2A89X-CHOREIKING20Choreiking

FCC Information to User This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is con-nected. • Consult the dealer or an experienced radio/TV technician for help. Caution Modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. FCC Compliance Information : This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation This device(M/N: Cheoriking 2.0) has been tested and should be used with below antenna: Antenna Type Model No. Antenna Gain Manufacturer PCB Antenna MDBT50Q-P 0.41 dBi Raytac Corporation

GOGOTAK INC. 2F, 18, Jindari-ro, Nam-gu, Gwangju, Republic of Korea Nov 30, 2022 Applicant: GOGOTAK INC. Model Name: Choreiking 2.0 To. Whom it may concern: I . This product(M/N: Choreiking 2.0) is not operate the BLE 2Mbps and Zigbee from RF module(M/N: MDBT50Q). This product is only operate BLE 1Mbps. II . Installed BLE module(FCC ID: SH6MDBT50Q / M/N: MDBT50Q) is the design, hardware and implementation are exactly same with original. Sincerely, KIM SANG GYUNG / CEO

GOGOTAK INC. 2F, 18, Jindari-ro, Nam-gu, Gwangju, Republic of Korea Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2A89X- CHOREIKING20 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: Exhibit Type File Name Block Diagram Schematics Operational Description Part List [Choreiking 2.0] BLK [Choreiking 2.0] SCH [Choreiking 2.0] OpDes [Choreiking 2.0] Part List 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. 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); Exhibit Type File Name External Photos Internal Photos Test Setup Photos Manual [Choreiking 2.0] EXT Photo [Choreiking 2.0] INT Photo [Choreiking 2.0] Test Setup Photo [Choreiking 2.0] Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. Sincerely, KIM SANG GYUNG / CEO

GOGOTAK INC. 2F, 18, Jindari-ro, Nam-gu, Gwangju, Republic of Korea Nov 25, 2022 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Letter of Authorization We, the undersigned, hereby authorize Yong-Min, Won of EMC Labs Co., Ltd. to act on our behalf in all manners relating to application for equipment authorization for FCC ID: 2A89X-CHOREIKING20 including signing of all documents relating to these matters. Any and all acts carried out by Yong-Min, Won of EMC Labs Co., Ltd. on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from GOGOTAK INC. “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).” Sincerely, KIM SANG GYUNG / CEO

USB Port (5pin _ Charging Only)

GOGOTAK INC. M/N: Choreiking 2.0 FCC ID: 2A89X-CHOREIKING20 Choreiking 2.0_Label & Location Label location –Rear

Internal BT Module Battery BLE Antenna

Model Name : FCC ID : (mm)(dBm)(dB)(dBm)(mW) 24027.668.667.353.00PASS 24427.858.857.673.00PASS 24807.908.907.763.00PASS BT LE 1Mbps 5.00± 1.00 2.2768 2.3983 2.4449 Standalone SAR Test exclusion thresholds for 100MHz to 6GHz at test separation distance ≤ 50 mm LimitResultModulation Frequency (MHz) Min. Test separation distance Measured Maximum Average power Tune-up tolerance Max. Power with tune-up tolerance 2A89X-CHOREIKING20Separation distance : 5.0 mm MPE Calculation KDB 447498 - 4.3.1 a) For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where - f(GHz) is the RF channel transmit frequency in GHz - Power and distance are rounded to the nearest mW and mm before calculation - The result is rounded to one decimal place for comparison Choreiking 2.0Device Category : Portable device

34 7.2.MDBT50Q-P 35

Report No.: E2/2018/50091 Page 1 of 167 Unless otherwise stated the results shown in this test report refer only to the sample(s) tested and such sample(s) are retained for 90 days only. 除非另有說明，此報告結果僅對測試之樣品負責，同時此樣品僅保留90天。本報告未經本公司書面許可，不可部份複製。 This document is issued by the Company subject to its General Conditions of Service printed overleaf, available on request or accessible at www.sgs.com/terms_and_conditions.htm and, for elec- tronic format documents, subject to Terms and Conditions for Electronic Documents at www.sgs.com/terms_e-document.htm. Attention is drawn to the limitation of liability, indemnification and jurisdiction issues defined therein. Any holder of this document is advised that information contained hereon reflects the Company’s findings at the time of its intervention only and within the limits of Client’s instructions, if any. The Company’s sole responsibility is to its Client and this document does not exonerate parties to a transaction from exercising all their rights and obligations under the transaction documents. This document cannot be reproduced except in full, without prior written approval of the Company. Any unauthorized alteration, forgery or falsification of the content or ap- pearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. SGS Taiwan Ltd. No.134,WuKungRoad,NewTaipeiIndustrialPark,WukuDistrict,NewTaipeiCity,Taiwan24803/新北市五股區新北產業園區五工路134號 台灣檢驗科技股份有限公司 t (886-2) 2299-3279 f (886-2) 2298-0488 www.tw.sgs.com Member of SGS Group ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT INTENTIONAL RADIATOR CERTIFICATION TO FCC PART 15 SUBPART C REQUIREMENT OF Applicant: Raytac Corporation 5F, No.3, Jiankang Rd., Zhonghe Dist., New Taipei City, 235, Taiwan Product Name: Bluetooth Low Energy & IEEE 802.15.4 Combo Module Brand Name: Raytac Model No.: MDBT50Q, MDBT50Q-1M, MDBT50Q-P1M, MDBT50Q-U1M Model Difference: Different Antenna Type FCC ID: SH6MDBT50Q Report Number: E2/2018/50091 FCC Rule Part: §15.247, Cat: DTS Issue Date: Jul. 05, 2018 Date of Test: May 31, 2018 ~ Jun. 28, 2018 Date of EUT Received: May 31, 2018 We hereby certify that: The above equipment was tested by SGS Taiwan Ltd. Electronics & Communication Laboratory The test data, data evaluation, test procedures, and equipment configura- tions shown in this report were made in accordance with the procedures given in ANSI C63.10:2013 and the energy emitted by the sample EUT tested as described in this report is in compliance with conducted and radiated emission limits. The test results of this report relate only to the tested sample identified in this report. Tested By: Vito Pei / Sr. Engineer Approved By: Jim Chang / Manager Report No.: E2/2018/50091 Page 2 of 167 Unless otherwise stated the results shown in this test report refer only to the sample(s) tested and such sample(s) are retained for 90 days only. 除非另有說明，此報告結果僅對測試之樣品負責，同時此樣品僅保留90天。本報告未經本公司書面許可，不可部份複製。 This document is issued by the Company subject to its General Conditions of Service printed overleaf, available on request or accessible at www.sgs.com/terms_and_conditions.htm and, for elec- tronic format documents, subject to Terms and Conditions for Electronic Documents at www.sgs.com/terms_e-document.htm. Attention is drawn to the limitation of liability, indemnification and jurisdiction issues defined therein. Any holder of this document is advised that information contained hereon reflects the Company’s findings at the time of its intervention only and within the limits of Client’s instructions, if any. The Company’s sole responsibility is to its Client and this document does not exonerate parties to a transaction from exercising all their rights and obligations under the transaction documents. This document cannot be reproduced except in full, without prior written approval of the Company. Any unauthorized alteration, forgery or falsification of the content or ap- pearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. SGS Taiwan Ltd. No.134,WuKungRoad,NewTaipeiIndustrialPark,WukuDistrict,NewTaipeiCity,Taiwan24803/新北市五股區新北產業園區五工路134號 台灣檢驗科技股份有限公司 t (886-2) 2299-3279 f (886-2) 2298-0488 www.tw.sgs.com Member of SGS Group Revision History Report Number Revision Description Effected Page Issue Date Revised By E2/2018/50091 Rev.00 Initial creation of document All Jul. 05, 2018 Violetta Tang Report No.: E2/2018/50091 Page 3 of 167 Unless otherwise stated the results shown in this test report refer only to the sample(s) tested and such sample(s) are retained for 90 days only. 除非另有說明，此報告結果僅對測試之樣品負責，同時此樣品僅保留90天。本報告未經本公司書面許可，不可部份複製。 This document is issued by the Company subject to its General Conditions of Service printed overleaf, available on request or accessible at www.sgs.com/terms_and_conditions.htm and, for elec- tronic format documents, subject to Terms and Conditions for Electronic Documents at www.sgs.com/terms_e-document.htm. Attention is drawn to the limitation of liability, indemnification and jurisdiction issues defined therein. Any holder of this document is advised that information contained hereon reflects the Company’s findings at the time of its intervention only and within the limits of Client’s instructions, if any. The Company’s sole responsibility is to its Client and this document does not exonerate parties to a transaction from exercising all their rights and obligations under the transaction documents. This document cannot be reproduced except in full, without prior written approval of the Company. Any unauthorized alteration, forgery or falsification of the content or ap- pearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. SGS Taiwan Ltd. No.134,WuKungRoad,NewTaipeiIndustrialPark,WukuDistrict,NewTaipeiCity,Taiwan24803/新北市五股區新北產業園區五工路134號 台灣檢驗科技股份有限公司 t (886-2) 2299-3279 f (886-2) 2298-0488 www.tw.sgs.com Member of SGS Group Table of Contents 1 GENERAL INFORMATION ..............…

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Below 30 MHz Below 1 GHz Above 1 GHz Conducted Emission