2A2AI-S2Mini Thermal Printer

FCC Caution. 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: 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 or more 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 connected. -Consult the dealer or an experienced radio/TV technician for help. FCC Radiation Exposure Statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Shenzhen Yinxiaoqian technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2024-08-08 FCC ID: 2A2AI-S2 Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Shenzhen Yinxiaoqian technology Co., Ltd. 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Shenzhen Yinxiaoqian technology Co., Ltd. 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. Applicant: Shenzhen Yinxiaoqian technology Co., Ltd. Address: 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Contact Person: Musk Zhang Tel.: 15815526007 Email: [email protected] Sincerely, Signature:

Attestation Statements Date: 2024-08-12 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID:2A2AI-S2) Shenzhen Yinxiaoqian technology Co., Ltd., the undersigned, hereby authorize HOPEK CORPORATION INC to act as our designated U.S. agent for service of process, Shenzhen Yinxiaoqian technology 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. HOPEK CORPORATION INC accepts the responsibility to act as designated U.S. agent for service of process. Applicant Information： Company name: Shenzhen Yinxiaoqian technology Co., Ltd. Contact Name: Musk Zhang Address: 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Telephone No: 15815526007 Email: [email protected] FRN: 0031025356 Signature: Musk Zhang U.S. Agent Information: Company Name:HOPEK CORPORATION INC Address:4358 S BANNOCK ST ENGLEWOOD, CO 80110UnitedStates FRN:0034562900 Contact Name:Peter Davis Telephone No:561-235-6113 Email:[email protected] Signature: Peter Davis

Shenzhen Yinxiaoqian technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: August 12, 2024 Subject; Request for Confidentiality FCC ID: 2A2AI-S2 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 Tune-up Procedure 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: Musk Zhang Title: Manager

Shenzhen Yinxiaoqian technology Co., Ltd. Declaration Letter of Model Difference Date: 2024-08-08 Tested Model Number: S2 Adding Model Number(s): S2Pro, S2Max, X2, X2Pro All Adding Model Number(s) is/are same electrically identical as Tested Model Number. Only model name and appearance are different for market purpose. Yours Sincerely, Applicant: Shenzhen Yinxiaoqian technology Co., Ltd. Address: 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Contact Person: Musk Zhang Tel.: 15815526007 Email: [email protected] Sincerely, Signature:

BluetoothAntenna specification YichipMicroelectronics ©2014 TestCompanyTATechnology(Shanghai)Co.,Ltd. TestAddress Building1,No.400,FangchunRoad,China(Shanghai)PilotFreeTradeZone TestDate2020/7/24 TestInstrument Keysight E5071B antennadesignspecification Antennadimensionsasblowpictureshow:thematerialisFR4andthethicknessis 1.6mmofPCB. GianandEfficiency Frequency (MHz) Efficiency(%)Gain(dBi) 240214.86-0.93 242012.54-1.17 24409.92-2.03 24607.46-2.47 24806.11-2.98 3Dand1DRadiationPatterns Total P o w e r ( d B m ) -25 0 -20 -15 -10 -5 X Y Z Azimuth = 0.0 Elevation = 0.0 Roll = 0.0 2440MTRP1 Manufacturer Antenna Model Address Yichip Microelectronics (Hangzhou) Co., Ltd. Room 501, Building 1A, No. 57, Jianger Rd., Changhe Street, Binjiang District, Hangzhou, Zhejiang Province, PRC. S2 Cut1 P o w e r ( d B m ) Angle (? Scale: 2/div Min: -16 Max: -2 0 180 30 210 60 240 90270 120 300 150 330 Cut2 P o w e r ( d B m ) Angle (? Scale: 2/div Min: -22 Max: 0 0 180 30 210 60 240 90270 120 300 150 330 Cut3 P o w e r ( d B m ) Angle (? Scale: 2/div Min: -14 Max: -2 0 180 30 210 60 240 90270 120 300 150 330

Page 1 of 5 Report No.: LGT24G094 Appendix - External Photographs of EUT Constructional Details Model: S2 Photo 1 Photo 2 Page 2 of 5 Report No.: LGT24G094 Photo 3 Photo 4 Page 3 of 5 Report No.: LGT24G094 Photo 5 Photo 6 Page 4 of 5 Report No.: LGT24G094 Photo 7 Photo 8 Page 5 of 5 Report No.: LGT24G094 Photo 9 Photo 10

Label FCC ID: 2A2AI-S2 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.

Page 1 of 4 Report No.: LGT24G094 Appendix - Internal Photographs of EUT Constructional Details Model: S2 Photo 1 Photo 2 Page 2 of 4 Report No.: LGT24G094 Photo 3 Photo 4 BT ANT Page 3 of 4 Report No.: LGT24G094 Photo 5 Photo 6 Page 4 of 4 Report No.: LGT24G094 Photo 7 Photo 8

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China RF TEST REPORT Product Name: Mini Thermal Printer Model Name: S2, S2Pro, S2Max, X2, X2Pro FCC ID: 2A2AI-S2 Issued For : Shenzhen Yinxiaoqian technology Co., Ltd. 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT24G094HA02 Sample Received Date: July 12, 2024 Date of Test: July 12, 2024 – Aug. 06, 2024 Date of Issue: Aug. 07, 2024 Report No.: LGT24G094HA02 Page 2 of 9 TEST REPORT CERTIFICATION Applicant: Shenzhen Yinxiaoqian technology Co., Ltd. Address: 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Manufacture: Shenzhen Yinxiaoqian technology Co., Ltd. Address: 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Product Name: Mini Thermal Printer Trademark: MARKLIFE Model Name: S2, S2Pro, S2Max, X2, X2Pro Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47 CFR §2.1093 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT24G094HA02 Page 3 of 9 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 APPENDIX I - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS 9 Report No.: LGT24G094HA02 Page 4 of 9 Revision History Rev. Issue Date Revisions 00 Aug. 07, 2024 Initial Issue Report No.: LGT24G094HA02 Page 5 of 9 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: Mini Thermal Printer Trademark: MARKLIFE Model Name: S2 Series Model: S2Pro, S2Max, X2, X2Pro Model Difference: The product is the same, only the appearance color difference. Frequency Bands: Bluetooth/BLE 2402-2480MHz Battery: Capacity: 1200mAh Rated Voltage: 3.7V Hardware Version: N/A Software Version: N/A 1.2 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate A2LA Certificate No.: 6727.01 FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT24G094HA02 Page 6 of 9 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Report No.: LGT24G094HA02 Page 7 of 9 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Report No.: LGT24G094HA02 Page 8 of 9 2.3 TEST RESULT Turn up Result Mode Turn up Power BT-GFSK 3±1dBm BLE-GFSK -2±1dBm The MPE result of worst mode: RF Function Frequency (MHz) Max Turn up Power (dBm) Max Turn up Power (mW) Estimated SAR Limit Ratio Result BT-GFSK 2402 4.00 2.51 0.794 3 0.265 Pass BLE-GFSK 2402 -1.00 0.79 0.251 3 0.084 Pass Note: 1. The estimated SAR≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm, complies with the exemption requirements. Report No.: LGT24G094HA02 Page 9 of 9 APPENDIX I - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Note: Please see the attached S2_EUT Photos. ※※※※※END OF THE REPORT※※※※※

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China RF TEST REPORT Product Name: Mini Thermal Printer Model Name: S2, S2Pro, S2Max, X2, X2Pro FCC ID: 2A2AI-S2 Issued For : Shenzhen Yinxiaoqian technology Co., Ltd. 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT24G094RF03 Sample Received Date: July 12, 2024 Date of Test: July 12, 2024 – Aug. 06, 2024 Date of Issue: Aug. 07, 2024 Report No.: LGT24G094RF03 Page 2 of 61 TEST REPORT CERTIFICATION Applicant: Shenzhen Yinxiaoqian technology Co., Ltd. Address: 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Manufacturer: Shenzhen Yinxiaoqian technology Co., Ltd. Address: 202E, building A4, Hom Industrial Zone, 41 Wuhe Avenue (South) Nankeng community, Bantian street, Longgang District, Shenzhen. China Product Name: Mini Thermal Printer Trademark: MARKLIFE Model Name: S2, S2Pro, S2Max, X2, X2Pro Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC Part 15.247, Subpart C ANSI C63.10-2013 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT24G094RF03 Page 3 of 61 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 10 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 12 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 12 2.6 EQUIPMENTS LIST 13 3. EMC EMISSION TEST 14 3.1 CONDUCTED EMISSION MEASUREMENT 14 3.2 RADIATED EMISSION MEASUREMENT 18 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 30 4.1 LIMIT 30 4.2 TEST PROCEDURE 30 4.3 TEST SETUP 31 4.4 EUT OPERATION CONDITIONS 31 4.5 TEST RESULTS 31 5. NUMBER OF HOPPING CHANNEL 32 5.1 LIMIT 32 5.2 TEST PROCEDURE 32 5.3 TEST SETUP 32 5.4 EUT OPERATION CONDITIONS 32 5.5 TEST RESULTS 32 6. AVERAGE TIME OF OCCUPANCY 33 6.1 LIMIT 33 6.2 TEST PROCEDURE 33 6.3 TEST SETUP 33 6.4 EUT OPERATION CONDITIONS 33 6.5 TEST RESULTS 33 7. HOPPING CHANNEL SEPARATION MEASUREMEN 34 7.1 LIMIT 34 7.2 TEST PROCEDURE 34 Report No.: LGT24G094RF03 Page 4 of 61 Table of Contents Page 7.3 TEST SETUP 34 7.4 EUT OPERATION CONDITIONS 34 7.5 TEST RESULTS 34 8. BANDWIDTH TEST 35 8.1 LIMIT 35 8.2 TEST PROCEDURE 35 8.3 TEST SETUP 35 8.4 EUT OPERATION CONDITIONS 35 8.5 TEST RESULTS 35 9. OUTPUT POWER TEST 36 9.1 LIMIT 36 9.2 TEST PROCEDURE 36 9.3 TEST SETUP 36 9.4 EUT OPERATION CONDITIONS 36 9.5 TEST RESULTS 36 10. ANTENNA REQUIREMENT 37 10.1 STANDARD REQUIREMENT 37 10.2 EUT ANTENNA 37 APPENDIX I - TEST RESULTS 38 DUTY CYCLE 38 MAXIMUM PEAK CONDUCTED OUTPUT POWER 40 -20DB BANDWIDTH 41 OCCUPIED CHANNEL BANDWIDTH 43 CARRIER FREQUENCIES SEPARATION 45 BAND EDGE 47 BAND EDGE(HOPPING) 50 CONDUCTED RF SPURIOUS EMISSION 53 NUMBER OF HOPPING CHANNEL 56 DWELL TIME 58 APPENDIX II - TEST SETUP 60 APPENDIX III - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS 61 Report No.: LGT24G094RF03 Page 5 of 61 Revision History Rev. Issue Date Revisions 00 Aug. 07, 2024 Initial Issue Report No.: LGT24G094RF03 Page 6 of 61 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247, Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(1)(iii) Number of Hopping Frequency PASS -- 15.247(a)(1)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Report No.: LGT24G094RF03 Page 7 of 61 1.1 TEST FACTORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate A2LA Certificate No.: 6727.01 FCC Registration No.: 746540 CAB ID: CN0136 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.988dB 3 All emissions, radiated 9K-30MHz ±2.84dB 4 All emissions, radiated 30M-1GHz ±4.39dB 5 All emissions, radiated 1G-6GHz ±5.10dB 6 All emissions, radiated>6G ±5.48dB 7 Conducted Emission (9KHz-150KHz) ±2.79dB 8 Conducted Emission (150KHz-30MHz) ±2.80dB Note: The measurement uncertainty is not included in the test result. Report No.: LGT24G094RF03 Page 8 of 61 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Mini Thermal Printer Trademark: MARKLIFE Model Name: S2 Series Model: S2Pro, S2Max, X2, X2Pro Model Difference: The product is the same, only the appearance color difference. Channel List: Please refer to …

Text truncated - open the document above for the full version.