2BVGO-CTH001CliQ Thermostat

Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Mail: [email protected] Tel.: (978) 290-1050 Attestation Letter Date: 2026-08-12 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir/Madam, Our product CliQ Thermostat, model: CTH001(FCC ID: 2BVGO-CTH001), For US, the device only support/enable as below functions: 902.4-927.6MHz The other functions have been shielded by the manufacturer using the software and the end user cannot activate. Sincerely, Signature: Stephen Gordon Founder & CTO

Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Mail: [email protected] Tel.: (978) 290-1050 CFR 47 §2.911(d)(5)(i) Attestation Letter Attestation Letter Date: 2026-08-12 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: 2BVGO-CTH001 Walnut Technology Corporation 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, Signature Stephen Gordon Founder & CTO

Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Mail: [email protected] Tel.: (978) 290-1050 CFR 47 §2.911 (d)(5)(ii) Attestation Letter Attestation Letter Date: 2026-08-12 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: 2BVGO-CTH001 Walnut Technology Corporation 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. And our product does not use Kaspersky software information. Sincerely, Signature Stephen Gordon Founder & CTO

U.S. AGENT LETTER OF ATTESTATION Date: 2026-08-12 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7)(i) Filing FCC ID:2BVGO-CTH001 Walnut Technology Corporation (“the Applicant”) certifies that, as of the date of the filing of the application, Walnut Technology Corporation (U.S. agent). is our designated U.S. agent for service of process for the above referenced FCC ID. Walnut Technology Corporation (“the Applicant”) 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. Walnut Technology Corporation (U.S. agent) accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent and Applicant Information: Name: Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 FRN: 0038230066 Tel.: (978) 290-1050 Email: [email protected] Signed by (printed name):Stephen Gordon Signature:

Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Mail: [email protected] Tel.: (978) 290-1050 QA-FR-170-B 7/29/2014 FCC Authorization Date: 2026-08-12 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, Walnut Technology Corporation the undersigned, hereby authorizes Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Stephen Gordon Founder & CTO

Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Mail: [email protected] Tel.: (978) 290-1050 FCC Confidential Authorization Date: 2026-08-12 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2BVGO-CTH001 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Walnut Technology Corporation hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description • As well as short-term confidential treatment of information accompanying this application for a period of 180 days after grant is issued as outlined below: • Internal Photos • User’s Manual • External Photo • Test Set-up Photo The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: Stephen Gordon Founder & CTO

Note: This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA, or any agency of the Federal Government. The information marked “#” is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included but no need marked. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Tel: +86 755-26503290 Web: www.baclcorp.com.cn Rev:A/5.0 Page 1 of 6 TR-4-E-R052 TEST REPORT Applicant Name: Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Report Number: 2604V01292E-RF-00B FCC ID: 2BVGO-CTH001 Test Standard (s) 47 CFR §2.1091 Sample Description Product Name: CliQ Thermostat Model No.: CTH001 Trade Mark: CliQ Received Date: 2026-07-29 Report Date: 2026-08-21 Test Result: The EUT complied with the standards above. Prepared and Checked By: Approved By: Amanda Wei Bob.Liao Engineer Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) Report No.: 2604V01292E-RF-00B Rev:A/5.0 Page 2 of 6 TR-4-E-R052 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ................................................................................................................ 3 GENERAL INFORMATION ............................................................................................................................ 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ........................................................................ 4 OBJECTIVE ................................................................................................................................................... 4 TEST FACILITY .............................................................................................................................................. 4 MAXIMUM PERMISSIBLE EXPOSURE (MPE) ............................................................................................ 5 APPLICABLE STANDARD ................................................................................................................................. 5 CALCULATED RESULT.................................................................................................................................... 5 EXHIBIT A-EUT PHOTOGRAPHS ................................................................................................................ 6 Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) Report No.: 2604V01292E-RF-00B Rev:A/5.0 Page 3 of 6 TR-4-E-R052 DOCUMENT REVISION HISTORY Revision Number Report Number Description of Revision Date of Revision Rev.00 2604V01292E-RF-00B Original Report 2026-08-21 Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) Report No.: 2604V01292E-RF-00B Rev:A/5.0 Page 4 of 6 TR-4-E-R052 GENERAL INFORMATION Product Description for Equipment under Test (EUT) Product Name CliQ Thermostat Tested Model CTH001 Voltage Range # DC 3V for 2 * AAA battery Frequency Range 902.4-927.6 MHz Maximum Conducted Output Power(Peak) (actual test result) 9.56 dBm Antenna Specification # PCB Antenna, Gain: -2.11 dBi (It is provided by the applicant.) Sample Serial Number 3R0D-1(Assigned by BACL, Shenzhen, Guangming) Sample/EUT Status Good condition Objective This test report is in accordance with Part 2-Subpart J, Radiofrequency Radiation Exposure of the Federal Communication Commission rules. The tests were performed in order to determine compliance with 47 CFR §2.1091 rules. Test Facility The test site used by Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) to collect test data is located on the Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Accredited by American Association for Laboratory Accreditation (A2LA).The Certificate Number is 4297.01. Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) Report No.: 2604V01292E-RF-00B Rev:A/5.0 Page 5 of 6 TR-4-E-R052 MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to subpart 2.1091 systems operating under the provisions of this section shall be operated in a manner that ensures the public is not exposed to RF energy level in excess of the communication guidelines. Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (Minutes) 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f 2 ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density MPE Calculated Formulary: ● Predication of MPE limit at a given distance S = 2 4R PG  S = power density (in appropriate units, e.g. mW/cm 2 ) P = power input to the antenna (in appropriate units, e.g., mW). G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain. R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) Calculated Result Frequency (MHz) Antenna Gain # Tune up conducted power # Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric) (dBm) (mW) 902.4-927.6 -2.11 0.62 10 10 20 0.00122 0.6 Note 1: The tune-up power and antenna gain are declared by the applicant. To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 20cm from nearby persons. Res…

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The information marked ―#‖ is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included but no need marked. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Tel: +86 755-26503290 Web: www.baclcorp.com.cn Rev:A/5.0 Page 1 of 51 TR-4-E-R020 TEST REPORT Applicant Name: Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Report Number: 2604V01292E-RF-00A FCC ID: 2BVGO-CTH001 Test Standard (s) FCC PART 15.247 Sample Description Product Name: CliQ Thermostat Model No.: CTH001 Trade Mark: CliQ Received Date: 2026-07-29 Report Date: 2026-08-21 Test Result: The EUT complied with the standards above. Prepared and Checked By: Approved By: Amanda Wei Bob.Liao Engineer Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen, Guangming) Report No.: 2604V01292E-RF-00A Rev:A/5.0 Page 2 of 51 TR-4-E-R020 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ................................................................................................................ 4 GENERAL INFORMATION ............................................................................................................................ 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ........................................................................ 5 OBJECTIVE ................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................... 5 TEST FACILITY .............................................................................................................................................. 5 MEASUREMENT UNCERTAINTY ....................................................................................................................... 6 SYSTEM TEST CONFIGURATION ............................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION......................................................................................................... 7 EUT EXERCISE SOFTWARE AND POWER LEVEL # ............................................................................................ 7 SPECIAL ACCESSORIES AND EQUIPMENT MODIFICATIONS ............................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS ....................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................... 7 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................. 8 SUMMARY OF TEST RESULTS ................................................................................................................... 9 TEST EQUIPMENT LIST ............................................................................................................................. 10 ANTENNA REQUIREMENT......................................................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................... 11 ANTENNA CONNECTOR CONSTRUCTION ....................................................................................................... 11 RADIATED SPURIOUS EMISSIONS .......................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................... 12 EUT SETUP ................................................................................................................................................ 12 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .................................................................................. 13 TEST PROCEDURE ...................................................................................................................................... 14 CALCULATION ............................................................................................................................................. 14 TEST DATA ................................................................................................................................................. 15 20 DB EMISSION BANDWIDTH .................................................................................................................. 34 APPLICABLE STANDARD ............................................................................................................................... 34 TEST PROCEDURE ...................................................................................................................................... 34 TEST DATA ................................................................................................................................................. 34 CHANNEL SEPARATION TEST ...........................................................................................................…

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ANTENNA TEST REPORT Manufacturer: Walnut Technology Corporation Address: 233 Nahanton St Newton, MA 02459 Product Name: CliQ Thermostat Product Model: CTH001 Report Number: 2603V38761E-RF-OT Date Of Issue: 2026/8/6 Reviewed By : Title: Approved By: Luke Yuan OTA Test Supervisor Sun Zhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) Room 101 & 201, Building 2, 256 Pingdong Road, Dalang Town, Dongguan City, Guangdong, China Tel: +86-769-83085888 www.ccttt.com.cn China Certification ICT Co., Ltd (Dongguan) Report No.: 2603V38761E-RF Report Template: RF-OTA-ANT-A/0 Page 2 of 14 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the Room 101 & 201, Building 2, 256 Pingdong Road, Dalang Town, Dongguan City, Guangdong, China. Declarations China Certification ICT Co., Ltd (Dongguan) is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. Each test item follows the test standard(s) without deviation. China Certification ICT Co., Ltd (Dongguan) Report No.: 2603V38761E-RF Report Template: RF-OTA-ANT-A/0 Page 3 of 14 CONTENTS DOCUMENT REVISION HISTORY........................................................................................... 4 1. GENERAL INFORMATION .................................................................................................... 5 2. TEST CONFIGURATIONS ...................................................................................................... 6 2.1 TEST ENVIRONMENT ........................................................................................................................... 6 2.2 TEST EQUIPMENT ................................................................................................................................ 6 2.3 TEST SPECIFICATION ........................................................................................................................... 6 2.4 TEST UNCERTAINTY ............................................................................................................................ 7 2.5 TEST MEASUREMENT SYSTEM ............................................................................................................ 8 2.6 TEST SETUP .......................................................................................................................................... 8 2.6.1 Antenna Gain, Efficiency and Radiation Pattern Test Setup ............................................................ 8 3. TEST RESULTS ......................................................................................................................... 9 3.1 GAIN AND EFFICIENCY ........................................................................................................................ 9 3.2 RADIATION PATTERN ........................................................................................................................ 10 4. EUT PHOTOGRAPHS ............................................................................................................ 13 5. TEST SETUP PHOTOGRAPHS ............................................................................................ 14 China Certification ICT Co., Ltd (Dongguan) Report No.: 2603V38761E-RF Report Template: RF-OTA-ANT-A/0 Page 4 of 14 DOCUMENT REVISION HISTORY Revision Number Report Number Description of Revision Date of Revision 1.0 2603V38761E-RF Original Report 2026/8/6 China Certification ICT Co., Ltd (Dongguan) Report No.: 2603V38761E-RF Report Template: RF-OTA-ANT-A/0 Page 5 of 14 1. GENERAL INFORMATION Product Name: CliQ Thermostat Product Model: CTH001 Antenna Type: PCB Antenna Test Items: Gain; Efficiency; Radiation Pattern Test Frequency (MHz): 902,915,928 Sample Number: 3R3G-1 EUT Received Date: 2026-07-31 EUT Received Status: Good China Certification ICT Co., Ltd (Dongguan) Report No.: 2603V38761E-RF Report Template: RF-OTA-ANT-A/0 Page 6 of 14 2. TEST CONFIGURATIONS 2.1 Test Environment Temperature (°C) 27 Humidity (%RH) 58 Atmospheric Pressure (kPa) 100.2 Tester Luke Yuan Test Date 2026/8/3 2.2 Test Equipment Manufacturer Description Model Serial Number Calibration Date Calibrate Due Date R&S Vector Network Analyzer ZNB-8 1311601044104250 2026/2/7 2027/2/6 R&S Cross-Pol.Vivald i-ANT TC-TA18 200256 N/A N/A R&S Switch Controller OSP320 1528.3111K02\10 1442 N/A N/A R&S Switch Controller OSP320 1528.3105K03\10 1666 N/A N/A maturo Turntable controllers NCD/536/ 3082..01 N/A N/A N/A R&S Test Software AMS32 11.40.00 N/A N/A R&S Test System TS8991 N/A N/A N/A * Statement of Traceability: China Certification ICT Co., Ltd (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). 2.3 Test Specification IEEE Std 149-2021 China Certification ICT Co., Ltd (Dongguan) Report No.: 2603V38761E-RF Report Template: RF-OTA-ANT-A/0 Page 7 of 14 2.4 Test Uncertainty Otherwise required by the applicant or Product Regulations, Decision Rule in this report did not consider the uncertainty. The extended uncertainty given in this report is obtained by combining the standard uncertainty times the coverage factor K with the 95% confidence interval. Parameter Measurement Uncertainty Passive 1.88 dB VSWR 0.128 China Certification ICT Co., Ltd (Don…

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