TX4-RE72Remote control Unit

Remote Solution Co., Ltd. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Remote Solution Co., Ltd. Address: 92, Chogokri, Nammyun, Kimchon City, Kyungbuk, 740-871, South Korea Product Name: Remote control Unit FCC ID: TX4-RE72 Model(s): RE72, RE71 2.911(d)(5)(i) Equipment Type We, Remote Solution Co., Ltd. (“the applicant”) certify that the equipment for which authorization is sought through certification is not: • Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. • Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Byung-Cheol, Kim Date: November 18, 2025 Title and Company name: Manager / Remote Solution Co., Ltd. NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Remote Solution Co., Ltd. 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Remote Solution Co., Ltd. Address: 92, Chogokri, Nammyun, Kimchon City, Kyungbuk, 740-871, South Korea Product Name: Remote control Unit FCC ID: TX4-RE72 Model(s): RE72, RE71 2.911(d)(5)(ii) Applicant filing We, Remote Solution Co., Ltd. (“the applicant”) certify that, as of the date of the filing of the application, the applicant is is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to § 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Byung-Cheol, Kim Date: November 18, 2025 Title and Company name: Manager / Remote Solution Co., Ltd. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Remote Solution Co., Ltd. 2.911 (d)(7)USA Agent v1.3 Section 2.911(d)(7) USA Agent for Service of Process Company name: Remote Solution Co., Ltd. Address: 92, Chogokri, Nammyun, Kimchon City, Kyungbuk, 740-871, South Korea Product Name: Remote control Unit Grantee code: TX4 Model(s): RE72, RE71 2.911(d)(7) USA Designated Agent for Service of Process We, Remote Solution Co., Ltd. (“the applicant”) designate Remote Solution America NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Remote Solution Co., Ltd. 2.911 (d)(7)USA Agent v1.3 USA Agent Company name: Remote Solution America Address: 222 Bridge Plaza South Suite 310, Fort Lee, New Jersey, 07024, United States FCC Grantee Code: 2BADO FRN No.: 0033456450 Contact Name: John Ahn Telephone No: (949) 891-2095 Email: [email protected] Applicant Company name: Remote Solution Co., Ltd. Address: 92, Chogokri, Nammyun, Kimchon City, Kyungbuk, 740-871, South Korea FCC Grantee Code: TX4 FRN No.: 0014561690 Contact Name: Byung-Cheol Kim Telephone No: +82-54-420-4517 Email: [email protected] Signature: Title: Sr. Program Manager Signature: Title: Manager Date: November 18, 2025 Date: November 18, 2025 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Remote Solution Co., Ltd. Date: November 18, 2025 RE: New Family Listing Declaration Please review the attached exhibits supporting our request for applying New Family Listing to the FCC ID: TX4-RE72 for Company Name: Remote Solution Co., Ltd. Product Description: Remote control Unit Base model: RE72 Additional model(s): RE71 The only difference between the base model and the additional model is as follows: Model Name Differences RE72 Basic Model RE71 The model is identical to basic model except for the Key Backlight, Ambient Light Sensor, Accelerometer IC, DC-DC Convertor. Should you have any questions, please contact us. Sincerely, Name: Byung-Cheol, Kim Title: Manager 0 Block Diagram RFP XTAL32M_P XTAL32M_N Antenna Filter Crystal Analog Bias OUT VDD_Audio VDD_AUDIO GPIO[02] Microphone XTALO XTALI RFIO 32MHz Xin Xout 1.8V Indicate Active "H" LED [RED] VDD Active "H" VDD SWDCLK SWDIO BOOT HCI TxD HCI RxD Reset VDD Program writing and debuger connector VBAT Alkaline AAA Battery x 2 Key Matrix 6 x 6 = 36 Keys GPIO[09] GPIO[10] GPIO[11] Enable IR LED KEY_IN0 GPIO09_IR_LED GPIO04_DCDC_EN_BOOT GPIO05_KEY_IN4_TXD GPIO06_KEY_IN5_RXD Active "L" Active "L" 2.0V ~ 3.2V KEY_IN1 KEY_IN2 KEY_IN3 KEY_IN4 KEY_IN5 KEY_OUT0 KEY_OUT1 KEY_OUT2 KEY_OUT3 Indicate LED [YG] Accelerometer IC Ambient Light Sensor DC-DC Convertor [3.3V] Key Backlight [White LED] x 11 GPIO[01] GPIO[00] GPIO[12] GPIO[08] GPIO[22] GPIO08_I2C_SDA GPIO11_I2C_SCL GPIO22_ACCELERO_INT GPIO[07] GPIO07_ALS_INT GPIO[21] GPIO21_BACKLIGHT_EN GPIO04_DCDC_EN_BOOT Active "H" GPIO[04] MIC_IN_P GPIO00_LEDRED_SWCLK GPIO01_LEDYG_SWDIO KEY_OUT4 KEY_OUT5 GPIO[13] GPIO[14] GPIO[15] GPIO[05] GPIO[06] GPIO[16] GPIO[17] GPIO[18] GPIO[19] GPIO[20] GPIO[03] MIC_IN_N GPIO10_KEY_IN0_RST 3.3V BLE : 2402 MHz ~ 2480 MHz PCB Pattern Antenna CO-1001HB RFP XTAL32M_P XTAL32M_N Antenna Filter Crystal Analog Bias OUT VDD_Audio VDD_AUDIO GPIO[02] Microphone XTALO XTALI RFIO 32MHz Xin Xout 1.8V Indicate Active "H" LED [RED] VDD Active "H" VDD SWDCLK SWDIO BOOT HCI TxD HCI RxD Reset VDD Program writing and debuger connector VBAT Alkaline AAA Battery x 2 Key Matrix 6 x 6 = 36 Keys GPIO[09] GPIO[10] GPIO[11] Enable IR LED KEY_IN0 GPIO09_IR_LED GPIO04_DCDC_EN_BOOT GPIO05_KEY_IN4_TXD GPIO06_KEY_IN5_RXD Active "L" Active "L" 2.0V ~ 3.2V KEY_IN1 KEY_IN2 KEY_IN3 KEY_IN4 KEY_IN5 KEY_OUT0 KEY_OUT1 KEY_OUT2 KEY_OUT3 Indicate LED [YG] GPIO[01] GPIO[00] GPIO[12] GPIO[08] GPIO[22] GPIO[07] GPIO[21] GPIO[04] MIC_IN_P GPIO00_LEDRED_SWCLK GPIO01_LEDYG_SWDIO KEY_OUT4 KEY_OUT5 GPIO[13] GPIO[14] GPIO[15] GPIO[05] GPIO[06] GPIO[16] GPIO[17] GPIO[18] GPIO[19] GPIO[20] GPIO[03] MIC_IN_N GPIO10_KEY_IN0_RST BLE : 2402 MHz ~ 2480 MHz PCB Pattern Antenna CO-1001HB RE72 (Pro)RE71(Basic) * RE72대비아래기능삭제됨으로부품DNP됨. Key Backlight, Ambient Light Sensr, Accelerometer IC, DC-DC Convertor DNP DNP 1 E-BOM RE72 (Pro)RE71(Basic) DNP DNP DNP DNP

Letter of Authorization Company: Remote Solution Co., Ltd. Address: 92, Chogokri, Nammyun, Kimchon City, Kyungbuk, 740-871, South Korea Product Name: Remote control Unit Model Number: RE72, RE71 FCC Identifier: TX4-RE72 We authorize MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Name: Byung-Cheol, Kim Date: November 18, 2025 Title: Manager Signature of applicant:

Remote Solution Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: November 18, 2025 Subject; Request for Confidentiality FCC ID: TX4-RE72 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Byung-Cheol, Kim Title: Manager

Page 1 of 1 IDENTIFICATION LABEL: PROPOSED LABEL The shall be permanently affixed in the rear side of the equipment

Page 1 of 6 Report No.: OT-25N-RWD-032 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) EMF TEST REPORT Test Report No. : OT-25N-RWD-032 Reception No. : 2509003114 Applicant : Remote Solution Co., Ltd. Address : 92, Chongokri, Nammyun, Kimchon, Kyungbuk, 740-871, South Korea Manufacturer : Remote Solution Co., Ltd. Address : 326-14, Apo-daero, Nam-myeon, Gimcheon-si, Gyeongsangbuk-do, 39662, South Korea Type of Equipment : Remote control Unit FCC ID. : TX4-RE72 Model Name : RE72 Multiple Model Name : RE71 Serial number : N/A Total page of Report : 6 pages (including this page) Date of Incoming : September 23, 2025 Date of issue : November 18, 2025 SUMMARY The equipment complies with the regulation; FCC 47 CFR Part 1, 1.1310 This test report only contains the result of a single test of the sample supplied for the examination. It is not a generally valid assessment of the features of the respective products of the mass-production. This test report is not associated with the accreditation granted by the Korean Laboratory Accreditation Scheme (KOLAS). Tested by Dong-Yeon, Han / Engineer ONETECH Corp. Reviewed by Tae-Ho, Kim / Chief Engineer ONETECH Corp. Approved by Jae-Ho, Lee / Director ONETECH Corp. Page 2 of 6 Report No.: OT-25N-RWD-032 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) CONTENTS Page 1. VERIFICATION OF COMPLIANCE ............................................................................................................................. 4 2. GENERAL INFORMATION ............................................................................................................................................ 5 2.1 PRODUCT DESCRIPTION ................................................................................................................................................. 5 2.2 ALTERNATIVE TYPE(S)/MODEL(S); ALSO COVERED BY THIS TEST REPORT. ................................................................ 5 3. EUT MODIFICATIONS .................................................................................................................................................... 5 4. RF EXPOSURE EVALUATION ...................................................................................................................................... 6 4.1 RF EXPOSURE CALCULATION ....................................................................................................................................... 6 4.2 EUT DESCRIPTION ......................................................................................................................................................... 6 4.3 TEST RESULT ................................................................................................................................................................. 6 4.3.1 Test data for Bluetooth LE ..................................................................................................................................... 6 Page 3 of 6 Report No.: OT-25N-RWD-032 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) Revision History Rev. No. Issue Report No. Issued Date Revisions Section Affected 0 OT-25N-RWD-032 November 18, 2025 Initial Release All Page 4 of 6 Report No.: OT-25N-RWD-032 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) 1. VERIFICATION OF COMPLIANCE Applicant : Remote Solution Co., Ltd. Address : 92, Chongokri, Nammyun, Kimchon, Kyungbuk, 740-871, South Korea Contact Person : Byung-Cheol Kim / Manager Telephone No. : +82-54-420-4517 FCC ID : TX4-RE72 Model Name : RE72 Brand Name : - Serial Number : N/A Date : November 18, 2025 EQUIPMENT CLASS DTS – DIGITAL TRNSMISSION SYSTEM E.U.T. DESCRIPTION Remote control Unit THIS REPORT CONCERNS Original Grant MEASUREMENT PROCEDURES KDB 447498 D01 General RF Exposure Guidance v06 TYPE OF EQUIPMENT TESTED Pre-Production KIND OF EQUIPMENT AUTHORIZATION REQUESTED Certification Modifications on the Equipment to Achieve Compliance None -. The above equipment was tested by ONETECH Corp. for compliance with the requirement set forth in the FCC Rules and Regulations. This said equipment in the configuration described in this report, shows the maximum emission levels emanating from equipment are within the compliance requirements. Page 5 of 6 Report No.: OT-25N-RWD-032 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) 2. GENERAL INFORMATION 2.1 Product Description The Remote Solution Co., Ltd., Model RE72 (referred to as the EUT in this report) is a Remote control Unit. The product specification described herein was obtained from product data sheet or user’s manual. Device Type Remote control Unit Temperature Range 0 °C ~ +50 °C Operating Frequency 2 402 MHz ~ 2 480 MHz MAX. RF OUTPUT POWER 1 Mbps 4.86 dBm 2 Mbps 4.74 dBm Number of Channel 40 Channels Modulation Type GFSK Antenna Type PCB Antenna Antenna Gain 2.42 dBi List of each Osc. or crystal Freq.(Freq. >= 1 MHz) 32 MHz Rated Supply Voltage DC 3.30 V 2.2 Alternative type(s)/model(s); also covered by this test report. -. The following lists consist of the added model a…

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Appendix Data 1. MINIMUM 6 DB BANDWIDTH ............................................................................................................. 2 2. MAXIMUM PEAK OUTPUT POWER ............................................................................................... 14 3. 100 KHZ BANDWIDTH OUTSIDE THE FREQUENCY BAND ...................................................... 20 4. RADIATED EMISSION ......................................................................................................................... 32 5. PEAK POWER SPECTRAL DENSITY ............................................................................................... 56 1 / 61 Test ItemNo.ModeFrquency 1 BLE 1M 2402 2 BLE 1M 2440 3 BLE 1M 2480 Test Parameters Antenna Test BandBLE 1M Ant0 x dB Bandwidth Verdict Pass Pass Pass 2 / 61 1 2 x dB Bandwidth x dB Bandwidth 3 / 61 3 x dB Bandwidth 4 / 61 Test ItemNo.ModeFrquency 1 BLE 2M 2402 2 BLE 2M 2440 3 BLE 2M 2480 Test Parameters Antenna Test BandBLE 2M Ant0 x dB Bandwidth Verdict Pass Pass Pass 5 / 61 1 2 x dB Bandwidth x dB Bandwidth 6 / 61 3 x dB Bandwidth 7 / 61 Test ItemNo.ModeFrquency 1 BLE 1M 2402 2 BLE 1M 2440 3 BLE 1M 2480 Test Parameters Antenna Test BandBLE 1M Ant0 OBW Verdict Pass Pass Pass 8 / 61 1 2 OBW OBW 9 / 61 3 OBW 10 / 61 Test ItemNo.ModeFrquency 1 BLE 2M 2402 2 BLE 2M 2440 3 BLE 2M 2480 Test Parameters Antenna Test BandBLE 2M Ant0 OBW Verdict Pass Pass Pass 11 / 61 1 2 OBW OBW 12 / 61 3 OBW 13 / 61 Test ItemNo.ModeFrquency 1 BLE 1M 2402 2 BLE 1M 2440 3 BLE 1M 2480 Test Parameters Antenna Test BandBLE 1M Ant0 Output Power Verdict Pass Pass Pass 14 / 61 1 2 Output Power Output Power 15 / 61 3 Output Power 16 / 61 Test ItemNo.ModeFrquency 1 BLE 2M 2402 2 BLE 2M 2440 3 BLE 2M 2480 Output Power Verdict Pass Pass Pass Test Parameters Ant0 BLE 2MBLE 2M Ant0 17 / 61 1 2 Output Power Output Power 18 / 61 3 Output Power 19 / 61 Test ItemNo.ModeFrquency 1 BLE 1M 2402 2 BLE 1M 2402 3 BLE 1M 2402 4 BLE 1M 2440 5 BLE 1M 2440 6 BLE 1M 2440 7 BLE 1M 2480 8 BLE 1M 2480 9 BLE 1M 2480 Test Parameters Antenna Test BandBLE 1M Ant0 100 kHz Bandwidth Verdict Pass Pass Pass Pass Pass Pass Pass Pass Pass 20 / 61 1 2 100 kHz Bandwidth 100 kHz Bandwidth 21 / 61 3 4 100 kHz Bandwidth 100 kHz Bandwidth 22 / 61 5 6 100 kHz Bandwidth 100 kHz Bandwidth 23 / 61 7 8 100 kHz Bandwidth 100 kHz Bandwidth 24 / 61 9 100 kHz Bandwidth 25 / 61 Test ItemNo.ModeFrquency 1 BLE 2M 2402 2 BLE 2M 2402 3 BLE 2M 2402 4 BLE 2M 2440 5 BLE 2M 2440 6 BLE 2M 2440 7 BLE 2M 2480 8 BLE 2M 2480 9 BLE 2M 2480 Test Parameters Antenna Test BandBLE 2M Ant0 100 kHz Bandwidth Verdict Pass Pass Pass Pass Pass Pass Pass Pass Pass 26 / 61 1 2 100 kHz Bandwidth 100 kHz Bandwidth 27 / 61 3 4 100 kHz Bandwidth 100 kHz Bandwidth 28 / 61 5 6 100 kHz Bandwidth 100 kHz Bandwidth 29 / 61 7 8 100 kHz Bandwidth 100 kHz Bandwidth 30 / 61 9 100 kHz Bandwidth 31 / 61 Test ItemNo.ModeChannelBandwitdhDetectorPolarization 1 BLE 1M 2402 5 MHz AVGHorizontal 2 BLE 1M 2402 5 MHz PEAKHorizontal 3 BLE 1M 2402 5 MHz AVGVertical 4 BLE 1M 2402 5 MHz PEAKVertical 5 BLE 1M 2480 5 MHz AVGHorizontal 6 BLE 1M 2480 5 MHz PEAKHorizontal 7 BLE 1M 2480 5 MHz AVGVertical 8 BLE 1M 2480 5 MHz PEAKVertical Restricted Band BLE 1M Ant0Antenna Test Parameters Test Band 32 / 61 1 2 Restricted Band Restricted Band 33 / 61 3 4 Restricted Band Restricted Band 34 / 61 5 6 Restricted Band Restricted Band 35 / 61 7 8 Restricted Band Restricted Band 36 / 61 Test ItemNo.ModeChannelBandwitdhDetectorPolarization Restricted Band1 BLE2M 2402 10 MHz AVGHorizontal Restricted Band2 BLE2M 2402 10 MHz PEAKHorizontal Restricted Band3 BLE2M 2402 10 MHz AVGVertical Restricted Band4 BLE2M 2402 10 MHz PEAKVertical Restricted Band5 BLE2M 2480 10 MHz AVGHorizontal Restricted Band6 BLE2M 2480 10 MHz PEAKHorizontal Restricted Band7 BLE2M 2480 10 MHz AVGVertical Restricted Band8 BLE2M 2480 10 MHz PEAKVertical AntennaAnt0 Test Parameters Test BandBLE2M 37 / 61 1 2 Restricted Band Restricted Band 38 / 61 3 4 Restricted Band Restricted Band 39 / 61 5 6 Restricted Band Restricted Band 40 / 61 7 8 Restricted Band Restricted Band 41 / 61 Test ItemNo.ModeFrquencyBandwidthDetectorHarmonicPolarization 1 BLE 1M 4804 5 MHz AVG2Horizontal 2 BLE 1M 4804 5 MHz PEAK2Horizontal 3 BLE 1M 4804 5 MHz AVG2Vertical 4 BLE 1M 4804 5 MHz PEAK2Vertical 5 BLE 1M 4880 5 MHz AVG2Horizontal 6 BLE 1M 4880 5 MHz PEAK2Horizontal 7 BLE 1M 4880 5 MHz AVG2Vertical 8 BLE 1M 4880 5 MHz PEAK2Vertical 9 BLE 1M 4960 5 MHz AVG2Horizontal 10 BLE 1M 4960 5 MHz PEAK2Horizontal 11 BLE 1M 4960 5 MHz AVG2Vertical 12 BLE 1M 4960 5 MHz PEAK2Vertical Harmonic Test Parameters Antenna Test BandBLE 1M Ant0 42 / 61 1 2 Harmonic Harmonic 43 / 61 3 4 Harmonic Harmonic 44 / 61 5 6 Harmonic Harmonic 45 / 61 7 8 Harmonic Harmonic 46 / 61 9 10 Harmonic Harmonic 47 / 61 11 12 Harmonic Harmonic 48 / 61 Test ItemNo.ModeFrquencyBandwidthDetectorHarmonicPolarization 1 BLE 2M 4804 10 MHz AVG2Horizontal 2 BLE 2M 4804 10 MHz PEAK2Horizontal 3 BLE 2M 4804 10 MHz AVG2Vertical 4 BLE 2M 4804 10 MHz PEAK2Vertical 5 BLE 2M 4880 10 MHz AVG2Horizontal 6 BLE 2M 4880 10 MHz PEAK2Horizontal 7 BLE 2M 4880 10 MHz AVG2Vertical 8 BLE 2M 4880 10 MHz PEAK2Vertical 9 BLE 2M 4960 10 MHz AVG2Horizontal 10 BLE 2M 4960 10 MHz PEAK2Horizontal 11 BLE 2M 4960 10 MHz AVG2Vertical 12 BLE 2M 4960 10 MHz PEAK2Vertical Harmonic Test Parameters Antenna Test BandBLE 2M Ant0 49 / 61 1 2 Harmonic Harmonic 50 / 61

Page 1 of 22 Report No.: OT-25N-RWD-031 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) RADIO PERFORMANCE TEST REPORT Test Report No. : OT-25N-RWD-031 Reception No. : 2509003114 Applicant : Remote Solution Co., Ltd. Address : 92, Chongokri, Nammyun, Kimchon, Kyungbuk, 740-871, South Korea Manufacturer : Remote Solution Co., Ltd. Address : 326-14, Apo-daero, Nam-myeon, Gimcheon-si, Gyeongsangbuk-do, 39662, South Korea Type of Equipment : Remote control Unit FCC ID. : TX4-RE72 Model Name : RE72 Multiple Model Name : RE71 Serial number : N/A Total page of Report : 22 pages (including this page) Date of Incoming : September 23, 2025 Date of issue : November 18, 2025 SUMMARY The equipment complies with the regulation; FCC PART 15 SUBPART C Section 15.247 This test report only contains the result of a single test of the sample supplied for the examination. It is not a generally valid assessment of the features of the respective products of the mass-production. This test report is not associated with the accreditation granted by the Korean Laboratory Accreditation Scheme (KOLAS). Tested by Dong-Yeon, Han / Engineer ONETECH Corp. Reviewed by Tae-Ho, Kim / Chief Engineer ONETECH Corp. Approved by Jae-Ho, Lee / Director ONETECH Corp. Page 2 of 22 Report No.: OT-25N-RWD-031 It should not be reproduced except in full, without the written approval of ONETECH Corp. OTC-TRF-RF-001(0) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599) CONTENTS Page 1. VERIFICATION OF COMPLIANCE ............................................................................................................................. 5 2. TEST SUMMARY .............................................................................................................................................................. 6 2.1 TEST ITEMS AND RESULTS ............................................................................................................................................. 6 2.2 ADDITIONS, DEVIATIONS, EXCLUSIONS FROM STANDARDS ........................................................................................... 6 2.3 RELATED SUBMITTAL(S) / GRANT(S) ............................................................................................................................ 6 2.4 PURPOSE OF THE TEST ................................................................................................................................................... 6 2.5 TEST METHODOLOGY .................................................................................................................................................... 6 2.6 TEST FACILITY ............................................................................................................................................................... 6 3. GENERAL INFORMATION ............................................................................................................................................ 7 3.1 PRODUCT DESCRIPTION ................................................................................................................................................. 7 3.2 ALTERNATIVE TYPE(S)/MODEL(S); ALSO COVERED BY THIS TEST REPORT. ................................................................ 7 4. EUT MODIFICATIONS .................................................................................................................................................... 7 5. SYSTEM TEST CONFIGURATION ............................................................................................................................... 8 5.1 JUSTIFICATION ............................................................................................................................................................... 8 5.2 PERIPHERAL EQUIPMENT .............................................................................................................................................. 8 5.3 MODE OF OPERATION DURING THE TEST ...................................................................................................................... 8 5.4 CONFIGURATION OF TEST SYSTEM ............................................................................................................................... 9 5.5 ANTENNA REQUIREMENT .............................................................................................................................................. 9 6. MEASUREMENT UNCERTAINTY ................................................................................................................................ 9 7. PRELIMINARY TEST .................................................................................................................................................... 10 7.1 AC POWER LINE CONDUCTED EMISSIONS TESTS ....................................................................................................... 10 7.2 GENERAL RADIATED EMISSIONS TESTS ..................................................................................................................... 10 8. MINIMUM 6 dB BANDWIDTH ..................................................................................................................................... 11 8.1 OPERATING ENVIRONMENT ......................................................................................................................................... 11 8.2 TEST SET-UP ................................................................................................................................................................. 11 8.3 TEST DATE ...........................................................................................................................…

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1 RE72-Antenna Approval sheet Sep 16, 2025 -PCB Overview & Matching Value -VSWR & Smith Chart / 3D Gain data -2D Radiation Pattern & Gain -3D Radiation pattern Rev 1.0 BydesignedBycheckedByapproved Kim.j.s- 2025.09.162025.09.16 JI Kwon 2 Specification 1. Features and Application： This product is for BT_BLE band ( 2402 ~ 2480 MHz ) 3 Measurement Process SWR / Return Loss Use Network Analyzer when measuring SWR/Return loss and selecting standard SPL. E5071B Agilent Network Analyzer AdditionalFeatures: 300 kHzto8.5 GHz 125 dBdynamicrangeattestport(typical) 9.6 us/pointsweepspeed 0.001 dBRMS tracenoise Integrated2-, 3-and 4-ports withbalancedmeasurements Fixtureembedding/de-embeddingand portcharacteristicimpedance conversion Frequency-offsetmodeforfrequencytranslateddevices. Built-inVisualBasicforApplications(VBA) MeasurementWizardAssistant(MWA) software 4 Measurement Process Gain Antenna gain is measured in the Anechoic Chamber oSize: 5.5(L) m×5.5(W) m×5.0(H) m oFrequencyrange: 700 MHzto8.0 GHz(FarField) 5 Electrical Characteristics This specification covers the dielectric pattern antenna RE72 used in Bluetooth ITEMSPECIFICATION Frequency Range2402 ~ 2480 MHz VSWR2.5 : 1 Max PolarizationLinear Frequency [MHz]24102430245024702480 Gain [dBi] Peak2.392.242.272.272.42 Average-4.05-4.30-4.12-4.26-4.19 Efficiency [%]39.3237.1938.7137.4938.14 Manufacturer : Remote Solution Name : RS ANT1 Peak[dBi] : +2.39 dBi 6 PCB Overview & Matching Value Manufacturer : Remote Solution Name : RS ANT1 7 VSWR & Smith Chart / 3D Gain data [ RS ANT1 ] 8 2D Radiation Pattern & Gain ( RS ANT1) 9 3D Radiation pattern ( RS ANT1 ) 10 Thank you