2A5FV-X-PLUS33D Printer

FCC Statement 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. 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. 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 environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

ZHEJIANG QIDI TECHNOLOGY CO.,LTD 2023-5-15 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (2A5FV-X-PLUS3) [ZHEJIANG QIDI 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, Name: Xue Daqiang Title: Manager ZHEJIANG QIDI TECHNOLOGY CO.,LTD 2023-5-15 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (2A5FV-X-PLUS3) [ZHEJIANG QIDI 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 an entity producing “covered” equipment. Sincerely, Name: Xue Daqiang Title: Manager

Attestation Statements 2023-5-15 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 (2A5FV-X-PLUS3) (ZHEJIANG QIDI TECHNOLOGY CO.,LTD), the undersigned, hereby authorize (USA MEIHUA TRADING INC) to act as our designated U.S. agent for service of process, ZHEJIANG QIDI 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. (USA MEIHUA TRADING INC) accepts the responsibility to act as designated U.S. agent for service of process. Applicant Information： Company name: ZHEJIANG QIDI TECHNOLOGY CO.,LTD Contact Name: Xue Daqiang Address: No.29 Building, Number 178, East 2 Road,Gexiang New District, Ruian Economic Development Zone, Ruian, Wenzhou City, Zhejiang Province, China Telephone No: 0577-66881077 Email: [email protected] Signature: Xue Daqiang/Manager U.S. Agent Information: Company Name: USA MEIHUA TRADING INC Address: 5379 Pine Valley Ct Boulder CO 80301 United States FRN: 0033406166 Contact Name: Harley Quinn Telephone No: 1-312-363-9424 Email: [email protected] Signature Harley Quinn /Manager

ZHEJIANG QIDI TECHNOLOGY CO.,LTD 2023-5-15 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR EUT NAME: 3D Printer MODEL: X-Plus3, X-MAX3, X-Smart3, X-Mate3 FCC ID: 2A5FV-X-PLUS3 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 - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Company name: ZHEJIANG QIDI TECHNOLOGY CO.,LTD Address: No.29 Building, Number 178, East 2 Road,Gexiang New District, Ruian Economic Development Zone, Ruian, Wenzhou City, Zhejiang Province, China Signature: Xue Daqiang/Manager

ZHEJIANG QIDI TECHNOLOGY CO.,LTD 2023-5-15 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen DL Testing Technology 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, Company name: ZHEJIANG QIDI TECHNOLOGY CO.,LTD Address: No.29 Building, Number 178, East 2 Road,Gexiang New District, Ruian Economic Development Zone, Ruian, Wenzhou City, Zhejiang Province, China Signature: Xue Daqiang/Manager

ZHEJIANG QIDI TECHNOLOGY CO.,LTD Product Similarity Declaration Company: ZHEJIANG QIDI TECHNOLOGY CO.,LTD Address: No.29 Building, Number 178, East 2 Road,Gexiang New District, Ruian Economic Development Zone, Ruian, Wenzhou City, Zhejiang Province, China Product Name: 3D Printer Model Number: X-Plus3, X-MAX3, X-Smart3, X-Mate3 FCC Identifier: 2A5FV-X-PLUS3 We (ZHEJIANG QIDI TECHNOLOGY CO.,LTD) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the model name and appearance color and power.. Client’s signature Client’s name / title : Xue Daqiang / Manager Contact information /address: No.29 Building, Number 178, East 2 Road,Gexiang New District, Ruian Economic Development Zone, Ruian, Wenzhou City, Zhejiang Province, China Date: 2023-05-17

Size:16*14mm MODEL: X-Plus3 FCC ID: 2A5FV-X-PLUS3 Label location

ANT

FCC ID: 2A5FV-X-PLUS3 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 2.4G mode Channel Output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm2) Limit (mW/cm2) Result 802.11b 17.19 52.36 0.01311 1.0 Pass 802.11g 14.50 28.18 0.00706 1.0 Pass 802.11n HT20 14.81 30.27 0.00758 1.0 Pass 802.11n HT40 14.10 25.70 0.00644 1.0 Pass Remark: antenna gain=1.0dBi

Antenna Specification Specifications Manufacture: Shenzhen Qingmai Bicycle Co.,Ltd Summary ITEM SPEC. Model Name PCB Antenna Center Frequency 2402 MHz -2.36dBi 2441 MHz 1.00 dBi 2480 MHz -2.74 dBi MAX. GAIN 1dBi Polarization Horizontal Azimuth Beam Pattern Omni-directional Impedance 50 Ω Antenna Length 10.53mm Antenna Photo & Length（mm） 1. Result Center Frequency Maximum Ant Gain H -2.36 dBi 2402MHz V -3.43 dBi H 1.00 dBi 2441 MHz V -3.85 dBi H -4.74 dBi 2480 MHz V -5.75 dBi 2. Main antenna : 2402 MHz 2.1 Horizontal 2.2 Vertical 3. Main antenna : 2441 MHz 3.1 Horizontal 3.2 Vertica 4. Main antenna : 2480 MHz 4.1 Horizontal 4.2 Vertical 2. Antenna performance

Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20230420016E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 56 FCC Part 15C Test Report FCC ID: 2A5FV-X-PLUS3 Applicant: ZHEJIANG QIDI TECHNOLOGY CO.,LTD Address: No.29 Building, Number 178, East 2 Road,Gexiang New District, Ruian Economic Development Zone, Ruian, Wenzhou City, Zhejiang Province, China Manufacturer: ZHEJIANG QIDI TECHNOLOGY CO.,LTD Address: No.29 Building, Number 178, East 2 Road,Gexiang New District, Ruian Economic Development Zone, Ruian, Wenzhou City, Zhejiang Province, China EUT: 3D Printer Trade Mark: Model Number: X-Plus3 X-MAX3, X-Smart3, X-Mate3 Date of Receipt: Apr. 05, 2023 Test Date: Apr. 05, 2023 – Apr. 20, 2023 Date of Report: Apr. 20, 2023 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Building C, Shuanghuan, No.8, Baoqing Road, Baolong Industrial Zone, Baolong Street, Longgang District, Shenzhen, Guangdong, China Applicable Standards: FCC PART 15 C 15.247 ANSI C63.10:2013 Test Result: Pass Report Number: DL-20230420016E Prepared (Test Engineer): Pxing Huang Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20230420016E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 56 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 4 1.1 MEASUREMENT UNCERTAINTY 4 2 . GENERAL INFORMATION 5 2.1 GENERAL DESCRIPTION OF EUT 5 2.2 DESCRIPTION OF TEST MODES 6 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 7 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 7 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 7 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 8 3 . EMC EMISSION TEST 9 3.1 CONDUCTED EMISSION MEASUREMENT 9 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 9 3.1.2 TEST PROCEDURE 9 3.1.3 DEVIATION FROM TEST STANDARD 9 3.1.4 TEST SETUP 10 3.1.5 EUT OPERATING CONDITIONS 10 3.1.6 TEST RESULTS 10 3.2 RADIATED EMISSION MEASUREMENT 13 3.2.1 RADIATED EMISSION LIMITS 13 3.2.2 TEST PROCEDURE 14 3.2.3 DEVIATION FROM TEST STANDARD 14 3.2.4 TEST SETUP 14 3.2.5 EUT OPERATING CONDITIONS 15 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 16 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 17 3.2.8 TEST RESULTS (1GHZ~25GHZ) 19 3.3 RADIATED BAND EMISSION MEASUREMENT 23 3.3.1 TEST REQUIREMENT: 23 3.3.2 TEST PROCEDURE 23 3.3.3 DEVIATION FROM TEST STANDARD 23 3.3.4 TEST SETUP 24 3.3.5 EUT OPERATING CONDITIONS 24 3.4 CONDUCTED BAND EDGE EMISSION&CONDUCTED SPURIOUS EMISSIONS MEASUREMENT 29 3.4.1 APPLICABLE STANDARD 29 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20230420016E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 56 Table of Contents Page 3.4.2 TEST PROCEDURE 29 3.4.3 DEVIATION FROM STANDARD 29 3.4.4 TEST SETUP 29 3.4.5 EUT OPERATION CONDITIONS 29 3.4.6 TEST RESULTS 29 4 . AVERAGE OUTPUT POWER 37 4.1 APPLIED PROCEDURES / LIMIT 37 4.1.1 TEST PROCEDURE 37 4.1.2 DEVIATION FROM STANDARD 37 4.1.3 TEST SETUP 37 4.1.4 EUT OPERATION CONDITIONS 37 4.1.5 TEST RESULTS 38 5 . POWER SPECTRAL DENSITY TEST 44 5.1 APPLIED PROCEDURES / LIMIT 44 5.1.1 TEST PROCEDURE 44 5.1.2 DEVIATION FROM STANDARD 44 5.1.3 TEST SETUP 44 5.1.4 EUT OPERATION CONDITIONS 44 5.1.5 TEST RESULTS 45 6 . 6DB BANDWIDTH TEST 48 6.1 APPLIED PROCEDURES / LIMIT 48 6.1.1 TEST PROCEDURE 48 6.1.2 DEVIATION FROM STANDARD 48 6.1.3 TEST SETUP 48 6.1.4 EUT OPERATION CONDITIONS 48 6.1.5 TEST RESULTS 49 7 . ANTENNA REQUIREMENT 52 7.1 STANDARD REQUIREMENT 52 7.2 EUT ANTENNA 52 8 . TEST SEUUP PHOTO 53 9 . EUT PHOTO 55 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20230420016E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 56 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.247) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.205, 15.209, 15.247(d) Radiated Spurious Emission PASS 15.205, 15.247(d) Band Edge Emission& Conducted Spurious Emissions PASS 15.247(b) Average Output Power PASS 15.247(a)(2) 6dB Bandwidth PASS 15.247(e) Power Spectral Density PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report 1.1 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 Conducted Emission Test ±2.56dB 2 RF power,conducted ±0.42dB 3 Spurious emissions,conducted ±2.76dB 4 All emissions,radiated(<1G) ±3.65dB 5 All emissions,radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20230420016E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 56 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product Name: 3D Printer Trademark Model No.: X-Plus3 X-MAX3, X-Smart3, X-Mate3 Model Difference The product's different for model number, appearance color and power. Operation Frequency: 2412~2462 MHz for 802.11b/g/nHT20 2422~2452 MHz for 802.11nHT40 Channel numbers: 11 Channels for 802.11b/g/n(HT20) 7 channels for 802.11nHT40 Channel separation: 5MHz Modulation technology: 802.11b: DSSS (CCK, DQPSK, DBPSK) 802.11g/n(20): DSSS (CCK, DQPSK,DBPSK)+OFDM (QPSK, BPSK, 16-QAM, 64-QAM) Rate of Transmitter 802.11b: 11/5.5/2/1Mbps 802.11g: 54/48/36/24/18/12/9/6Mbps 802.11n: up to 150Mbps Antenna Type: PCB Antenna Antenna gain: 1.0dBi Power supply: AC 100-240V 50/60Hz 900W max Note: 1.For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. 2.The EUT’s all information provided by…

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Radiated Measurement Photos Conducted Measurement Photos