2A99K-3390TX-CWIFI-Professional Weather Station

Attestation Statements (March 29, 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: 2A99K-3390TX-C ) (FUJIAN EMAX INTELLIGENT CO.LTD), the undersigned, hereby authorize (NEWENERGYER LIMITED) to act as our designated U.S. agent for service of process, (FUJIAN EMAX INTELLIGENT 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: FUJIAN EMAX INTELLIGENT CO.LTD Contact Name: James Shi Address: Building 5-6- 7,EMAX Intelligent Industrial Park, No. 30, Wisdom Avenue,Nanyu Town,High- tech Zone, Fuzhou,China Telephone No: 13538214502 Email: [email protected] FRN: 0033401910 Signature [James Shi] 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]

(FUJIAN EMAX INTELLIGENT CO.LTD) (March 29, 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: 2A99K-3390TX-C) [FUJIAN EMAX INTELLIGENT 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) James Shi (FUJIAN EMAX INTELLIGENT CO.LTD) (March 29, 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: 2A99K-3390TX-C) [FUJIAN EMAX INTELLIGENT 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) James Shi

FUJIAN EMAX INTELLIGENT CO.LTD (March 29, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (WIFI-Professional Weather Station / 3390TX-C / FCC ID: 2A99K-3390TX-C) 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: James Shi Title: Manager

FUJIAN EMAX INTELLIGENT CO.LTD (March 29, 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: James Shi Title: Manager

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 4 Model: 3390TX-C External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 4

2A99K-3390TX-C 2A99K-3390TX-C

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2A99K-3390TX-C 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 Note:dbm=dbuv/m-95.2+4.7=83.15-95.2+4.7=-7.35dBm(ERP), so the conduct peak power=-7.35- -6.84=-0.51dBm 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 433.9MHz 0±1 1 1.2589 0.207 (-6.84dBi) 0.00005 1 Pass

专业天线服务商 有限公司 WENZHOU ZHUOYUE SPRING CO.,LTD. 项目型号 测 审 核 日 期 天线测试报告 Antenna test report 2023-4-10 20*4.50.55 EM3390-T X 试 测试设备和测试环境 Test equipment and test environment 测试设备 Test equipment 无源指标 增益 效率 3D方向图 有源指标 TRP总辐射功率 TIS总接收灵敏度 探头微波暗室 频率：0.4GHz至6GHz 主要测试指标 测试设备 Test equipment Agilent E5071C矢量网络分析仪 频率：300 kHz至8.5GHz R&S CMW500 宽带无线通信测试仪 GSM/3G/4G WIFI/ Bluetooth NB-IoT 测试拍照 Test photos 天线驻波比 Antenna SWR 天线回波损耗 Antenna Return loss 天线增益与效率 Antenna gain and efficiency 天线 Freq(MHz) Efficiency (％) Gian(dBi) 432.9 MHz 5.59 -7.36 433.9 MHz 5.82 -7.08 434.9 MHz 5.93 -6.84 插入图片1 插入图片2 插入图片3 插入图片4 天线辐射方向图 Antenna Radiation Pattern 插入图片1 插入图片2 插入图片3 插入图片4 天线辐射方向图 Antenna Radiation Pattern 插入图片1 插入图片2 插入图片3 插入图片4 天线辐射方向图 Antenna Radiation Pattern 感谢您的支持！ Thanks for your support！

TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu Bin Mei / Director The test report is effective only with both signature and specialized stamp. This result(s) shown in this report r 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-Professional Weather Station FCC ID: 2A99K-3390TX-C Trademark: N/A Model Number: 3390TX-C Prepared For: FUJIAN EMAX INTELLIGENT CO.LTD Address: Building 5-6-7, EMAX Intelligent Industrial Park, No. 30, Wisdom Avenue, Nanyu Town, High-tech Zone, Fuzhou, China Manufacturer: FUJIAN EMAX INTELLIGENT CO., LTD Address: Building 5-6-7, EMAX Intelligent Industrial Park, No. 30, Wisdom Avenue, Nanyu Town, High-tech Zone, Fuzhou, China 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: Mar. 13, 2024 Sample tested Date: Mar. 13, 2024 to Mar. 22, 2024 Issue Date: Mar. 22, 2024 Report No.: CTB240322002RFX Test Standards FCC Part15.231 ANSI C63.10:2013 Test Results PASS Remark: This is 433MHz radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240322002RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 25 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 Test Mode ........................................................................................................................................ 7 4.5 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 ................................................................................ 10 6.1 Block Diagram Of Test Setup ......................................................................................................... 10 6.2 Limit ................................................................................................................................................ 10 6.3 Test procedure ............................................................................................................................... 10 6.4 Test Result ..................................................................................................................................... 11 7. RADIATED EMISSION ................................................................................................................. 12 7.1 Block Diagram Of Test Setup ......................................................................................................... 12 7.2 Limit ................................................................................................................................................ 12 7.3 Test procedure ............................................................................................................................... 13 7.4 Test Result ..................................................................................................................................... 14 8. DWELL TIME ................................................................................................................................ 20 8.1 Block Diagram Of Test Setup ......................................................................................................... 20 8.2 Limit ................................................................................................................................................ 20 8.3 Test procedure ............................................................................................................................... 20 8.4 Test Result ..................................................................................................................................... 21 9. OCCUPIED BANDWIDTH ............................................................................................................ 22 9.1 Block Diagram Of Test Setup ........................…

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

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model: 3390TX-C Radiated Emission Below 1G Above 1G