2BK32-TRIMMTWOtrimmTwo

Ratio Co.,Ltd Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea Tel: +82-70-4278-4441 Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: September 19, 2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID : 2BK32-TRIMMTWO Ratio Co.,Ltd(“the applicant”) certifies that the equipment for which authorization is soughtis not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Manager / Jeonghee Jeong Ratio Co.,Ltd Ratio Co.,Ltd Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea Tel: +82-70-4278-4441 Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: September 19, 2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID : 2BK32-TRIMMTWO Ratio Co.,Ltd(“the applicant”) certifies that, as of the date of the filing of the application, the applicantis notidentified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Manager / Jeonghee Jeong Ratio Co.,Ltd

Ratio Co.,Ltd Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea Tel: +82-70-4278-4441 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: September 19, 2024 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID : 2BK32‐TRIMMTWO Applicant FRN : 0035944313 Ratio Co.,Ltd certifies that, as of the date of the filing of the application, FCC US AGENT, LLC. is our designated U.S. agent for service of process for the above referenced FCC ID. Ratio 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. FCC US AGENT, LLC. 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 Information: Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Contact Person: Tim Payne Phone: 708‐571‐3148 Email: [email protected] Sincerely, Ratio Co.,Ltd FCC US AGENT, LLC. Manager / Jeonghee Jeong TimPayne Rev 1/26/2023

Ratio Co.,Ltd Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea Tel: +82-70-4278-4441 Date: September 19, 2024 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID : 2BK32-TRIMMTWO Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: PERMANENT Exhibit TypeFile Name Part ListPart List.pdf Schematics Diagram(s)Schematics.pdf Operation descriptionOperational Description.pdf Block diagramBlock diagram.pdf And the above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Manager / Jeonghee Jeong Ratio Co.,Ltd

Ratio Co.,Ltd Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea Tel: +82-70-4278-4441 Date: September 19, 2024 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 FCC ID : 2BK32-TRIMMTWO To whom it may concern: I, the undersigned, hereby authorize Young-Jin, Lee of KES Co., Ltd. and hereafter referred to as KES Co., Ltd., to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by Young-Jin, Lee of KES Co., Ltd. on our behalf shall have the same effect as acts of our own. I, 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. 853(a). In authorizing KES Co., Ltd. as our agent, we still recognize that we are responsible to: a)comply with the relevant provisions of the certification program; b)make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c)make claims regarding certification only in respect of the scope for which certification has been granted; d)do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; e)upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f)use certification only to indicate the products are certified as being in conformity with specified standards; g)endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner; Ratio Co.,Ltd Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea Tel: +82-70-4278-4441 h)ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division; i)keep a record of all complaints made known to the us relating to the product’s compliance with requirements of the relevant standard and to make these records available to the Certification Division when requested; j)take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification; k)document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Manager / Jeonghee Jeong Ratio Co.,Ltd REMARK: 1.This authorization letter will be sent along with your application when filing with the Certification Division. 2.Please follow the format and type it on company letterhead and send original to us. 3.Authorized signature must be in agreement with grantee code contact in FCC database.

FCC ID : 2BK32-TRIMMTWO Page 1 of 2 External photos FCC ID : 2BK32-TRIMMTWO Page 2 of 2 Blank

FCC ID : 2BK32-TRIMMTWO Page 1 of 1 Label Location Label The device is so small that it is not practicable to place the statement specified under 15.19 statement request, the information required by this paragraph shall be placed in a prominent location in the User’s Manual.

FCC ID : 2BK32-TRIMMTWO Page 1 of 2 Internal photos FCC ID : 2BK32-TRIMMTWO Page 2 of 2 GPS Antenna Chip Antenna for LE 1 Mbps, ANT+

FCC ID: 2BK32-TRIMMTWO Page 1 of 1 RF exposure According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 ㎒ to 6 ㎓ at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(㎓)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, 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 Results Mode Frequency (㎓) Distance (mm) Max Average tune-up power (㏈m) Calculation value Exclusion Threshold (㏈m) (㎽) LE 1 Mbps 2.402 ~ 2.480 5 -6.00 0.251 0.079 ≤3.0 ANT+ 2.402 ~ 2.480 1.00 1.259 0.397

TEST REPORT Report No. : KES-EM242656 Page 1 / 24 KES Co., Ltd. #3002, #3503, #3701, 40, Simin-daero365beon-gil, Dongan- gu, Anyang-si, Gyeonggi-do, 14057, Republic of Korea Tel : +82-31-425-6200, Fax : +82-31-341-3838 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). 1. Client Applicant : Ratio Co.,Ltd. Applicant Address : Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea 2. Sample Description Product name : trimmTwo Model/Type No. : trimmTwo Variant Model : - Manufacturer : Ratio Co.,Ltd. Manufacturer Address : Rm. 506, 330, Seongam-ro, Mapo-gu, Seoul, Republic of Korea 3. FCC ID : 2BK32-TRIMMTWO 4. Date of Receipt : Aug. 01, 2024 5. Test date : Aug. 09, 2024 6. Date of Issue : Sep. 03, 2024 7. Test Results : In Compliance Tested by Reviewed by Seon Ho, Choi EMC Test Engineer Dong Hun, Jang EMC Technical Manager Report No. : KES-EM242656 Page 2 / 24 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). REPORT REVISION HISTORY Date Test Report No. Revision History Sep. 03, 2024 KES-EM242656 Issued This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. This document may be altered or revised by KES Co., Ltd. personnel only, and shall be noted in the revision section of the document. Any alteration of this document not carried out by KES Co., Ltd. will constitute fraud and shall nullify the document. Report No. : KES-EM242656 Page 3 / 24 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). TABLE OF CONTENTS 1.0 General Product Description ................................................................................................................... 4 1.1 Test Voltage & Frequency ....................................................................................................................... 5 1.2 Variant Model Differences ....................................................................................................................... 5 1.3 Device Modifications ............................................................................................................................... 5 1.4 Equipment Under Test ............................................................................................................................ 5 1.5 Support Equipments ............................................................................................................................... 5 1.6 External I/O Cabling ................................................................................................................................ 6 1.7 EUT Operating Mode(s) .......................................................................................................................... 6 1.8 Configuration ........................................................................................................................................... 7 1.9 Remarks when standards applied .......................................................................................................... 8 1.10 Calibration Details of Equipment Used for Measurement ....................................................................... 8 1.11 Test Facility ............................................................................................................................................. 8 1.12 Measurement Procedure ........................................................................................................................ 8 1.13 Laboratory Accreditations and Listings ................................................................................................... 9 2.0 Test Regulations ................................................................................................................................... 10 2.1 Conducted Emissions at Mains Power Ports ......................................................................................... 11 2.2 Radiated Electric Field Emissions(Below 1 ㎓) .................................................................................... 13 2.3 Radiated Electric Field Emissions(Above 1 ㎓) ................................................................................... 15 APPENDIX A – TEST DATA ............................................................................................................................ 17 Conducted Emissions at Mains Power Ports ........................................................................................... 17 Radiated Electric Field Emissions(Below 1 ㎓) ....................................................................................... 19 Radiated Electric Field Emissions(Above 1 ㎓) ....................................................................................... 20 APPENDIX B - Test Setup Photos and Configuration ..................................................................................... 22 Radiated Electric Field Emissions(Below 1 ㎓) ....................................................................................... 23 Radiated Electric Field Emissions(Above 1 ㎓) ....................................................................................... 24 Report No. : KES-EM242656 Page 4 / 24 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). 1.0 General Product Description Main Specifications of EUT are: Division Specificity Internal highest clock frequency Exceeded 108 ㎒ Power Rated Power Charge : DC 5 V (USB) Operating : DC 3.7 V (Battery, 200 mAh) Test Power AC 230 V, 50 ㎐ Wireless Function Bluetooth, GPS reception, ANT+ Port Charging Contact Port 1 EA Unused Port N/A Components EUT 1 EA Report No. : KES-EM242656 Page 5 / 24 KE…

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2.4GHz Mini Antenna, SMTP/N 2450AT18B100 Detail Specification: Page 1 of 5 *Efficiency based on Johanson's standard evaluation board ±± ±± ±± https://www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 4.0 2018 Johanson Technology, Inc. All Rights Reserved Want the layout file? Request it at: https://www.johansontechnology.com/ask-a-question High Frequency Ceramic Solutions Part Number 11/5/2018 Avg. Rad Efficiency* Let us help you with the antenna design, optimization, and tuning! 2450AT18B100 2400 - 2500 76% General Specifications Frequency (MHz) -45 to +125°C -45 to +125°C 3000pcs Return Loss (dB) Impedance Input Power Storage Temperature Operating Temperature Reel Quantity 50 Ω 2 Watts max. (CW) Recommended Storage Conditions of unused product on T&R and period. +5 to +35°C Humidity 45~75%RH 18 months max. Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. e.g. 2450AT18B100(E or S)100% Tin Packing Style Evaluation Board 2450AT18B100-EB1SMA (see page 2&3 for details) Bulk (loose) T & R Suffix = E or S Suffix = E P/N Suffix Mechanical Dimensions In L 0.1260.0083.200.2 W 0.0630.0081.600.2 T 0.0511.30 +0.1/-0.2+.004/-.008 a 0.0200.0080.500.2 Terminal Configuration Function FEED NC No. 1 2 mm e.g. 2450AT18B100E e.g. 2450AT18B100SSuffix = S Part Number Explanation Peak Gain (dBi typ.) Average Gain (dBi typ.) 0.5 -0.5 9.5 min. ① ② L W a T 2.4GHz Mini Antenna, SMTP/N 2450AT18B100 Detail Specification: Page 2 of 5 https://www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 4.0 2018 Johanson Technology, Inc. All Rights Reserved High Frequency Ceramic Solutions 11/5/2018 Mounting Considerations 1: Evaluation Board Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. To order a pre‐tuned 50Ω EVB with a female SMA connector click here: https://www.johansontechnology.com/request‐a‐sample Reference p/n: 2450AT18B100‐EB1SMA GND NO GND Units in mm ) ) 13.5 6.5 39.5 6.5 50Feed Line Antenna 4 ) Matching Component JTI P/Ns: L-14C2N7JV4 L-14C2N2JV4 * 2.6 4.2 1.6 1.9 0.4 2.7nH 1.2pF 3.3nH JTI P/N for Matching Circuit: Capacitor (1.2pF): 500R07S1R2BV4T Inductor (2.7nH): L-07C2N7SV6T Inductor (3.3nH): L-07C3N3SV6T *Line width should be designed to provied 50Ω impedance 2.4GHz Mini Antenna, SMTP/N 2450AT18B100 Detail Specification: Page 3 of 5 https://www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 4.0 2018 Johanson Technology, Inc. All Rights Reserved High Frequency Ceramic Solutions 11/5/2018 Mounting Considerations 1: Typical Electrical Performance (T=25°C) Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. Would you like the antenna layout? Have antenna tuning issues? Please contact us if you have any questions regarding the implementation of this antenna in your PCB's layout. We'll be happy to guide you to maximize the antenna's performance. Contact our applications engineers at: https://www.johansontechnology.com/ask‐a‐question 2.4GHz Mini Antenna, SMTP/N 2450AT18B100 Detail Specification: Page 4 of 5 https://www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 4.0 2018 Johanson Technology, Inc. All Rights Reserved High Frequency Ceramic Solutions 11/5/2018 Mounting Considerations 1: Antenna Performance Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. θ +Z (θ= 0°) +Y (θ= 90°) -Y -Z Typical 2D radiation patterns @ 2.44GHz YZ‐plane XZ‐plane XY‐plane Z Y Z X X Y φ +X (φ= 0°) -X +Y (φ= 90°) -Y θ +Z (θ= 0°) +X (θ= 90°) -X -Z 2.4GHz Mini Antenna, SMTP/N 2450AT18B100 Detail Specification: Page 5 of 5 https://www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 4.0 2018 Johanson Technology, Inc. All Rights Reserved https://www.johansontechnology.com/rohs-compliance Need help designing the antenna in? Use our antenna design services! https://www.johansontechnology.com/ipc-antenna-services We provide 2 free layout reviews and if you need us to tune and characterize the antenna on your product (inside our anechoic chamber) we can do that too. Small lab fee may apply. High Frequency Ceramic Solutions Antenna tuning, optimization, and validation services: For more antennas and to download measured S-parameters, go to: 11/5/2018 Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. RoHS Compliance Soldering Information For layout review contact our Applications Team at: MSL Info Packaging information https://www.johansontechnology.com/ipc-antenna-services https://www.johansontechnology.com/antennas https://www.johansontechnology.com/ipcsoldering-profile https://www.johansontechnology.com/msl-rating https://www.johansontechnology.com/tape-reel-packaging https://www.johansontechnology.com/ask-a-question

FCC ID : 2BK32-TRIMMTWOPage 1 of 1 Test setup photos Radiated testAC Conducted test Blank