2BKMOYXP01WIFI Thermohygrometer

Attestation Statements (September 4, 2024) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: 2BKMOYXP01) (Shenzhen Yanxing Industrial Co.,Ltd), the undersigned, hereby authorize (NEWENERGYER LIMITED) to act as our designated U.S. agent for service of process, (Shenzhen Yanxing Industrial 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. (NEWENERGYER LIMITED) accepts the responsibility to act as designated U.S. agent for service of process, provides 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. Applicant Information： Company name: Shenzhen Yanxing Industrial Co.,Ltd Contact Name: LUO QI MIN Address: 1804 Nanhuatong Building, 100 meters west of intersection of Ganli 2nd Road and Ganli 4th Road, Longgang District, Shenzhen, China Telephone No: 13538214502 Email: 13538214502 FRN: 0035877307 Signature [LUO QI MIN] U.S. Agent Information: Company Name: NEWENERGYER LIMITED Address: 1818 S Patton Ct, Denver, CO, 80219 Contact Name: CHUN LIU Telephone No: 213 289 5042 Email: [email protected] FRN: 0034665885 Signature [CHUN LIU]

(Shenzhen Yanxing Industrial Co.,Ltd) (September 4, 2024) 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: 2BKMOYXP01) [Shenzhen Yanxing Industrial 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, (Applicant signature) (Applicant printed name) LUO QI MIN (Shenzhen Yanxing Industrial Co.,Ltd) (September 4, 2024) 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: 2BKMOYXP01) [Shenzhen Yanxing Industrial 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, (Applicant signature) (Applicant printed name) LUO QI MIN

Shenzhen Yanxing Industrial Co.,Ltd Model Difference Data：September 4, 2024 Product description: WIFI Thermohygrometer Model name: YXP01, YXP02 Trade Name: WIOONI FCC ID: 2BKMOYXP01 All the model are the same circuit and RF module, only the name and appearance are different. Regards Sincerely Client’s signature : Client’s name / title : LUO QI MIN（Purchase） Contact information / address：1804 Nanhuatong Building, 100 meters west of intersection of Ganli 2nd Road and Ganli 4th Road, Longgang District, Shenzhen

Shenzhen Yanxing Industrial Co.,Ltd (September 4, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (WIFI Thermohygrometer / YXP01, YXP02 / FCC ID: 2BKMOYXP01) 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 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 required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Signature: Name: LUO QI MIN Title: Purchase

Shenzhen Yanxing Industrial Co.,Ltd (August 28, 2024) 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 (Shenzhen CTB Testing Technology 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: LUO QI MIN Title: Purchase

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 3 Model: YXP01 External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 3 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 3

FCC ID LABEL: Label Location: FCC ID: 2BKMOYXP01 Model No.: YXP01

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2BKMOYXP01 Applied procedures / limit According to FCC §15.247(i) and §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 Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna,R=20cm Test Result of RF Exposure Evaluation Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result 2.4G WIFI 802.11b&2 462 7±1 8 6.3096 1.3397 (1.27dBi) 0.0017 1 Pass BLE GFSK& LCH 1±1 2 1.5849 1.3709 (1.37dBi) 0.0004 1 Pass

1 Antenna Specification Manufacture：TUYA Product Name：CB3S Antenna Antenna Type：PCB Test Date：2021.04.16 Tested by：Jianwei Wang Approved by：Licco Antenna Test Report 2 Content 1.General Description ................................................................................ 3 2.Test Configurations ................................................................................. 4 2.1 Test Environment ........................................................................... 4 2.2 Test Equipment ............................................................................... 4 2.3 Test Principle .................................................................................. 4 3.Test Results ............................................................................................. 5 3.1 Gain and Efficiency ........................................................................ 5 3.2 Radiation Pattern ............................................................................ 6 4.Antenna Dimensions ............................................................................... 9 5.EUT Photo ............................................................................................... 9 6.Test Setup Photo .................................................................................... 10 3 1.General Description Manufacturer Hangzhou Tuya Information Technology Co.,Ltd Address Room 701,Building 3,More Center,No.87 GuDun Road, Hangzhou, Zhejiang,China Test Location Room 106, Building 3, Letong Science Park, No. 500, Qiuyi Road, Binjiang District, Hangzhou Product Name CB3S Antenna Product model CB3S Antenna Type PCB Antenna Test Items Gain; Efficiency; Radiation Pattern Test Frequency 2400-2500MHz Test Standard ANSI/IEEE Std 149-1979 4 2.Test Configurations 2.1 Test Environment Temperature (°C) 25 Humidity (%RH) 60 Atmospheric Pressure (kPa) 100.5 2.2 Test Equipment Test System TEM 24 Multi-probe Microwave Chamber Test Instrument Agilent E5071B 2.3 Test Principle 5 3.Test Results 3.1 Gain and Efficiency Frequency (MHz) Peak Gain (dBi) Efficiency (%) 2400 0.46 44.36 2410 0.71 45.71 2420 0.92 45.92 2430 0.91 45.6 2440 0.95 45.6 2450 0.93 45.29 2460 1.27 46.45 2470 1.37 46.88 2480 1.25 47.21 2490 1.24 46.67 2500 1.05 44.87 6 3.2 Radiation Pattern Phi 0 7 Phi 90 8 Theta 90 9 4.Antenna Dimensions 5.EUT Photo 10 6.Test Setup Photo

TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: WIFI Thermohygrometer FCC ID: 2BKMOYXP01 Trademark: WIOONI Model Number: YXP01, YXP02 Prepared For: Shenzhen Yanxing Industrial Co.,Ltd Address: 1804 Nanhuatong Building, 100 meters west of intersection of Ganli 2nd Road and Ganli 4th Road, Longgang District, Shenzhen Manufacturer: Shenzhen Yanxing Industrial Co.,Ltd Address: 1804 Nanhuatong Building, 100 meters west of intersection of Ganli 2nd Road and Ganli 4th Road, Longgang District, Shenzhen Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Aug. 14, 2024 Sample tested Date: Aug. 14, 2024 to Aug. 26, 2024 Issue Date: Aug. 26, 2024 Report No.: CTB240826017RFX Test Standards FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240826017RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 33 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ........................................................................................................................................ 3 2. TEST SUMMARY ........................................................................................................................... 4 3. MEASUREMENT UNCERTAINTY ................................................................................................. 5 4. PRODUCT INFORMATION AND TEST SETUP ............................................................................ 6 4.1 Product Information .......................................................................................................................... 6 4.2 Test Setup Configuration .................................................................................................................. 6 4.3 Support Equipment........................................................................................................................... 6 4.4 Channel List ..................................................................................................................................... 7 4.5 Test Mode ........................................................................................................................................ 7 4.6 Test Environment ............................................................................................................................. 7 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................................................... 8 5.1 Test Facility ...................................................................................................................................... 8 5.2 Test Instrument Used ....................................................................................................................... 8 6. AC POWER LINE CONDUCTED EMISSION ................................................................................ 11 6.1 Block Diagram Of Test Setup ......................................................................................................... 11 6.2 Limit ................................................................................................................................................ 11 6.3 Test procedure ............................................................................................................................... 11 6.4 Test Result ..................................................................................................................................... 13 7. RADIATED SPURIOUS EMISSION ............................................................................................. 14 7.1 Block Diagram Of Test Setup ......................................................................................................... 14 7.2 Limit ................................................................................................................................................ 14 7.3 Test procedure ............................................................................................................................... 15 7.4 Test Result ..................................................................................................................................... 16 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ............................................... 23 8.1 Block Diagram Of Test Setup ......................................................................................................... 23 8.2 Limit ................................................................................................................................................ 23 8.3 Test procedure ............................................................................................................................... 23 8.4 Test Result ..................................................................................................................................... 24 9. COUDUCTED OUTPUT POWER ................................................................................................. 26 9.1 Block Diagram Of Test …

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TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: WIFI Thermohygrometer FCC ID: 2BKMOYXP01 Trademark: WIOONI Model Number: YXP01, YXP02 Prepared For: Shenzhen Yanxing Industrial Co.,Ltd Address: 1804 Nanhuatong Building, 100 meters west of intersection of Ganli 2nd Road and Ganli 4th Road, Longgang District, Shenzhen Manufacturer: Shenzhen Yanxing Industrial Co.,Ltd Address: 1804 Nanhuatong Building, 100 meters west of intersection of Ganli 2nd Road and Ganli 4th Road, Longgang District, Shenzhen Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Aug. 14, 2024 Sample tested Date: Aug. 14, 2024 to Aug. 26, 2024 Issue Date: Aug. 26, 2024 Report No.: CTB240826018RFX Test Standards FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test Results PASS Remark: This is WIFI-2.4GHz band radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240826018RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 62 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ............................................................ 4 2. TEST SUMMARY ..................................................... 5 3. MEASUREMENT UNCERTAINTY ....................................... 6 4. PRODUCT INFORMATION AND TEST SETUP ........................... 7 4.1 Product Information ..................................................... 7 4.2 Test Setup Configuration ................................................ 7 4.3 Support Equipment ..................................................... 7 4.4 Channel List ........................................................... 8 4.5 Test Mode ............................................................. 8 4.6 Test Environment ....................................................... 8 5. TEST FACILITY AND TEST INSTRUMENT USED ......................... 9 5.1 Test Facility ............................................................ 9 5.2 Test Instrument Used ................................................... 9 6. AC POWER LINE CONDUCTED EMISSION ............................. 12 6.1 Block Diagram Of Test Setup ........................................... 12 6.2 Limit ................................................................. 12 6.3 Test procedure ........................................................ 12 6.4 Test Result ........................................................... 14 7. RADIATED SPURIOUS EMISSION ..................................... 15 7.1 Block Diagram Of Test Setup ........................................... 15 7.2 Limit ................................................................. 15 7.3 Test procedure ........................................................ 16 7.4 Test Result ........................................................... 17 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ........... 39 8.1 Block Diagram Of Test Setup ........................................... 39 8.2 Limit ................................................................. 39 8.3 Test procedure ........................................................ 39 8.4 Test Result ........................................................... 40 9. COUDUCTED OUTPUT POWER ....................................... 48 9.1 Block Diagram Of Test Setup ........................................... 48 9.2 Limit ................................................................. 48 9.3 Test procedure ........................................................ 48 9.4 Test Result ........................................................... 48 10. 6DB OCCUPIED BANDWIDTH ........................................ 49 10.1 Block Diagram Of Test Setup .......................................... 49 10.2 Limit ................................................................ 49 10.3 Test procedure ....................................................... 49 10.4 Test Result .......................................................... 50 11. POWER SPECTRAL DENSITY ........................................ 55 11.1 Block Diagram Of Test Setup .......................................... 55 11.2 Limit ................................................................ 55 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240826018RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 62 11.3 Test procedure ....................................................... 55 11.4 Test Result .......................................................... 56 12. ANTENNA REQUIREMENT ........................................... 61 13. EUT TEST SETUP PHOTOGRAPHS ................................... 62 (Note: N/A means not applicable) Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240826018RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 62 1. VERSION Report N o. Issue Date Description Approved CTB240826018RFX Aug. 26, 2024 Original Valid Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240826018RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 5 of 62 2. TEST SUMMARY The Product has been tested according to the following specifications: Test Item Test Requirement Test method Result AC Power Line Conducted Emission 47 C…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model: YXP01 Radiated Emission Below 1G Above 1G