2A9SGSRS03Digital Refractometer

FHIKOREA.Co.,Ltd 6F(Samwoo Building, Jamwon-dong, Jamwon-dong), 53, Gangnam-daero 99- gil, Seocho-gu, Seoul, Republic of Korea Tel. +82-70-5158-5165 Fax +82-2-703-7791 December 19, 2022 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 In re : FHIKOREA.Co.,Ltd FCC Application for FCC ID : 2A9SGSRS03 To whom it may concern: We, the undersigned, hereby attest to the fact that we will apply the Supplier’s Declaration of Conformity procedure to the class B computer peripheral portion of this composite filing. Best Regards, Seok Ho Ko / Marketing Manager FHIKOREA.Co.,Ltd

FHIKOREA.Co.,Ltd 6F(Samwoo Building, Jamwon-dong, Jamwon-dong), 53, Gangnam-daero 99-gil, Seocho-gu, Seoul, Republic of Korea Tel. +82-70-5158-5165 Fax +82-2-703-7791 December 19, 2022 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 LETTER OF AUTHORIZATION To whom it may concern: We, the undersigned, hereby authorize LTA Co., Ltd., to act on our behalf in all manners relating to application for equipment authorization for FCC ID: 2A9SGSRS03 including signing of all documents relating to these matters. Any and all acts carried out by LTA Co., Ltd., on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from FHIKOREA.Co.,Ltd LTA Co.,LTD. (Contact Person) Contact name: Ja-Beom Koo Position: Manager Phone:(82)31-323-6008 E- mail: [email protected] Best Regards, Seok Ho Ko / Marketing Manager FHIKOREA.Co.,Ltd

FHIKOREA.Co.,Ltd 6F(Samwoo Building, Jamwon-dong, Jamwon-dong), 53, Gangnam-daero 99- gil, Seocho-gu, Seoul, Republic of Korea Tel. +82-70-5158-5165 Fax +82-2-703-7791 December 19, 2022 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 In re : FHIKOREA.Co.,Ltd FCC ID : 2A9SGSRS03 Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules (CFR 47), FHIKOREA.Co.,Ltd hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA 04-1705. This provision will give FHIKOREA.Co.,Ltd temporary confidentiality of commercially sensitive information prior to product release. The requested Confidential and Temporary Confidential exhibits are listed as follows: Exhibit Type File Name CONFIDENTIAL Schematics CONF APPENDIX 2A9SGSRS03 SCH DIA.pdf Parts list CONF APPENDIX 2A9SGSRS03 PL.pdf Block diagram CONF APPENDIX 2A9SGSRS03 BLK DIA.pdf Operational description CONF APPENDIX 2A9SGSRS03 OpDes.pdf SHORT-TERM CONFIDENTIAL External Photos SHORT-TERM CONF 2A9SGSRS03EXT Photo.pdf Internal Photos SHORT-TERM CONF 2A9SGSRS03 INT Photo.pdf Te s t-Setup Photos SHORT-TERM CONF 2A9SGSRS03 Test Photo.pdf User’s Manual SHORT-TERM CONF 2A9SGSRS03 Manual.pdf The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be made public before the date of the Grant for this application. Best Regards, Seok Ho Ko / Marketing Manager FHIKOREA.Co.,Ltd

FCC ID: 2A9SGSRS03 Front Rear Copyright ○ c 2022, LTA Co., Ltd .Page 1 of 4 FCC ID: 2A9SGSRS03 Side Side Copyright ○ c 2022, LTA Co., Ltd .Page 2 of 4 FCC ID: 2A9SGSRS03 Side Side Copyright ○ c 2022, LTA Co., Ltd .Page 3 of 4 FCC ID: 2A9SGSRS03 Label Position Copyright ○ c 2022, LTA Co., Ltd .Page 4 of 4

FCC ID: 2A9SGSRS03 SAMPLE LABEL & LOCATION EUT Rear position FHIKOREA.Co.,Ltd Model : SRS03 Rated Voltage : DC 3.0 V FCC ID : 2A9SGSRS03 Made in Korea Copyright Ⓒ 2022, LTA Co., Ltd.

FCC ID: 2A9SGSRS03 MainBoard–Front MainBoard–Rear Copyright ○ c 2022, LTA Co., Ltd. Page 1 of 3 FCC ID: 2A9SGSRS03 Internal Copyright ○ c 2022, LTA Co., Ltd. Page 2 of 3 FCC ID: 2A9SGSRS03 ANTENNA(RFID Pattern Ant 40 * 25 mm) Copyright ○ c 2022, LTA Co., Ltd. Page 3 of 3

Ref. No.: LR500112212A 4, Songjuro236Beon-gil, Yangji-myeon, Cheoin-gu Yong-in-si, Gyeonggi-do, Korea 17159 Tel: +82-31-323-6008 Fax: +82-31-323-6010 http://www.ltalab.com Dates of Tests: July 18 ,2022 ~ December 16 ,2022 Test Report S/N: LR500112212A Test Site : LTA CO., LTD. CERTIFICATION OF COMPLIANCE FCC ID. APPLICANT Manufacturing Description : Digital Refractometer Manufacturer : FHIKOREA.Co.,Ltd Model name : SRS03 Variant Model name : SRC02 Test Device Serial No.: : Identical prototype Rule Part(s) : FCC Part 15 Subpart C ; ANSI C63.10 - 2013 Frequency Range : 13.56 MHz Data of issue : December 19 ,2022 This test report is issued under the authority of: The test was supervised by: Ja-Beom Koo, Manager Eun-Hwan Jung, Test Engineer This test result only responds to the tested sample. It is not allowed to copy this report even partly without the allowance of the test laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the Federal Government. NVLAP LAB Code.: 200723-0 2A9SGSRS03 FHIKOREA.Co.,Ltd Copyright ○ c 2022, LTA Co., Ltd. Page 1 of 15 Ref. No.: LR500112212A TABLE OF CONTENTS 1. GENERAL INFORMATION -------------------------------------------------------------------------- 2. INFORMAT I O N ABOUT TEST ITEM ------------------------------------------------------------- 3. TEST REPORT ------------------------------------------------------------------------------------------ 3.1 SUMMARY OF TESTS ---------------------------------------------------------------------------- 3.2 TECHNICAL CHARACTERISTICS TEST ---------------------------------------------------- 3.2.1 Radiated Emission ------------------------------------------------------------------------------- 3.2.2 Frequency Tolerance ------------------------------------------------------------------------------ 3.2.3 20dB Bandwidth ------------------------------------------------------------------------------ 3.2.4 AC Conducted Emissions --------------------------------------------------------------------------- APPENDIX APPENDIX TEST EQUIPMENT USED FOR TESTS -------------------------------------------- 3 4 5 5 6 6 11 12 14 15 Copyright ○ c 2022, LTA Co., Ltd. Page 2 of 15 Ref. No.: LR500112212A 1. General information 1- 1 Test Performed Company name : LTA Co., Ltd. Address : 243, Jubug-ri,Yangji-Myeon,Youngin-Si, Kyunggi-Do, Korea. 17159 Web site : http://www.ltalab.com E-mail : [email protected] Telephone : +82-31-323-6008 Facsimile +82-31-323-6010 Quality control in the testing laboratory is implemented as per ISO/IEC 17025 which is the “General requirements for the competents of calibration and testing laboratory”. 1- 2 Accredited agencies LTA Co., Ltd. is approved to perform EMC testing by the following agencies: Agency Country Accreditation No. Validity Reference NVLAP U.S.A 200723-0 2023-09-28 ECT accredited Lab. RRA KOREA KR0049 - EMC accredited Lab. FCC U.S.A 649054 2023-01-25 FCC CAB VCCI JAPAN C-4948, 2023-09-10 VCCI registration VCCI JAPAN T-2416, 2023-09-10 VCCI registration VCCI JAPAN R-4483(10 m), 2023-08-15 VCCI registration VCCI JAPAN G-847 2023-12-13 VCCI registration IC CANADA 5799A-1 2023-10-18 IC filing Copyright ○ c 2022, LTA Co., Ltd. Page 3 of 15 Ref. No.: LR500112212A 2. Information about test item 2-1 Client & Manufacturer Client Company name : ZEMITA Co,. Ltd. Address : #401-1302, 655, Pyeongcheon-ro, Bucheon-si, Gyeonggi-do, Republic of Korea Tel / Fax : Tel. +82-70-4006-7000 / Fax +82-2 -6499-2900 Manufacturer ZEMITA Co,. Ltd. Address #401-1302, 655, Pyeongcheon-ro, Bucheon-si, Gyeonggi-do, Republic of Korea Tel / Fax Tel. +82-70-4006-7000 / Fax +82-2 -6499-2900 2- 2 Equipment Under Test (EUT) Model name : SRS03 Serial number : Identical prototype Date of receipt : July 18 ,2022 EUT condition : Pre-production, not damaged Antenna type : Pattern Antenna Frequency Range : 13.56 MHz Type of Modulation : FSK Power Source : DC 3.0 V 2- 3 Tested frequency LOW MID HIGH Frequency (MHz) 13.56 2-4 Ancillary Equipment Equipment Model No. Serial No. Manufacturer - - - - Copyright ○ c 2022, LTA Co., Ltd. Page 4 of 15 Ref. No.: LR500112212A 3. Test Report 3.1 Summary of tests FCC Part Section(s) Parameter Test Condition Status (note 1) 15.209 15.225(a)(b)(c)(d) Radiated Emission Radiated C 15.225(e) Frequency Tolerance C 15.215(c) 20dB Bandwidth C 15.207 AC Conducted Emissions Conducted N/A 15.203 Antenna requirement - C N/A : This product is battery-enabled and excludes the test. The above equipment was tested by LTA Co., Ltd. The test data, data evaluation, test procedures, and equipment configurations 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 the requirements of FCC Rules Part 2 and Part 15.225 The test results of this report relate only to the tested sample identified in this report. The tests were performed according to the method of measurements prescribed in KDB No.558074.  Antenna Requirement FHIKOREA.Co.,Ltd FCC ID: 2A9SGSRS03 unit complies with the requirement of §15.203. The antenna type is Pattern Antenna Copyright ○ c 2022, LTA Co., Ltd. Page 5 of 15 Ref. No.: LR500112212A 3.2 Technical Characteristics Test 3.2.1 Radiated Spurious Emissions Procedure: Radiated emissions from 30 MHz to 25 GHz were measured according to the methods defines in ANSI C63.10-2013. The EUT is a placed on as turn table. For emissions testing at or below 1 GHz, the table height shall be 0.8 m above the reference ground plane. For emission measurements above 1 GHz, the table height shall be 1.5 m. The turn table shall rotate 360 degrees to determine the position of maximum emission level. EUT is set 3m away from the receiving antenna which varied from 1m to 4m to find out the highest emission. And also, each emission was to be maximized by changing the polarization of receiving antenna both horizo…

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FCC ID: 2A9SGSRS03 Radiate Emission Copyright ○ c 2022, LTA Co., Ltd. Page 1 of 3 FCC ID: 2A9SGSRS03 Copyright ○ c 2022, LTA Co., Ltd. Page 2 of 3 FCC ID: 2A9SGSRS03 Copyright ○ c 2022, LTA Co., Ltd. Page 3 of 3