2BHDK-MX-C10Intelligent lock

Attestation Statements (July 3, 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: 2BHDK-MX-C10) (Chongqing Meixin. Masson Door Industry Ltd), the undersigned, hereby authorize (NEWENERGYER LIMITED) to act as our designated U.S. agent for service of process, (Chongqing Meixin. Masson Door Industry 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: Chongqing Meixin. Masson Door Industry Ltd Contact Name: zhou qin Address: No.56, Baihe Road, Nanping Economic and Technological Development Zone, Nanan District, Chongqing, China Telephone No: 13538214502 Email: [email protected] FRN: 0035634005 Signature [zhou qin] 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]

(Chongqing Meixin. Masson Door Industry Ltd) (July 3, 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: 2BHDK-MX-C10) [Chongqing Meixin. Masson Door Industry 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) zhou qin (Chongqing Meixin. Masson Door Industry Ltd) (July 3, 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: 2BHDK-MX-C10) [Chongqing Meixin. Masson Door Industry 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) zhou qin

Chongqing Meixin. Masson Door Industry Ltd (July 3, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Intelligent lock / MX-C10 / FCC ID: 2BHDK-MX-C10) 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: zhou qin Title: Certification manager

Chongqing Meixin. Masson Door Industry Ltd (July 3, 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: zhou qin Title: Certification manager

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 4 Model: MX-C10 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

FCC ID LABEL: Label Location: FCC ID: 2BHDK-MX-C10 Model No.: MX-C10

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2BHDK-MX-C10 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 BLE GFSK& LCH -5±1 -4 0.3981 1.5066 (1.78dBi) 0.0001 1 Pass

Product specifation 1.Technical indicators of products Frequency Range (MHz) 2400-2500 Band Width(MHz) 100 Impedance (Q) 50 VSWR 1. 91 MAX Return Loss (dB) -15. 3 Peak Gain(dBi) 1. 78 Polarization Linear Vertical Antenna Material PCB Operating Temp (°C) —20〜65 Storage Temp (C ) —30〜75 2.Product picture Manufacture: Guangdong Yunlock Intelligent Technology Co., LTD Address: The 9th floor, Building P, Nanshui Industrial Park, Sanjiao Town, Zhongshan City, China 3. Return Loss (EES}® -6.00 -8.50 -11.00 -13.50 -16 00 Name X Y ml 2.4500 -15.3246 m2 2 3803 -10.0562 m3 2 5000 -10.0345 Curve Info ----- dB(St(T1,T1)) Setup 1 : Sweep Name Ddta(X) Ddta(Y) Slop") lnvSlope(Y) d(m2 m3) 0.1197 0.0217 0.1811 5.5203 Freq [GHz] 2.80 3.00 4. VSWR 120.00 100.00 — 80.00 — ( L ± x d M S > 60.00 — Name X Y ml 2.4500 1.4134 m2 2 4000 1 6651 m3 2.5000 1.9196 Curve Info ------ VSWRt(T1) Setup 1 : Sweep H= , 4.6fnm , S='1.1mm , Name Delta(X) Ddta(Y) Slope(Y) lnvSlope(Y) d(m2,m3) 0.1000 0.2545 2.5448 0.3930 40.00 20 00 6. 3D gain pattern dB(GainTotal) 2.6086e+000 1.4755e+000 3.^2516-001 - 7.9053e-001 - 1.9236e+000 - 3.0566e+000 T. 1897e+000 - 5.3227e+000 - 6.^5576+000 - 7.5888e+000 - 8.7218e+000 - 9.85^86+000 - 1.0988e+001 - 1.21216+001 - 1.325^6+001 - 1.43878+001 - 1.55206+001 7. E ,h plan Curve Info ---dB(GainTotal) Setup 1 : LastAdaptive Freq=245GHz" Ph 1=1X1 eg, ------ dB(GainTotal) Setupl : LastAdaptive Freq=245GHz~ Phi=~9Odeg' 90 -180 Radiation Pattern 2 Curve Info ------dB(GainTotal) Setup 1 : LastAdaptive Freq=245GHz 1 Thetan^deg'

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: Intelligent lock FCC ID: 2BHDK-MX-C10 Trademark: N/A Model Number: MX-C10 Prepared For: Chongqing Meixin. Masson Door Industry Ltd Address: No.56, Baihe Road, Nanping Economic and Technological Development Zone, Nanan District, Chongqing, China Manufacturer: Guangdong Yunlock Intelligent Technology Co., LTD Address: The 9th floor, Building P, Nanshui Industrial Park, Sanjiao Town, Zhongshan City, 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: Dec. 12, 2023 Sample tested Date: Dec. 12, 2023 to Dec. 26, 2023 Issue Date: Dec. 26, 2023 Report No.: CTB231226002RF 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.: CTB231226002RF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 35 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 .................................................................................. 10 6.1 Block Diagram Of Test Setup ........................................................................................................... 10 6.2 Limit .................................................................................................................................................. 10 6.3 Test procedure ................................................................................................................................. 10 6.4 Test Result ....................................................................................................................................... 12 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…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 2 Model: MX-C10 Radiated Emission Below 1G Above 1G Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 2 Conducted emissions