2A359-CT321DLabel Printer

Shenzhen Dudian Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: March 27, 2024 FCC ID: 2A359-CT321D Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Shenzhen Dudian 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 Dudian 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 Dudian Technology Co., Ltd. Address: 1101, Building 3, COFCO Chuangzhi Factory, No. 67 District, Xingdong, Xin'an, Bao'an, Shenzhen, Guangdong, China Contact Person: Qi Liu Tel.: +86-15919952986 Email: [email protected] Sincerely, Signature:

Shenzhen Dudian Technology Co., Ltd. U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: March 29, 2024 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2A359-CT321D Shenzhen Dudian Technology Co., Ltd.(“the applicant”) certifies that, as of the date of the filing of the application, CLF Import and Export Limited (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. CLF Import and Export Limited ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: CLF Import and Export Limited FRN: 0033489683 Address: 1312 17th Street #692, Denver, CO 80202, United States Signature: Contact Person: David Chen Tel: +1 949 254 2565 Email: [email protected] Applicant Company Name: Shenzhen Dudian Technology Co., Ltd. FRN: 0031797301 Address: 1101, Building 3, COFCO Chuangzhi Factory, No. 67 District, Xingdong, Xin'an, Bao'an, Shenzhen, Guangdong, China Signature: Contact Person: Qi Liu Tel: +86-15919952986 Email: [email protected]

Report No: SSP24020058A Antenna Test Report Page 1 of 4 Antenna Test Report Test Standard: IEEE 149-1979 Manufacturer: Shenzhen Dudian Technology Co., Ltd. Product Name: 2.4GHz Antenna Model: CT321D Report No.: SSP24020058A Tested Date: 2024-02-29 Issued Date: 2024-03-29 Tested By: William Liu (Engineer) Approved By: Lahm Peng (Manager) Prepared By: Shenzhen ZRLK Testing Technology Co., Ltd. 1F, No. 35 Building, Changxing Technology Industrial Park, Yutang Street, Guangming New District, Shenzhen City, Guangdong Province, China Tel.: +86-755-33019599 Fax.: +86-755-33019599 Website: www.zrlklab.com Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen ZRLK Testing Technology Co., Ltd. Report No: SSP24020058A Antenna Test Report Page 2 of 4 1. General Information 1.1 Product Information Manufacturer Manufacturer: Shenzhen Dudian Technology Co., Ltd. Address of Manufacturer: 1101, Building 3, COFCO Chuangzhi Factory, No. 67 District, Xingdong, Xin'an, Bao'an, Shenzhen, Guangdong, China General Description of Antenna Product Name: 2.4GHz Antenna Model No.: CT321D Frequency Range: 2400MHz-2483.5MHz Type of Antenna: PCB Antenna Antenna Gain: 0dBi (Max.) Impedance: 50 ohm Antenna View (15mm*5mm) 1.2 Test Methodology All measurements contained in this report were conducted with standards IEEE 149-1979 for IEEE Standard Test Procedures for Antennas. 1.3 Test Facilities Testing Lab: Shenzhen ZRLK Testing Technology Co., Ltd. All measurement facilities used to collect the measurement data are located at 1F, No. 35 Building, Changxing Technology Industrial Park, Yutang Street, Guangming New District, Shenzhen City, Guangdong Province, China Report No: SSP24020058A Antenna Test Report Page 3 of 4 2. OTA Test 2.1 Gain Frequency Peak Gain (dBi) Polarity 2402MHz 0 Horizontal 2402MHz -0.88 Vertical 2442MHz -1.47 Horizontal 2442MHz -2.02 Vertical 2480MHz -2.46 Horizontal 2480MHz -2.98 Vertical 2.2 Radiation Pattern View Report No: SSP24020058A Antenna Test Report Page 4 of 4

Shenzhen Dudian Technology Co., Ltd. Date: March 29, 2024 Product Model Number: CT321D FCC ID: 2A359-CT321D To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By: Qi Liu Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: +86-15919952986 On behalf of: Shenzhen Dudian Technology Co., Ltd.

Shenzhen Dudian Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: March 29, 2024 Subject; Request for Confidentiality FCC ID: 2A359-CT321D 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 Software Security Requirements for UNII devices 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: Qi Liu Title: Manager

Report No: SSP24020058-1E FCC ID: 2A359-CT321D Annex of Test Report Annex D. Label and Information FCC Label Sample FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location

FCC ID: 2A359-CT321D RF Exposure Evaluation Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation WiFi mode Mode Output power to antenna (dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result GFSK 2.9 2(±1) 3 2 0.0004 1.0 PASS Remark: antenna gain=0dBi

CCUT Testing & Certification Report No: SSP24020058-1E FCC Test Report Page 1 of 32 FCC TEST REPORT FCC ID: 2A359-CT321D Report No. : SSP24020058-1E Applicant : Shenzhen Dudian Technology Co., Ltd. Product Name : Label Printer Model Name : CT321D Test Standard : FCC Part 15.247 Date of Issue : 2024-03-29 Shenzhen CCUT Quality Technology Co., Ltd. 1F, Building 35, Changxing Technology Industrial Park, Yutang Street, Guangming District, Shenzhen, Guangdong, China; (Tel.:+86-755-23406590 website: www.ccuttest.com) This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd. CCUT Testing & Certification Report No: SSP24020058-1E FCC Test Report Page 2 of 32 Test Report Basic Information Applicant..................................: Shenzhen Dudian Technology Co., Ltd. Address of Applicant...............: 1101, Building 3, COFCO Chuangzhi Factory, No. 67 District, Xingdong, Xin'an, Bao'an, Shenzhen, Guangdong, China Manufacturer..........................: Shenzhen Dudian Technology Co., Ltd. Address of Manufacturer........: 1101, Building 3, COFCO Chuangzhi Factory, No. 67 District, Xingdong, Xin'an, Bao'an, Shenzhen, Guangdong, China Product Name.........................: Label Printer Brand Name.............................: - Main Model..............................: CT321D Series Models..........................: - Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C63.10-2013 Date of Test .............................: 2024-03-02 to 2024-03-07 Test Result...............................: PASS Tested By ................................: (Colin Chen) Reviewed By............................: (Lieber Ouyang) Authorized Signatory............: (Lahm Peng) Note : This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd.. All test data presented in this test report is only applicable to presented test sample. CCUT Testing & Certification Report No: SSP24020058-1E FCC Test Report Page 3 of 32 CONTENTS 1. General Information ....................................................................................................................................................5 1.1 Product Information .............................................................................................................................................5 1.2 Test Setup Information..........................................................................................................................................6 1.3 Compliance Standards ...........................................................................................................................................7 1.4 Test Facilities ........................................................................................................................................................7 1.5 List of Measurement Instruments ..........................................................................................................................8 1.6 Measurement Uncertainty .....................................................................................................................................8 2. Summary of Test Results .............................................................................................................................................9 3. Antenna Requirement ............................................................................................................................................... 10 3.1 Standard and Limit.............................................................................................................................................. 10 3.2 Test Result .......................................................................................................................................................... 10 4. Conducted Emissions ................................................................................................................................................ 11 4.1 Standard and Limit.............................................................................................................................................. 11 4.2 Test Procedure.................................................................................................................................................... 11 4.3 Test Data and Results .......................................................................................................................................... 12 5. Radiated Emissions ................................................................................................................................................... 15 5.1 Standard and Limit.............................................................................................................................................. 15 5.2 Test Procedure.................................................................................................................................................... 15 5.3 Test Data and Results .......................................................................................................................................... 17 6. Band-edge Emissions(Radiated) ............................................................................................................................... 21 6.1 Standard and Limit.............................................................................................................................................. 21 6.2 Test Procedure.................................................................................................................................................... 21 6.3 Test Data and Results .....................................................................…

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