-R53 ) [Fujian Youtong Industries Co.,Ltd] (“the applicant”) 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, Dongsheng Huang General Manager

Fujian Youtong Industries Co.,Ltd Long Term Confidentiality Request Letter 2023-5-17 Eurofins Electrical and Electronic Testing NA, Inc 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (7-1 wireless sensor / R53/ 2AQBD-R53) To Whom It May Concern This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the (Block Diagram, Schematic diagram, Operational Description) required to be submitted with this application be permanently withheld from public review. SPECIFY REASON FOR REQUEST (i.e. the above documents are company proprietary information that could never get into the possession of your competition). Please contact me if there is any information you may need. Sincerely, Signature: Name: Dongsheng Huang Job Title: General Manager Address: North part of 1st 2nd & 3rd floor Building 1 No.18 Majiang Road Mawei Fuzhou Fujian China

Fujian Youtong Industries Co.,Ltd Agent Authorization Letter 2023-5-17 Eurofins Electrical and Electronic Testing NA, Inc 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Global United Technology Services Co., Ltd.to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Dongsheng Huang Job Title: General Manager Address: North part of 1st 2nd & 3rd floor Building 1 No.18 Majiang Road Mawei Fuzhou Fujian China

GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 5 Product Name: 7-1 wireless sensor Test Model No.: R53 EUT Constructional Details GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 5 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 5 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 5 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 5 of 5 ------End------

GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 9 Product Name: 7-1 wireless sensor Test Model No.: R53 EUT Constructional Details GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 9 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 9 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 9 Antenna GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 5 of 9 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 6 of 9 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 7 of 9 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 8 of 9 GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 9 of 9 ------End------

FCC ID: 2AQBD-R53 1. Limit for Portable Equipment Exposure Frequency 1-g SAR 100MHz-6GHz 3.0 For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz 2. Estimation Result Frequency (MHz) PK Output Power(dBm) Output Power(mW) Test Separation Distance (mm) Measurement Result 1-g SAR 915 -10.21 0.095 5 0.018 3.0 Note: 1. use the maximum E-field strength(87.14dBuV/m) for the RF exposure evaluation 2. E(dBuV/m)=EIRP(dBm)-95.2 for distance 3m so the EIRP=87.14dBuV/m-95.2=-8.06dBm 3. EIRP(dBm)= ERP+2.15dBi so the ERP=-8.06dBm -2.15dBi=-10.21dBm ------The End------

Global United Technology Services Co., Ltd. Report No.: GTSL2023050261F01 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 18 TEST REPORT Applicant: Fujian Youtong Industries Co., Ltd. Address of Applicant: North part of 1st 2nd & 3rd floor Building 1 No.18 Majiang Road Mawei Fuzhou Fujian China Manufacturer: Fujian Youtong Industries Co., Ltd. Address of Manufacturer: North part of 1st 2nd & 3rd floor Building 1 No.18 Majiang Road Mawei Fuzhou Fujian China Factory: Fujian Youtong Industries Co., Ltd. Address of Factory: North part of 1st 2nd & 3rd floor Building 1 No.18 Majiang Road Mawei Fuzhou Fujian China Equipment Under Test (EUT) Product Name: 7-1 wireless sensor Model No.: R53 Trade Mark: N/A FCC ID: 2AQBD-R53 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.249 Date of sample receipt: May 11, 2023 Date of Test: May 11~12, 2023 Date of report issued: May 16, 2023 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL2023050261F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 18 2 Version Version No. Date Description 00 May 16, 2023 Original Prepared By: Date: May 16, 2023 Project Engineer Check By: Date: May 16, 2023 Reviewer Report No.: GTSL2023050261F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 18 3 Contents Page 1 COVER PAGE ............................................................................................................................................ 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 4.1 MEASUREMENT UNCERTAINTY ............................................................................................................ 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 6 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 6 5.4 DEVIATION FROM STANDARDS ............................................................................................................ 6 5.5 ABNORMALITIES FROM STANDARD CONDITIONS .................................................................................. 6 5.6 TEST FACILITY ................................................................................................................................... 6 5.7 TEST LOCATION ................................................................................................................................. 6 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................ 6 6 TEST INSTRUMENTS LIST ..................................................................................................................... 7 7 TEST RESULTS AND MEASUREMENT DATA ...................................................................................... 9 7.1 ANTENNA REQUIREMENT ..................................................................................................................... 9 7.2 RADIATED EMISSION METHOD ........................................................................................................... 10 7.2.1 Field Strength of The Fundamental Signal ................................................................................ 12 7.2.2 Spurious emissions and Band Edge .......................................................................................... 13 7.3 20DB OCCUPY BANDWIDTH .............................................................................................................. 17 8 TEST SETUP PHOTO ............................................................................................................................ 18 9 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 18 Report No.: GTSL2023050261F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 18 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203 Pass AC Power Line Conducted Emission 15.207 Not Applicable Field strength of the fundamental signal 15.249 (a) Pass Spurious emissions 15.249 (a) (d)/15.209 Pass Band edge 15.249 (d)/15.205 Pass 20dB Occupied Bandwidth 15.215 (c) Pass Remarks: 1. Test according to ANSI C63.10: …

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GTSL2023050261 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 1 Product Name: 7-1 wireless sensor Test Model No.: R53 Test Setup Photo Radiated Emission ------End------