2AH25T6831Smart POS System

Rev 1/26/2023 Shanghai Sunmi Technology Co.,Ltd. Room 505,No.388,Song Hu Road,Yang Pu District,Shanghai,China Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 05-28-2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AH25T6831 [Shanghai Sunmi Technology Co.,Ltd.] (“the applicant”) 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. Sincerely, Signature Printed Name: Fang Lu Job Title: Certification Manager Email: [email protected] Telephone: +86 18501703215 Rev 1/26/2023 Shanghai Sunmi Technology Co.,Ltd. Room 505,No.388,Song Hu Road,Yang Pu District,Shanghai,China Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 05-28-2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AH25T6831 [Shanghai Sunmi Technology Co.,Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered”equipment. Sincerely, Signature Printed Name: Fang Lu Job Title: Certification Manager Email: [email protected] Telephone: +86 18501703215

第1页 Product Change Description As the applicant of the below models, Shanghai SUNMI Technology CO., Ltd. declares that the product, Model Name: T6831 HW: V1.0 SW: V3.0.4 FCC ID: 2AH25T6831 is the variant of the initial certified product, Model Name: T6F10 HW: V1.0(LA+EU) SW: V3.0.0 FCC ID: 2AH25T6F10 SOFTWARE MODIFICATIONS: Protocol Stack changes: NO MMS/SUPL changes: NO STK/USAT changes: NO Browsing changes: NO Other changes detailed:Optimize functions, solve bugs, and iterate software versions. Iterative software upgrades do not affect RF performance. HARDWARE MODIFICATIONS: Band changes: NO Power Amplifier changes: NO Antenna changes: NO PCB Layout changes: NO Components on PCB changes: Yes Speaker changes: NO Vibrator changes: NO Bluetooth changes: NO FM changes: NO Camera changes: Please refer to the following difference chart LCD changes: Please refer to the following difference chart 第2页 Other changes：PCBA Change:The difference between the original and the variant of PCBA is shown in the following figure: Type of Service Model Name Scanner Rear Camera Flash Lamp LCD (Just different manufacturers) Original T6F10 Yes 5M AF+flash Yes SHENZHEN DJN PHOTOELECTRIC TECHNOLOGY CO., LTD (9A-3R067-7026A) Variant T6831 NO 2M FF NO SHENZHEN DJN PHOTOELECTRIC TECHNOLOGY CO., LTD (98-31050-7084A) SHENZHEN DJN PHOTOELECTRIC TECHNOLOGY CO., LTD (98-31050-7084A-H) GUANGDONG SUPERVIEW OPTOELECTRONICS CO.,LTD. (G499BHA085A0) 第3页 MECHANICAL MODIFICATIONS: Use new metal front/back cover or keypad: YES Mechanical shell changes: YES Other changes detailed: 1.No scaner. 2.The position of the front camera is different. 3.Add keyboard. 第4页 ACCESSORY MODIFICATIONS: Battery changes: NO AC Adaptor changes: NO USB Cable changes: NO Earphone changes: NO APPROVED BY： Date:2024-04-08 Company: Shanghai Sunmi Technology Co., Ltd. Address: Room 505, No.388 Song Hu Road, Yang Pu District, Shanghai, China Tel: +86 18501703215

Shanghai Sunmi Technology Co.,Ltd. Room 505,No.388,Song Hu Road,Yang Pu District,Shanghai,China LETTER OF AGENCY Date:2024/05/28 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 FCC ID:2AH25T6831 To Whom It May Concern: We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse ACT of 1988, U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002(b), to the application, is subject to denial of federal benefits, that includes FCC benefits. Thank you for your attention to this matter. Sincerely yours, Signature Printed Name: Fang Lu Company: Shanghai Sunmi Technology Co.,Ltd. Job Title: Certification Manager Email: [email protected] Telephone: +86 18501703215

Shanghai Sunmi Technology Co.,Ltd. Request for Short-Term Confidentiality Letter-FCC Date：2024/05/28 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Re: Request for Short-Term confidentiality FCC ID: 2AH25T6831 To whom it may concern, We hereby respectfully request that under the provision of 47 CFR 0.459 and 0.457(d) the documents listed below and attached with this application for certification be provided with Short- Term confidential status for 180 days from the date of the grant. • External Photos.pdf • Internal Photos • Test Setup Photos.pdf • User’s Manual Any exhibit / information for which we have requested confidentiality, but which may not be accorded such treatment by the FCC, should be returned to us. The documents listed above contain trade secrets that are treated as confidential by us. Substantial competitive harm to us could result should they be made available to the public. Sincerely yours, Signature Printed Name: Fang Lu Company: Shanghai Sunmi Technology Co.,Ltd. Job Title: Certification Manager Email: [email protected] Telephone: +86 18501703215

Shanghai Sunmi Technology Co.,Ltd. Request for Long-Term Confidentiality Letter-FCC Date: 2024/05/28 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Re: Request for Long-Term confidentiality FCC ID: 2AH25T6831 To whom it may concern, We hereby respectfully request that under the provision of 47 CFR 0.459 and 0.457(d) the documents listed below and attached with this application for certification be provided with Long- Term confidential status. • Schematics.pdf • Operational Description.pdf • Frequency Block Diagrams.pdf • SOFTWARE SECURITY REQUIREMENTS FOR U-NII DEVICES • BOM • Tune up Power Procedure • ECR letters(FCC-ISED Inquiry Communication and/or Documentation) Any exhibit / information for which we have requested confidentiality, but which may not be accorded such treatment by the FCC, should be returned to us. The documents listed above contain trade secrets that are treated as confidential by us. Substantial competitive harm to us could result should they be made available to the public. Sincerely yours, Signature Printed Name: Fang Lu Company: Shanghai Sunmi Technology Co.,Ltd. Job Title: Certification Manager Email: [email protected] Telephone: +86 18501703215

Report No: 24T04I300065-051 Industrial Internet Innovation Center (Shanghai) Co.,Ltd. Page 1 of 236 Industrial Internet Innovation Center (Shanghai) Co.,Ltd. SAR TEST REPORT PRODUCT Smart POS System BRAND SUNMI MODEL T6831 FCC ID 2AH25T6831 APPLICANT Shanghai Sunmi Technology Co.,Ltd. ISSUE DATE June 7, 2024 STANDARD(S) FCC 47 CFR Part 2.1093, ANSI/IEEE C95.1-1992, IEEE Std 1528-2013 Prepared by: Chen Jintao Reviewed by: Yan Hang Approved by: Zhang Min CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. Report No: 24T04I300065-051 Industrial Internet Innovation Center (Shanghai) Co.,Ltd. Page 2 of 236 CONTENTS 1 SUMMARY OF TEST REPORT .................................................................................................................... 5 1.1 TEST STANDARD (S) ...................................................................................................................................... 5 1.2 REFERENCE DOCUMENTS............................................................................................................................... 5 1.3 SUMMARY OF TEST RESULTS .......................................................................................................................... 6 2 GENERAL INFORMATION OF THE LABORATORY ........................................................................................ 9 2.1 TESTING LABORATORY ................................................................................................................................... 9 2.2 LABORATORY ENVIRONMENTAL REQUIREMENTS ................................................................................................. 9 2.3 PROJECT INFORMATION ................................................................................................................................. 9 3 GENERAL INFORMATION OF THE CUSTOMER ..........................................................................................10 3.1 APPLICANT ............................................................................................................................................... 10 3.2 MANUFACTURER ....................................................................................................................................... 10 3.3 FACTORY .................................................................................................................................................. 10 4 GENERAL INFORMATION OF THE PRODUCT ............................................................................................11 4.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ............................................................................. 11 4.2 DESCRIPTION FOR AUXILIARY EQUIPMENT (AE) ............................................................................................... 12 5 TEST CONFIGURATION INFORMATION ....................................................................................................13 5.1 TEST EQUIPMENTS UTILIZED ........................................................................................................................ 13 5.2 MEASUREMENT UNCERTAINTY ..................................................................................................................... 14 5.3 EUT CONNECTION DIAGRAM OF TEST SYSTEM ................................................................................................ 15 6 SPECIFIC ABSORPTION RATE(SAR) ...........................................................................................................16 6.1 INTRODUCTION.......................................................................................................................................... 16 6.2 SAR DEFINITION........................................................................................................................................ 16 7 SAR MEASUREMENT SYSTEM INTRODUCTION ........................................................................................17 7.1 MEASUREMENT SET-UP .............................................................................................................................. 17 7.2 E-FIELD PROBE SYSTEM ............................................................................................................................... 18 7.3 E-FIELD PROBE CALIBRATION ........................................................................................................................ 19 7.4 OTHER TEST EQUIPMENT ............................................................................................................................ 20 8 TEST POSITION IN RELATION TO THE PHANTOM .....................................................................................23 8.1 GENERAL CONSIDERATIONS .......................................................................................................................... 23 8.2 BODY-WORN DEVICE .................................................................................................................................. 24 8.3 DESKTOP DEVICE ........................................................................................................................................ 25 9 TISSUE SIMULATING LIQUIDS ..................................................................................................................26 9.1 EQUIVALENT TISSUES COMPOSITION .............................................................................................................. 26 9.2 LIQUID DEPTH ........................................................................................................................................... 28 9.3 DIELECTRIC PERFORMANCE OF TSL ............................................................................................................... 29 Report No: 24T04I300065-051 Industrial Internet Innovation Center (Shanghai) Co…

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Report No: 24T04I300065-051 Industrial Internet Innovation Center (Shanghai) Co.,Ltd. Page 1 of 236 Industrial Internet Innovation Center (Shanghai) Co.,Ltd. SAR TEST REPORT PRODUCT Smart POS System BRAND SUNMI MODEL T6831 FCC ID 2AH25T6831 APPLICANT Shanghai Sunmi Technology Co.,Ltd. ISSUE DATE June 7, 2024 STANDARD(S) FCC 47 CFR Part 2.1093, ANSI/IEEE C95.1-1992, IEEE Std 1528-2013 Prepared by: Chen Jintao Reviewed by: Yan Hang Approved by: Zhang Min CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. Report No: 24T04I300065-051 Industrial Internet Innovation Center (Shanghai) Co.,Ltd. Page 2 of 236 CONTENTS 1 SUMMARY OF TEST REPORT .................................................................................................................... 5 1.1 TEST STANDARD (S) ...................................................................................................................................... 5 1.2 REFERENCE DOCUMENTS............................................................................................................................... 5 1.3 SUMMARY OF TEST RESULTS .......................................................................................................................... 6 2 GENERAL INFORMATION OF THE LABORATORY ........................................................................................ 9 2.1 TESTING LABORATORY ................................................................................................................................... 9 2.2 LABORATORY ENVIRONMENTAL REQUIREMENTS ................................................................................................. 9 2.3 PROJECT INFORMATION ................................................................................................................................. 9 3 GENERAL INFORMATION OF THE CUSTOMER ..........................................................................................10 3.1 APPLICANT ............................................................................................................................................... 10 3.2 MANUFACTURER ....................................................................................................................................... 10 3.3 FACTORY .................................................................................................................................................. 10 4 GENERAL INFORMATION OF THE PRODUCT ............................................................................................11 4.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ............................................................................. 11 4.2 DESCRIPTION FOR AUXILIARY EQUIPMENT (AE) ............................................................................................... 12 5 TEST CONFIGURATION INFORMATION ....................................................................................................13 5.1 TEST EQUIPMENTS UTILIZED ........................................................................................................................ 13 5.2 MEASUREMENT UNCERTAINTY ..................................................................................................................... 14 5.3 EUT CONNECTION DIAGRAM OF TEST SYSTEM ................................................................................................ 15 6 SPECIFIC ABSORPTION RATE(SAR) ...........................................................................................................16 6.1 INTRODUCTION.......................................................................................................................................... 16 6.2 SAR DEFINITION........................................................................................................................................ 16 7 SAR MEASUREMENT SYSTEM INTRODUCTION ........................................................................................17 7.1 MEASUREMENT SET-UP .............................................................................................................................. 17 7.2 E-FIELD PROBE SYSTEM ............................................................................................................................... 18 7.3 E-FIELD PROBE CALIBRATION ........................................................................................................................ 19 7.4 OTHER TEST EQUIPMENT ............................................................................................................................ 20 8 TEST POSITION IN RELATION TO THE PHANTOM .....................................................................................23 8.1 GENERAL CONSIDERATIONS .......................................................................................................................... 23 8.2 BODY-WORN DEVICE .................................................................................................................................. 24 8.3 DESKTOP DEVICE ........................................................................................................................................ 25 9 TISSUE SIMULATING LIQUIDS ..................................................................................................................26 9.1 EQUIVALENT TISSUES COMPOSITION .............................................................................................................. 26 9.2 LIQUID DEPTH ........................................................................................................................................... 28 9.3 DIELECTRIC PERFORMANCE OF TSL ............................................................................................................... 29 Report No: 24T04I300065-051 Industrial Internet Innovation Center (Shanghai) Co…

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Project Name HW Version Temperature/Humidity StandardFre(Mhz) Effi(%) (Min~Max) 600~800 12%-41% 800~960 19%-35% 1700~2170 30%-38% 2300~2400 39%-45% 2500~2700 40%-50% 600~800 3%-14% 800~960 8%-20% 1700~2170 25%-35% 2300~2400 38%-40% 2500~2700 25%-30% NFC Antenna13.56MHz / 2.4G 30%-40% 5G 25%-35% GPSL5 30% Antenna Passive Test Report Conclusion: Main Antenna Div Antenna WiFi Remarks Probiem Description and Next Step Plan 25°C/50%Test EquipmentOTATest Date2023.09.13 DVTPrototype(S/N)DE06D38140019Software Version1.230110.001 693 test-keys SP01EngineerlileiChecker Main Antenna Not involveElementMatching Fixture Picture Matching Circuit、Switch Logic Schematic(CAD and Tag Number Diagram） S Parameter（Return Loss、Smith） frequency(MHz ) Efficiency(dB ) Gain(dB)Efficiency(%) 600-9.80-6.1310.5 610-8.79-4.8013.2 620-7.15-3.3019.3 630-5.90-1.8925.7 640-5.03-0.9231.4 650-4.52-0.5835.3 660-3.980.0840.0 670-3.760.3942.1 680-3.840.3341.3 690-4.53-0.7335.2 700-5.96-2.2125.4 710-8.79-5.3913.2 720-6.65-2.3421.6 730-4.220.4937.9 740-3.900.7840.7 750-4.030.4739.6 760-4.38-0.0636.5 770-4.64-0.4434.4 Passive Performance（Efficiency、Gain） 780-4.71-0.6433.8 790-4.77-0.8833.3 800-4.83-1.2132.9 810-4.80-1.5333.1 820-4.85-1.6832.8 830-4.79-1.6333.2 840-4.85-1.7032.8 850-4.99-2.0331.7 860-5.02-2.2731.5 870-5.28-2.8229.7 880-5.46-3.5528.4 890-5.68-3.5827.0 900 -5.79-3.36 26.4 910 -5.29-2.54 29.6 920 -5.72-3.17 26.8 930 -6.34-3.95 23.2 940 -6.83-4.33 20.7 950 -6.98-4.30 20.1 960 -7.26-4.47 18.8 1700 -4.79-0.34 33.2 1720 -5.01-0.70 31.5 1740 -4.73-0.42 33.6 1760 -4.70-0.09 33.9 1780 -4.720.03 33.7 1800 -4.580.00 34.8 1820 -4.610.23 34.6 1840 -4.590.17 34.8 1860 -4.450.17 35.9 1880 -4.550.17 35.1 1900 -4.320.46 36.9 1920 -4.270.60 37.4 1940 -4.610.23 34.6 1960 -4.780.36 33.3 1980 -5.180.73 30.3 2000 -5.430.57 28.7 2020 -5.520.39 28.0 2040 -5.400.59 28.8 2060 -5.221.07 30.1 2080 -4.821.67 32.9 2100 -4.521.67 35.3 2120 -4.131.75 38.7 2140 -4.131.12 38.6 2160 -4.150.63 38.4 2180 -4.170.26 38.3 2200 -4.160.21 38.3 2220 -4.080.23 39.1 2240 -3.890.57 40.9 2260 -3.600.81 43.7 2280 -3.441.08 45.3 2300 -3.390.99 45.8 2320 -3.381.01 45.9 2340 -3.670.80 42.9 2360 -3.910.61 40.6 2380 -4.220.41 37.9 2400 -4.080.12 39.1 2420 -3.760.60 42.0 2440 -3.690.59 42.8 2460 -3.890.38 40.9 2480 -3.860.55 41.1 2500 -3.990.39 39.9 2520 -3.930.29 40.5 2540 -3.870.03 41.0 2560 -3.91-0.17 40.6 2580 -3.620.04 43.4 2600 -3.580.70 43.8 2620 -3.201.54 47.9 2640 -3.091.89 49.1 2660 -2.902.23 51.3 2680 -2.832.41 52.1 2700 -2.882.12 51.5 Div Antenna ElementMatching Not involve Fixture Picture Matching Circuit、Switch Logic Schematic(CAD and Tag Number Diagram） frequency(MHz ) Gain(dB) Efficiency(dB ) Efficiency(%) 617-11.39-14.803.31 663-9.67-12.975.04 704-7.86-11.477.13 729-7.65-11.317.40 746-6.91-10.818.30 751-6.46-10.329.29 756-6.06-9.7810.53 777-5.36-8.6113.76 791-5.69-8.7713.26 806-5.53-8.5713.89 815-5.10-8.3514.61 821-4.89-8.5114.08 824-4.86-8.4714.23 832-4.59-8.2215.07 S Parameter（Return Loss、Smith） Passive Performance（Efficiency、Gain） 836-4.38-8.2215.06 847-3.81-8.0815.56 849-3.79-7.9815.93 862-4.23-7.7216.89 869-4.68-7.8016.59 880-5.14-8.4014.46 881-5.17-8.4814.20 894-6.58-10.319.31 897-7.00-10.798.33 915-6.08-8.7713.26 925-6.29-9.0512.45 942-7.29-10.329.29 960-8.10-11.287.45 1805-0.57-4.7333.62 1880-0.70-4.9032.35 1920-0.95-5.0431.37 1980-2.84-6.0624.75 21550.17-4.8332.91 2170-0.26-5.2329.99 2200-1.68-5.7126.87 23001.29-4.6234.55 23501.07-4.3137.10 24001.03-4.3237.01 25000.08-5.2030.19 25350.65-5.0531.26 25700.71-5.3928.88 25930.83-5.4528.51 25950.82-5.5028.16 26200.85-5.4828.32 26550.65-5.4728.36 26900.40-5.6227.43 NFC Antenna NFC Antenna Reader Mode Load Impedance NFC Antenna Specifications Wifi&Gps ElementMatching Not involve Fixture Picture Matching Circuit、Switch Logic Schematic(CAD and Tag Number Diagram） frequency(MHz ) Efficiency(dB ) Gain(dB)Efficiency(%) 1520-4.59-1.6939.90 1525-4.54-1.5640.36 1530-4.48-1.4440.93 1535-4.46-1.2041.11 1540-4.44-1.0141.30 1545-4.47-1.0041.02 1550-4.54-0.9740.36 1555-4.63-0.8739.54 1560-4.73-0.9138.64 1565-4.84-1.0037.67 1570-4.95-1.0436.73 1575-5.11-1.2235.40 1580-5.25-1.3534.28 S Parameter（R…

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