2BVC2-WHB-100THot Button Wireless Remote Control

NANOKEM co.,Ltd. Date: April 17, 2026 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 : 2BVC2-WHB-100T NANOKEM 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, CHOI JIN SOL NANOKEM co.,Ltd. Date: April 17, 2026 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 : 2BVC2-WHB-100T NANOKEM 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, CHOI JIN SOL

iCertifi Control Number - IC2026ASOP12272 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 27/03/2026 Ref: Attestation Statement Part 2.911(d)(7) Filing FCC ID: 2BVC2-WHB-100T NANOKEM co.,Ltd. certifies that, as of the dates of this application, Americas Compliance Consulting LLC dba iCertifi is our designated U.S. agent for service of process for the above referenced FCC ID. Manufacturer accepts to maintain an agent for no less than two year after the grantee has terminated all marketing and importation or the conclusion of any commission-related proceeding involving the equipment. iCertifi accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Americas Compliance Consulting LLC dba iCertifi FCC FRN: 0033399411 Address: 5809 US-2, Suite B, Albeni Plaza Priest River, Idaho 83856, United States Contact Person: Paul Preston Tel: +1 (866) 885-4575 Email: [email protected] Sincerely, NANOKEM co.,Ltd.Americas Compliance Consulting LLC dba iCertifi FRN: 0038197802FRN: 0033399411 CHOI JIN SOLPaul Preston [email protected]@icertifi.com +82-10-3948-9737+1 (866) 885-4575 Signature: Signature:

NANOKEM co.,Ltd. 49 Wolgok 2-gil, Cheongdo-eup, Cheongdo-gun, Gyeongsangbuk-do, Republic of Korea Date: April 17, 2026 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Hot Button Wireless Remote Control/ WHB-100T # FCC ID: 2BVC2-WHB-100T#) 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 (below list) required to be submitted with this application be permanently withheld from public review. Permanent Confidential Request -. Schematics -. Operational Description -. Block Diagram 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, CHOI JIN SOL / Engineer

NANOKEM co.,Ltd. 49 Wolgok 2-gil, Cheongdo-eup, Cheongdo-gun, Gyeongsangbuk-do, Republic of Korea Date: April 17, 2026 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Hot Button Wireless Remote Control / WHB-100T # FCC ID: 2BVC2-WHB-100T#) 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 (below list) required to be submitted with this application be short-term Confidentiality for a period of 180 days after grant is issued. Short-Term Confidential Request -. External Photos -. Internal Photos -. Test set-up photo -. User Manual SPECIFY REASON FOR REQUEST (i.e. These documents contain detailed system and equipment descriptions and related information about the product, which we considers to be proprietary, confidential, and a custom design and otherwise, would not release to the general public. Since this design is a basis from which future technological products will evolve, we feel that this information would be of benefit to our competitors, and that the disclosure of the information in these documents would give our competitors an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, CHOI JIN SOL / Engineer

NANOKEM co.,Ltd. 49 Wolgok 2-gil, Cheongdo-eup, Cheongdo-gun, Gyeongsangbuk-do, Republic of Korea Date: April 17, 2026 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 Ms. Chloe Lee/ General Manager of Eurofins KCTL 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, CHOI JIN SOL / Engineer

LabelLabel Location (bottom of device)

This test report shall not be reproduced, except in full, without the written approval * RF Exposure FCC ID: 2BVC2-WHB-100T 1. Regulation According to the KDB 447498 D01 V06, the following RF exposure evaluation shall to demonstrate RF exposure compliance. Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified, typically in the SAR measurement or SAR analysis report, by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting are required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops and tablets, etc. a) For 100 ㎒ to 6 ㎓ and test separation distances ≤ 50 ㎜, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, ㎽) / (min. test separation distance, ㎜)] ꞏ [√f(㎓)] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR,30 where ● f(㎓) is the RF channel transmit frequency in ㎓ ● Power and distance are rounded to the nearest ㎽ and mm before calculation ● The result is rounded to one decimal place for comparison ● The values 3.0 and 7.5 are referred to as numeric thresholds in step b) below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 ㎜, and for transmission frequencies between 100 ㎒ and 6 ㎓. When the minimum test separation distance is < 5 ㎜, a distance of 5 ㎜ according to 4.1 f) is applied to determine SAR test exclusion. b) For 100 ㎒ to 6 ㎓ and test separation distances > 50 ㎜, the 1-g and 10-g SAR test exclusion thresholds are determined by the following (also illustrated in Appendix B): 1) {[Power allowed at numeric threshold for 50 ㎜ in step a)] + [(test separation distance – 50 ㎜)ꞏ(f(㎒)/150)]} ㎽, for 100 ㎒ to 1500 ㎒ 2) {[Power allowed at numeric threshold for 50 ㎜ in step a)] + [(test separation distance – 50 ㎜)ꞏ10]} ㎽, for > 1500 ㎒ and ≤ 6 ㎓ c) For frequencies below 100 ㎒, the following may be considered for SAR test exclusion (also illustrated This test report shall not be reproduced, except in full, without the written approval in Appendix C): 1) For test separation distances > 50 ㎜ and < 200 ㎜, the power threshold at the corresponding test separation distance at 100 ㎒ in step b) is multiplied by [1 + log(100/f(㎒))] 2) For test separation distances ≤ 50 ㎜, the power threshold determined by the equation in c) 1) for 50 ㎜ and 100 ㎒ is multiplied by ½ 3) SAR measurement procedures are not established below 100 ㎒. When SAR test exclusion cannot be applied, a KDB inquiry is required to determine SAR evaluation requirements for any SAR test results below 100 ㎒ to be acceptable. 2. Result 2-1. Calculation Result of RF Exposure Mode Test frequency [㎒] Max. tune-up Power [㏈m] Conducted output power [㎽] Min. test separation distance [㎜] SAR test exclusion thresholds ≤ 3.0 for 1-g SAR ASK 433.92 -22.00 0.006 3 5.00 0.000 8 Note: 1. SAR test exclusion thresholds = [(max. power of channel, including tune-up tolerance, ㎽)/(min. test separation distance, ㎜)] ꞏ [√f(㎓)] 3. RF Exposure Compliance Issue Therefore, EUT is not required the SAR Evaluation.

CY003A [email protected] AntennaP/N:CY003A Frequency:315/433.92MHz FrequencyBandwidth:20MHz InputImpedence:50Ω Voltagestandingwaveratio:≤1.8 Gain:3dBi PolarizationType:Vertical LightningProtection:DCGROUND WorkingHumidity55%~75% WorkingTemperatureRange:-40~85°C Dimension Formoreinformationandassistance,pleasecontactusasfollows: CYWIRELESSTECHNOLOGYLIMITED Add:2705,ModernInternationalBuilding,JintianRoad,FutianDistrict, Shenzhen,GuangdongProvince,China Website：www.rficy.com Email:[email protected] All measurements were performed radiated and therefore additional All measurements were performed radiated and therefore additional antenna gain documentation is not required.

verify No.042952935213 Eurofins KCTL Co.,Ltd. 65, Sinwon-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Korea TEL: 82-70-4904-0113 FAX: 82-505-299-8311 www.kctl.co.kr Report No.: KR26-SRF0028 Page (2) of (23) KCTL-TIR001-003/7 (220705) KP25-08448 REPORT REVISION HISTORY Date Revision Page No 2026-04-07 Originally issued - This report shall not be reproduced except in full, without the written approval of Eurofins KCTL Co.,Ltd. This document may be altered or revised by Eurofins KCTL Co.,Ltd. personnel only, and shall be noted in the revision section of the document. Any alteration of this document not carried out by Eurofins KCTL Co.,Ltd. will constitute fraud and shall nullify the document. This test report is a general report that does not use the KOLAS accreditation mark and is not related to KS Q ISO/IEC 17025 and KOLAS accreditation. General remarks for test reports Statement concerning the uncertainty of the measurement systems used for the tests (may be required by the product standard or client) Internal procedure used for type testing through which traceability of the measuring uncertainty has been established: Procedure number, issue date and title: Calculations leading to the reported values are on file with the testing laboratory that conducted the testing. Statement not required by the standard or client used for type testing Eurofins KCTL Co.,Ltd. 65, Sinwon-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Korea TEL: 82-70-4904-0113 FAX: 82-505-299-8311 www.kctl.co.kr Report No.: KR26-SRF0028 Page (3) of (23) KCTL-TIR001-003/7 (220705) KP25-08448 CONTENTS 1. General information ......................................................................................................4 2. Device information ........................................................................................................4 2.1. Frequency/channel operations................................................................................5 2.2. RF power setting in TEST SW ................................................................................5 2.3. Duty Cycle Factor ...................................................................................................5 3. Antenna requirement ....................................................................................................6 4. Summary of tests ..........................................................................................................7 5. Measurement uncertainty .............................................................................................8 6. Test results ...................................................................................................................9 6.1. Transmission Time ..................................................................................................9 6.2. 20㏈ Bandwidth & Occupied Bandwidth .............................................................. 11 6.3. Field Strength of Fundamental and Spurious Emission .......................................... 13 7. Measurement equipment ............................................................................................ 23 Eurofins KCTL Co.,Ltd. 65, Sinwon-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Korea TEL: 82-70-4904-0113 FAX: 82-505-299-8311 www.kctl.co.kr Report No.: KR26-SRF0028 Page (4) of (23) KCTL-TIR001-003/7 (220705) KP25-08448 1. General information Client : NANOKEM co.,Ltd. Address : 49 Wolgok 2-gil, Cheongdo-eup, Cheongdo-gun, Gyeongsangbuk-do, Republic of Korea Manufacturer : NANOKEM co.,Ltd. Address : 49 Wolgok 2-gil, Cheongdo-eup, Cheongdo-gun, Gyeongsangbuk-do, Republic of Korea Laboratory : Eurofins KCTL Co.,Ltd. Address : 65, Sinwon-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Korea Accreditations : FCC Site Designation No: KR0040, FCC Site Registration No: 687132 VCCI Registration No. : R-20080, G-20078, C-20059, T-20056 CAB Identifier: KR0040 ISED Number: 8035A KOLAS No.: KT231 2. Device information Equipment under test : Hot Button Wireless Remote Control Model : WHB-100T Frequency range : 433.92 ㎒ Modulation technique : ASK Number of channels : 1 ch Power source : DC 3.0 V Antenna specification : Helical Antenna Antenna gain : 3 ㏈i Software version : 01 Hardware version : 01 Test device serial No. : 260401 Operation temperature : -20 °C ~ 70 °C Eurofins KCTL Co.,Ltd. 65, Sinwon-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Korea TEL: 82-70-4904-0113 FAX: 82-505-299-8311 www.kctl.co.kr Report No.: KR26-SRF0028 Page (5) of (23) KCTL-TIR001-003/7 (220705) KP25-08448 2.1. Frequency/channel operations This device contains the following capabilities: ASK(433.92 ㎑) Ch. Frequency (㎑) 01 433.92 Table 2.1.1. ASK 2.2. RF power setting in TEST SW Operation mode Test Program Power Setting ASK EUT Default 2.3. Duty Cycle Factor Test mode Period (ms) On time (ms) Duty cycle Duty Cycle Factor (dB) (Linear) (%) ASK 0.810 1.24 0.653 2 65.32 -3.70 Notes: 1. Duty cycle (Linear) = T On time / Period 2. DCF(Duty cycle factor) = 10log(1/duty cycle) 3. DCF is not compensated to average result if the duty cycle is more than 98% ASK Eurofins KCTL Co.,Ltd. 65, Sinwon-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Korea TEL: 82-70-4904-0113 FAX: 82-505-299-8311 www.kctl.co.kr Report No.: KR26-SRF0028 Page (6) of (23) KCTL-TIR001-003/7 (220705) KP25-08448 3. Antenna requirement Requirement of FCC part section 15.203: An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this section. Requirement of RSS-Gen Section 6.8: The applicant for equipment certification shall provide a list of all antenna types that may be used with the transmitter, where applicable (i.e. for transmitters with detachable antenna), indicating the maximum…

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