2A57D-GG-AT50EWPortable Lable Printer

FCC Statement: 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 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 guarant ee 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. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environm ent. This transmitter must not be co‐located or operating in conjunction with any other antenna or transmitter.

Model difference letter 2023.01.16 Dear Eurofins Reviewer, This is a new Application from ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Model No.: GG-AT 50EW, GG-D1100MW,GG-D110ACW, RM-GG-950, GG-D15 Only the model GG-AT 50EW was tested, since the electrical circuit design, layout, components used and internal wiring were identical for the above models, with difference being model name. Thank you for your cooperation! Yours sincerely, Signatory: Name: Wenping Xu Position: Senior System Engineer Company Name: ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address: NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Tel / Fax 15989782245 E-Mail: [email protected]

ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Agent Authorization Letter 2023-01-16 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen Most Technology Service Co., Ltd. to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name: Wenping Xu Position: Senior System Engineer Company Name: ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address: NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Tel / Fax 15989782245 E-Mail: [email protected]

ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Long Term Confidentiality Request Letter 2023.01.16 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR (FCC ID: 2A57D-GG-AT50EW) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - e.g. Block diagram - e.g. SCH - e.g. Operational Description required to be submitted with this application be permanently withheld from public review. The above documents are company proprietary information that could never get into the possession of your competition. Please contact me if there is any information you may need. Sincerely, Name: Wenping Xu Position: Senior System Engineer Company Name: ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address: NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Tel / Fax 15989782245 E-Mail: [email protected]

Model No.: GG-AT 50EW FRONT VIEW OF SAMPLE BACK VIEW OF SAMPLE Model No.: GG-AT 50EW LEFT VIEW OF SAMPLE RIGHT VIEW OF SAMPLE Model No.: GG-AT 50EW TOP VIEW OF SAMPLE BOTTOM VIEW OF SAMPLE Model No.: GG-AT 50EW VIEW OF SAMPLE

Model No.:GG-AT 50EW Page 1 of 5 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF SAMPLE PCB Model No.:GG-AT 50EW Page 2 of 5 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF SAMPLE PCB Model No.:GG-AT 50EW Page 3 of 5 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF SAMPLE PCB Model No.:GG-AT 50EW Page 4 of 5 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF SAMPLE PCB Antenna Location Model No.:GG-AT 50EW Page 5 of 5 Battery

Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. RF Exposure Evaluation Report Report Reference No. ..................... : FCC ID.. ........................................... : MTEB22111522-H 2A57D-GG-AT50EW Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature) .. : Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ..................................... : December 12,2022 Representative Laboratory Name .: Shenzhen Most Technology Service Co., Ltd. Address ............................................ : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................ : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address ............................................ : NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Test specification/ Standard ..........: 47 CFR Part 1.1307 47 CFR Part 1.1310 KDB447498D01 General RF Exposure Guidance v06 TRF Originator .................................. : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description .....................: Portable Lable Printer Trade Mark ....................................... : G&G Manufacturer .................................... : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Model/Type reference....................... : GG-AT 50EW Listed Models .................................. : GG-D1100MW, GG-D110ACW, RM-GG-950, GG-D15 Modulation Type ............................... : GFSK, π/4DQPSK Operation Frequency ........................ : 2402MHz to 2480MHz Hardware Version .............................. BR2551e Software Version ............................... BR8051A01B_00_210311_r6055 Rating ............................................... : DC 5V by USB Port DC 7.4V by Battery Result................................................ : PASS Report No.: MTWG2207124 -H Page 2 of 6 T E S T R E P O R T Equipment under Test : Portable Lable Printer Model /Type : GG-AT 50EW Listed Models : GG-D1100MW, GG-D110ACW, RM-GG-950, GG-D15 Remark Only the model name is different Applicant : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address : NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Manufacturer : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address : NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: MTWG2207124 -H Page 3 of 6 1. R e v i s i o n H i s t o r y Revision Issue Date Revisions Revised By 00 2022-12-12 Initial Issue Alisa Luo Report No.: MTWG2207124 -H Page 4 of 6 2. S A R E v a l u a t i o n 2.1 RF Exposure Compliance Requirement 2.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 4.3.1. Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Exclusion Threshold condition, listed below, is satisfied. 2.1.2 Limits 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 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.: MTWG2207124 -H Page 5 of 6 2.1.3 EUT RF Exposure Antenna Gain: 1.32dbi Antenna Gain: The maximum Gain measured in fully anechoic chamber is 2.4 in linear scale. Output Power Into Antenna & RF Exposure Evaluation Distance: BLE GFSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402 MHz) -3.628 -3.628±1 -2.628 Middle(2440MHz) -3.789 -3.789±1 -2.789 Highest(2480MHz) -4.063 -4.063±1 -3.063 BLE Worst case: GFSK Channel Maximum Peak Conducted Output Power (dBm) Maximum tune-up Power Calculated value Exclusion threshold SAR Test Exclusion (dBm) (mW) Middle(2402MHz) -3.628 -2.628 0..55 0.1694 3.0 Yes Report No.: MTWG2207124 -H Page 6 of 6 EDR GFSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402 MHz) -3.707 -3.707±1 -2.707 Middle(2441MHz) -3.910 -3.910±1 -2.910 Highest(2480MHz) -4.418 -4.418±1 -3.418 π/4DQPSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402 MHz) -4.778 -4.778±1 -3.778 Middle(2441MHz) -4.985 -4.985±1 -3.985 Highest(2480MHz) -5.292 -5.292±1 -4.292 EDR Worst case: GFSK Channel Maximum Peak Conducted Output Power (dBm) Maximum tune-up Power Calculated value Exclusion threshold SAR Test Exclusion (dBm) (mW) Middle(2402MHz) -3.707 -2.707 0.54 0.166 3.0 Yes .......................THE END OF REPORT.........................

Approval sheet Page 1 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 RFANT Pb free Series – RoHS Compliance MULTILAYER CERAMIC ANTENNA Halogens Free Product 2.4 GHz ISM Band RF Application P/N: RFANT2012090A0T *Contents in this sheet are subject to change without prior notice. Approval sheet Page 2 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 FEATURES 1. Surface Mounted Devices with a small dimension of 2.0 x 1.25 x 0.9 mm 3 meet future miniaturization trend. 2. Embedded and LTCC (Low Temperature Co-fired Ceramic) technology is able to future integrate with system design as well as beautifying the housing of final product. 3. High Stability in Temperature / Humidity Change 4. Omni - directional in azimuth APPLICATIONS 1. Bluetooth 2. Wireless LAN 3. HormRF 4. ISM band 2.4GHz working frequency CONSTRUCTION Figure PIN Connection 1 Feeding 2 Soldering terminal DIMENSIONS Figure Symbol Dimension (mm) L 2.0 ± 0.20 W 1.25 ± 0.20 T 0.90 ± 0.10 A 0.25 ± 0.15 12 Approval sheet Page 3 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 ELECTRICAL CHARACTERISTICS RFANT2012090A0T Specification Working Frequency Range 2400 ～ 2500 MHz Gain 1.32 dBi (Typical) VSWR 2.0 max. Polarization Linear Azimuth Beamwidth Omni-directional Impedance 50 Rated Power (max.) 3 Watts Maximum Input Power 5 Watts for 5 minutes Operation Temperature -40°C ~ +85°C Remark: The specification is defined based on the test board dimension as in below SOLDER LAND PATTERN DESIGN Figure Approval sheet Page 4 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 Antenna on Test Board ( FR4 Thickness 0.8mm) Antenna VSWR on Test Board Approval sheet Page 5 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 RADIATION PATTERN Radiation Pattern and Gain were dependent on measurement board design. The specification of RFANT2012090A0T antenna was measured based on the PCB size and installation position as shown in the below figure Test Board (XZ plane) + Z + X - Z - X Approval sheet Page 6 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 ZX plane ZY plane XY plane Frequency [MHz] Max Value [dB] Average [dB] Max Value [dB] Average [dB] Max Value [dB] Average [dB] 2400 0.89 -4.72 1.07 -0.64 -0.03 -3.73 2450 -0.11 -4.90 1.36 -0.54 0.20 -3.54 2500 -0.72 -5.43 0.95 -1.00 0.09 -3.77 (YZ plane) (XY plane) + Z - Z - Y + Y + X + Y - X - Y Approval sheet Page 7 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 RELIABILITY TEST Test item Test condition / Test method Specification Solderability JIS C 0050-4.6 JESD22-B102D *Solder bath temperature：235  5C *Immersion time：2  0.5 sec Solder：Sn3Ag0.5Cu for lead-free At least 95% of a surface of each terminal electrode must be covered by fresh solder. Leaching (Resistance to dissolution of metallization) IEC 60068-2-58 *Solder bath temperature：260  5C *Leaching immersion time：30  0.5 sec Solder : SN63A Loss of metallization on the edges of each electrode shall not exceed 25%. Resistance to soldering heat JIS C 0050-5.4 *Preheating temperature：120~150°C, 1 minute. *Solder temperature：2705C *Immersion time：101 sec Solder：Sn3Ag0.5Cu for lead-free Measurement to be made after keeping at room temperature for 242 hrs No mechanical damage. Electrical specification shall satisfy the descriptions in electrical characteristics under the operational temperature range within -40 ~ 85°C. Loss of metallization on the edges of each electrode shall not exceed 25%. Drop Test JIS C 0044 Customer’s specification. *Height：75 cm *Test Surface：Rigid surface of concrete or steel. *Times：6 surfaces for each units；2times for each side. No mechanical damage. Electrical specification shall satisfy the descriptions in electrical characteristics under the operational temperature range within -40 ~ 85°C. Vibration JIS C 0040 *Frequency：10Hz~55Hz~10Hz(1min) *Total amplitude：1.5mm *Test times：6hrs.(Two hrs each in three mutually perpendicular directions) No mechanical damage. Electrical specification shall satisfy the descriptions in electrical characteristics under the operational temperature range within -40 ~ 85°C. Adhesive Strength of Termination JIS C 0051- 7.4.3 *Pressurizing force： 5N(≦0603)；10N(>0603) *Test time：10±1 sec No remarkable damage or removal of the termination. Bending test JIS C 0051- 7.4.1 The middle part of substrate shall be pressurized by means of the pressurizing rod at a rate of about 1 mm/s per second until the deflection becomes 1mm/s and then pressure shall be maintained for 51 sec. Measurement to be made after keeping at room temperature for 242 hours No mechanical damage. Electrical specification shall satisfy the descriptions in electrical characteristics under the operational temperature range within -40 ~ 85°C. Approval sheet Page 8 of 9 ASC_RFANT2012090A0T_V02 Mar. 2017 Temperature cycle JIS C 0025 1. 303 minutes at -40C3C, 2. 10~15 minutes at room temperature, 3. 303 minutes at +85C3C, 4. 10~15 minutes at room temperature, Total 100 continuous cycles Measurement to be made after keeping at room temperature for 242 hrs No mechanical damage. Electrical specification shall satisfy the descriptions in electrical characteristics under the operational temperature range within -40 ~ 85°C. High temperature JIS C 0021 *Temperature：85C2C *Test duration：1000+24/-0 hours Measurement to be made after keeping at room temperature for 242 hrs No mechanical damage. Electrical specification shall satisfy the descriptions in electrical characteristics under the operational temperature range within -40 ~ 85°C. Humidity (steady conditions) JIS C 0022 *Humidity：90% to 95% R.H. *Temperature：402C *Time：1000+24/-0 hrs. Measurement to be made after keeping at room temperature for 242 hrs ※ 500hrs measuring the first data then 1000hrs data No mechanical damage. Electrical specification shall satisfy the descriptions in electrical characteristics under the operational temperature range within -40 ~ 85°C. Low temperature JIS C 0020 *Temperature：-40C2C *Test duration：1000+24/-0 hours Measurement to be made after keeping at room temperature for 242 hrs No mechanical damage.…

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Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. TEST REPORT FCC Rules Part 15.247 Report Reference No. ..................... : FCC ID.. ........................................... : MTEB22111522-R2 2A57D-GG-AT50EW Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature) .. : Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ..................................... : December 12,2022 Representative Laboratory Name .: Shenzhen Most Technology Service Co., Ltd. Address ............................................ : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................ : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address ............................................ : NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Test specification/ Standard ..........: FCC Rules Part 15.247 TRF Originator .................................. : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description .....................: Portable Lable Printer Trade Mark ....................................... : G&G Manufacturer .................................... : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Model/Type reference....................... : GG-AT 50EW Listed Models .................................. : GG-D1100MW, GG-D110ACW, RM-GG-950, GG-D15 Modulation Type ............................... : GFSK Operation Frequency ........................ : From 2402MHz to 2480MHz Hardware Version .............................. BR2551e Software Version ............................... BR8051A01B_00_210311_r6055 Rating ............................................... : DC 5V by USB Port DC 7.4V by Battery Result................................................ : PASS Report No.: MTEB22111522-R2 Page 2 of 34 T E S T R E P O R T Equipment under Test : Portable Lable Printer Model /Type : GG-AT 50EW Listed Models : GG-D1100MW, GG-D110ACW, RM-GG-950, GG-D15 Remark Only the model name is different Applicant : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address : NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Manufacturer : ZHUHAI NINESTAR INFORMATION TECHNOLOGY CO.,LTD Address : NO.3883,Zhuhai Avenue ,Xiangzhou District,Zhuhai, Guangdong,P.R. China. Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: MTEB22111522-R2 Page 3 of 34 Contents 1. R E V I S I O N H I S T O R Y ................................................................ 4 2. T E S T S T A N D A R D S ................................................................. 5 3. S U M M A R Y ............................................................................ 6 3.1. General Remarks 6 3.2. Product Description 6 3.3. Equipment Under Test 6 3.4. Short description of the Equipment under Test (EUT) 6 3.5. EUT operation mode 7 3.6. Block Diagram of Test Setup 7 3.7. Test Item (Equipment Under Test) Description* 7 3.8. Auxiliary Equipment (AE) Description 7 3.9 Antenna Information* 8 3.10. EUT configuration 8 3.11. Modifications 8 4. T E S T E N V I R O N M E N T .............................................................. 9 4.1. Address of the test laboratory 9 4.2. Environmental conditions 9 4.3. Test Description 10 4.4. Statement of the measurement uncertainty 10 4.5. Equipments Used during the Test 11 5. T E S T C O N D I T I O N S A N D R E S U L T S ........................................... 12 5.1. AC Power Conducted Emission ................................................................................... 12 5.2. Radiated Emission ........................................................................................................ 15 5.3. Maximum Peak Output Power ...................................................................................... 22 5.4. Power Spectral Density ................................................................................................ 23 5.5. 6dB Bandwidth and 99% Bandwidth ............................................................................ 25 5.6. Band Edge Compliance of RF Emission ...................................................................... 27 5.7. Spurious RF Conducted Emission ............................................................................... 29 5.8. Antenna Requirement ................................................................................................... 32 6. T E S T S E T U P P H O T O S O F T H E E U T ......................................... 33 7. E X T ER N A L A N D I N T E R N A L P HO T O S O F T H E E U T ...................... 34 Report No.: MTEB22111522-R2 Page 4 of 34 1. R e v i s i o n H i s t o r y Revision Issue Date Revisions Revised By 00 2022-12-12 Initial Issue Alisa Luo Report No.: MTEB22111522-R2 Page 5 of 34 2. T E S T ST A N D A R D S The tests were performed according to following standards: The tests were performed according to following standards: FCC Rules Part 15.247: Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz. ANSI C63.10:2013 : Am…

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Model No.: GG-AT 50EW RE TEST SETUP Model No.: GG-AT 50EW CE TEST SETUP