2BVLC-PREXLASER ENGRAVER

LASER ENGRAVER Prex Table of Contents 1.FCC Requirement ........................................................................................1 2.Laser Engraver Introduction ......................................................................5 3.Packing List .................................................................................................6 4.Assembly Steps ...........................................................................................11 5.Machine Calibration ...................................................................................22 6.Machine Testing ..........................................................................................24 Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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. 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: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator & your body. 11 FCC Requirement 1. Prex engraves and cuts materials through a high-energy diode laser beam. Hazards associated with high-energy diode laser beams include causing fires, generating harmful and/or irritating toxic smoke, but more importantly, damage to the eyes and skin. 2. Laser engravers are classified into several internationally recognized categories based on their performance and injury risk. Prex belongs to Class IV (IEC standard Class 4 focuses on US FDA classification). 2 ! CAUTION ! Laser Class Class Definition Class I Class IIa Class II Class IIIa Class IIIb Class IV Class I laser radiation levels are not considered hazardous. Class IIa laser radiation levels are not considered hazardous for viewing times less than or equal to 1×10³ seconds, but are considered chronic viewing hazards for viewing times greater than 1×10³ seconds. Class II laser radiation levels are considered chronic viewing hazards. Class IIIa laser radiation levels, depending on irradiance, may be acute beam-in-the-eye viewing hazards or chronic viewing hazards; if viewed directly with optical instruments, they are acute viewing hazards. Class IIIb laser radiation levels are considered acute direct radiation hazards to the skin and eyes. Class IV laser radiation levels are considered acute direct and scattered radiation hazards to the skin and eyes, as well as direct and scattered radiation hazards to the skin and eyes. 3. High-energy laser beams can cause serious eye injuries, including blindness, and severe skin burns. 4. Improper use of control devices or modification of safety functions may result in serious eye injuries and burns. Please wear personal protective equipment (PPE. Safety glasses are designed to filter specific wavelengths of laser. The provided Prex safety glasses are specifically designed for the laser module) when using the engraver. Do not stare directly at the laser beam; Do not aim the laser beam at reflective surfaces; Do not operate the laser near the Prex without wearing PPE; Do not allow unsupervised access to the Prex by children; Do not let pets approach the Prex; Do not modify or disable any safety features of the laser system; Do not touch the high-energy laser beam. 3 4 We strongly recommend placing the machine in a well-ventilated room with a sealed door and curtains on windows to effectively avoid direct viewing of the laser beam as well as smoke, steam, particles, and other highly toxic substances. The high-energy diode laser beam generates extremely high temperatures and a large amount of heat due to material combustion during engraving and cutting. Certain materials are prone to ignition during cutting operations, producing flames, smoke, and steam. Although Prex has built-in flame sensors, this technology should not be considered 100% accurate and should only be used as a warning system. During Prex operation, if flames are detected, the machine will stop the laser and sound an alarm for abnormal conditions. Please pay attention to the machine's operating status. During operation, ensure that any flash fire/flame is properly controlled and extinguished. 5. 6. 7. 8. 9. 7 8 10 9 16 15 14 13 12 11 17 1 2 3 456 1. Y-axis motor 2. X-axis frame 3. Laser module 4. Touch screen 5. Synchronous shaft 6. Support feet 7. Left frame 8. Rear frame 9. X-axis motor 10. Laser bracket 11. Power port 12. USB port 13. TF card port 14. Emergency stop 15. Front frame 16. Right frame 17. Power switch 5 Laser Engraver Introduction Left frame module Laser bracket module Right frame module Front frame…

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Rev 1/26/2023 Yunnandelishangmaoyouxiangongsi Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-04-20 FCC ID: 2BVLC-PREX Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Yunnandelishangmaoyouxiangongsi 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. Yunnandelishangmaoyouxiangongsi certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Yunnandelishangmaoyouxiangongsi 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. Applicant: Yunnandelishangmaoyouxiangongsi Address: Rm 1601,1602, Bldg 2, Plot A4, Runcheng Resi, Qianwei West Rd, Xishan District, Kunming City, China Contact Person: Alvin Wang Tel.: 17852830016 Email: [email protected] Sincerely, Signature:

Yunnandelishangmaoyouxiangongsi Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: April 20, 2026 Subject; Request for Confidentiality FCC ID: 2BVLC-PREX 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 U-NII 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: Alvin Wang Title: Manager

Effective Date: April 2, 2020 QSF 7.6.4-8 – Agent Authorization Letter Template Page 1 of 1 Revision Date: Revision: 0 Yunnandelishangmaoyouxiangongsi Date：2026-04-20 Product Model Number: PreX, PreX 5w, PreX 10w, PreX 20w FCC ID：2BVLC-PREX 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 QAI Laboratories Ltd. 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 QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. Signature: By: Alvin Wang Contact Listed on FCC Wesbite Title: Manager Email: [email protected] On behalf of: Yunnandelishangmaoyouxiangongsi

Yunnandelishangmaoyouxiangongsi Declaration Letter of Model Difference Date: 2026-04-20 FCC ID: 2BVLC-PREX Tested Model Number: PreX Adding Model Number(s): PreX 5w, PreX 10w, PreX 20w All Adding Model Number(s) is/are same electrically identical as Tested Model Number. The power of the laser head varies. Yours Sincerely, Applicant: Yunnandelishangmaoyouxiangongsi Address: Rm 1601,1602, Bldg 2, Plot A4, Runcheng Resi, Qianwei West Rd, Xishan District, Kunming City, China Contact Person: Alvin Wang Tel.: 17852830016 Email: [email protected] Sincerely, Signature:

Page 1 of 5 Report No.: LGT26A166 Appendix - External Photographs of EUT Constructional Details Photo 1 Photo 2 Transmitter Page 2 of 5 Report No.: LGT26A166 Appendix - External Photographs of EUT Constructional Details Photo 3 Photo 4 Page 3 of 5 Report No.: LGT26A166 Appendix - External Photographs of EUT Constructional Details Photo 5 Photo 6 Page 4 of 5 Report No.: LGT26A166 Appendix - External Photographs of EUT Constructional Details Photo 7 Photo 8 Page 5 of 5 Report No.: LGT26A166 Appendix - External Photographs of EUT Constructional Details Photo 9 Photo 10

Label Size: 27*53mm Model Number: PreX FCC ID: 2BVLC-PREX

Page 1 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 1 Photo 2 Page 2 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 3 Photo 4 ANT Page 3 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 5 Photo 6 Page 4 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 7 Photo 8 Page 5 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 9 Photo 10 Page 6 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 11 Photo 12 Page 7 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 13 Photo 14 Page 8 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 15 Photo 16 Page 9 of 9 Report No.: LGT26A166 Appendix - Internal Photographs of EUT Constructional Details Photo 17 Photo 18

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 Page 1 of 8 EMF TEST REPORT Product Name: LASER ENGRAVER Model Number: PreX, PreX 5w, PreX 10w, PreX 20w FCC ID: 2BVLC-PREX Issued For : Yunnandelishangmaoyouxiangongsi Rm 1601,1602, Bldg 2, Plot A4, Runcheng Resi, Qianwei West Rd, Xishan District, Kunming City, 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: LGT26A166HA01 Sample Received Date: Jan. 23, 2026 Date of Test: Jan. 23, 2026 ~ Feb. 04, 2026 Date of Issue: Feb. 04, 2026 Report No.: LGT26A166HA01 Page 2 of 8 TEST REPORT CERTIFICATION Applicant: Yunnandelishangmaoyouxiangongsi Address: Rm 1601,1602, Bldg 2, Plot A4, Runcheng Resi, Qianwei West Rd, Xishan District, Kunming City, China Manufacturer: DELI GROUP CO., LTD. Address: Deli industrial Zone, Ninghai County, Ningbo City, Zhejiang Province, China Product Name: LASER ENGRAVER Trademark: N/A Model Number: PreX, PreX 5w, PreX 10w, PreX 20w Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47 CFR §2.1091 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT26A166HA01 Page 3 of 8 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1091 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 EUT OPERATION CONDITION 7 2.4 CLASSIFICATION 7 2.5 TEST RESULT 8 Report No.: LGT26A166HA01 Page 4 of 8 Revision History Rev. Issue Date Revisions 00 Feb. 04, 2026 Initial Issue Report No.: LGT26A166HA01 Page 5 of 8 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: LASER ENGRAVER Test Model Number: PreX Series Number: PreX 5w, PreX 10w, PreX 20w Model Difference: The power of the laser head varies. Frequency Bands: 2.4G WLAN 802.11b/g/n(20MHz): 2412~2462MHz 802.11n(40MHz):2422~2452MHz Adapter: Input: AC 100-240 50/60Hz 2.4A Output: DC 24V 4A Hardware Version: V1.4 Software Version: v7.14.1 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: FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT26A166HA01 Page 6 of 8 2. FCC 47CFR §2.1091 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 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 According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of the 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/cm²) Limits for Occupational / controlled Exposures 0.3-3.0 614 1.63 *(100) 3.0-30 1842/f 4.89/f *(900/f 2 ) 30-300 61.4 0.163 1.0 300 - 1500 -- -- F/300 1500 – 100000 -- -- 5.0 Limits for General population / Uncontrolled Exposure 0.3-1.34 614 1.63 *(100) 1.34-30 824/f 2.19/f *(180/f 2 ) 30-300 27.5 0.073 0.2 300 - 1500 -- -- F/1500 1500 – 100000 -- -- 1.0 F= Frequency in MHz * = Plane-wave equivalent power density. Friss Formula Friss Transmission Formula: Pd = (Pout * G) / (4*pi*r²) Where Pd = power density in mW/cm² Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = Distance between observation point and the center of radiator in cm If we know the maximum gain of the antenna and the total output power to the antenna, through calculation, we will know MPE value at distance 20cm. Report No.: LGT26A166HA01 Page 7 of 8 2.3 EUT OPERATION CONDITION EUT was enabled to transmit and receive at lowest, middle and highest channels. 2.4 CLASSIFICATION The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. Warning statement to the user for keeping at least 20cm or more separation distance from the antenna should be included in the User manual. So, this device is classified as Mobile device. Report No.: LGT26A166HA01 Page 8 of 8 2.5 TEST RESULT Turn up Result Mode Turn up Power 2.4G WIFI-802.11b 15±1dBm 2.4G WIFI-802.11g 14±1dBm 2.4G WIFI-802.11n(HT20) 14±1dBm 2.4G WIFI-802.11n(HT40) 14±1dBm The MPE result of worst mode: RF Function Max Turn up Power (dBm) Max Turn up Power (mW) ANT Gain (dBi) ANT Gain (gain of antenna in linear scale) Power Density (mW/cm²) Limit (mW/cm²) Ratio Result 2.4G WIFI 16.00 39.81 3 2.00 0.016 1 0.016 Pass Note: 1. The RF Exposure is less than the limit, complies with the exemption requirements. ※※※※※END OF THE REPORT※※※※※

---10 --- 12 ---11 9 8 7 61增益测试 （Gain Test ）6 51S参数测试 （S Parameter ）5 41电性测试报告（Test Reports ）4 31工程成品图 （Drawing）3 21承认书项目表（Spec Item ）2 11承认书封面 （Spec Cover）1 页码 （Page Code） 页数 （Number of Page） 内容 （Contents） NO. 1 BlackCable Color -40 ~ +85 ̊CStorage Temp. -40 ~ +85 ̊COperating Temp. O.D. 1.13mm // 120 mmCable Type FPCBAnten na Material Physical Properties ipexConnect or 1 WAdmitted Power Linear, VerticalPolarization 3.2 dB / m Max @ 2450 MHzCable Loss 3dBiGain (Peak) Omni-directionalRadiation -10 dB MaxReturn Loss 1.92 : 1 MaxV.S.W.R 50 0hm Nominal Impedance 2.4GHzFrequency Electrical Properties 电性测试报告 Test Reports Manufacturer: DELI GROUP CO., LTD. Address: Deli industrial Zone, Ninghai County, Ningbo City, Zhejiang Province, China S 参数测试 S Parameter Test Agilent E5071C 1 增益测试 Gain Test Antenna Radiation Pattern VS Gain 0 45 90 135 180 225 270 315 -5 -5 -15 -15 -25 -25 -35 -35 -45

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 Page 1 of 78 RF TEST REPORT Product Name: LASER ENGRAVER Model Number: PreX, PreX 5w, PreX 10w, PreX 20w FCC ID: 2BVLC-PREX Issued For : Yunnandelishangmaoyouxiangongsi Rm 1601,1602, Bldg 2, Plot A4, Runcheng Resi, Qianwei West Rd, Xishan District, Kunming City, 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: LGT26A166RF01 Sample Received Date: Jan. 23, 2026 Date of Test: Jan. 23, 2026 ~ Feb. 04, 2026 Date of Issue: Feb. 04, 2026 Report No.: LGT26A166RF01 Page 2 of 78 TEST REPORT CERTIFICATION Applicant: Yunnandelishangmaoyouxiangongsi Address: Rm 1601,1602, Bldg 2, Plot A4, Runcheng Resi, Qianwei West Rd, Xishan District, Kunming City, China Manufacturer: DELI GROUP CO., LTD. Address: Deli industrial Zone, Ninghai County, Ningbo City, Zhejiang Province, China Product Name: LASER ENGRAVER Trademark: N/A Model Number: PreX, PreX 5w, PreX 10w, PreX 20w Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC Part 15.247, Subpart C ANSI C63.10-2020 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT26A166RF01 Page 3 of 78 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST LABORATORY 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 TEST SOFTWARE AND POWER LEVEL 10 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.5 EQUIPMENTS LIST FOR ALL TEST ITEMS 12 3. EMC EMISSION TEST 14 3.1 CONDUCTED EMISSION MEASUREMENT 14 3.2 RADIATED EMISSION MEASUREMENT 24 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 37 4.1 LIMIT 37 4.2 TEST PROCEDURE 37 4.3 DEVIATION FROM STANDARD 37 4.4 TEST SETUP 37 4.5 EUT OPERATION CONDITIONS 37 4.6 TEST RESULTS 37 5. POWER SPECTRAL DENSITY TEST 38 5.1 LIMIT 38 5.2 TEST PROCEDURE 38 5.3 DEVIATION FROM STANDARD 38 5.4 TEST SETUP 38 5.5 EUT OPERATION CONDITIONS 38 5.6 TEST RESULTS 38 6. BANDWIDTH TEST 39 6.1 LIMIT 39 6.2 TEST PROCEDURE 39 6.3 DEVIATION FROM STANDARD 39 6.4 TEST SETUP 39 6.5 EUT OPERATION CONDITIONS 39 6.6 TEST RESULTS 39 Report No.: LGT26A166RF01 Page 4 of 78 7. PEAK OUTPUT POWER TEST 40 7.1 LIMIT 40 7.2 TEST PROCEDURE 40 7.3 DEVIATION FROM STANDARD 40 7.4 TEST SETUP 40 7.5 EUT OPERATION CONDITIONS 40 7.6 TEST RESULTS 40 8. ANTENNA REQUIREMENT 41 8.1 STANDARD REQUIREMENT 41 8.2 EUT ANTENNA 41 APPENDIX I - TEST RESULTS 42 1. DUTY CYCLE 42 2. BANDWIDTH 47 3. MAXIMUM CONDUCTED OUTPUT POWER 56 4. MAXIMUM POWER SPECTRAL DENSITY 61 5. UNWANTED EMISSIONS IN NON-RESTRICTED FREQUENCY BANDS 66 APPENDIX II - MEASUREMENT PHOTOS 78 Report No.: LGT26A166RF01 Page 5 of 78 Revision History Rev. Issue Date Revisions 00 Feb. 04, 2026 Initial Issue Report No.: LGT26A166RF01 Page 6 of 78 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)(2) 6dB Bandwidth PASS -- 15.247 (b)(3) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247 (d) Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) Power Spectral Density PASS -- 15.205 Restricted Band Edge Emission 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 C63.10-2020. Report No.: LGT26A166RF01 Page 7 of 78 1.1 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: 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 %. Occupied Channel Bandwidth ±0.46% RF Output Power, Conducted ±0.71dB Power Spectral Density, Conducted ±1.57dB Unwanted Emission, Conducted ±0.63dB Conducted emission ±2.80dB All Emissions, Radiated (0.009-30MHz) ±2.16dB All Emissions, Radiated (30MHz-1GHz) ±4.61dB All Emissions, Radiated (1GHz-18GHz) ±5.49dB Temperature ±0.5°C Humidity ±2% Duty Cycle ±2.3% Note: The measurement uncertainty is not included in the test result. Report No.: LGT26A166RF01 Page 8 of 78 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: LASER ENGRAVER Test Model Number: PreX Series Number: PreX 5w, PreX 10w, PreX 20w Model Difference: The power of the laser head varies. Product Description: Operation Frequency: 802.11b/g/n(20MHz): 2412~2462MHz 802.11n(40MHz):2422~2452MHz Modulation Type: 802.11b(DSSS):CCK,DQPSK,DBPSK 802.11g(OFDM):BPSK,QPSK,16-QAM,64-QAM 802.11n(OFDM):BPSK,QPSK,16-QAM,64-QAM Number of Channel: 802.11b/g/n(20MHz): 11CH 802.11n(40MHz): 7CH Antenna Designation: FPC Antenna Antenna Gain(dBi): 3 Channel List: Please refer to the Note 3. Adapter: Input: AC 100-240 50/60Hz 2.4A Output: DC 24V 4A Hardware Version: V1.4 Software Version: v7.14.1 Connecting I/O Port(s): Please refer to the Note 1. Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the User Manual. 2. The antenna infor…

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Report No.: LGT26A166RF01 Page 53 of 78 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 54 of 78 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 55 of 78 802.11n(HT40)_LCH_2422MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_HCH_2452MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 56 of 78 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit 802.11b SISO 2412 15.06 <=30 Pass 2437 14.73 <=30 Pass 2462 14.03 <=30 Pass 802.11g SISO 2412 14.48 <=30 Pass 2437 14.27 <=30 Pass 2462 13.35 <=30 Pass 802.11n (HT20) SISO 2412 14.36 <=30 Pass 2437 14.21 <=30 Pass 2462 13.33 <=30 Pass 802.11n (HT40) SISO 2422 14.40 <=30 Pass 2437 14.05 <=30 Pass 2452 13.53 <=30 Pass Note1: Antenna Gain: Ant1: 3.00dBi; Report No.: LGT26A166RF01 Page 57 of 78 3.2 Test Graph 3.2.1 Power 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 58 of 78 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 59 of 78 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 60 of 78 802.11n(HT40)_LCH_2422MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_HCH_2452MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 61 of 78 4. Maximum Power Spectral Density 4.1 Test Result 4.1.1 PSD Mode TX Type Frequency (MHz) Maximum PSD Verdict ANT1 (dBm/100kHz) Limit (dBm/3kHz) 802.11b SISO 2412 2.94 <=8 Pass 2437 2.43 <=8 Pass 2462 1.88 <=8 Pass 802.11g SISO 2412 -4.51 <=8 Pass 2437 -4.65 <=8 Pass 2462 -5.67 <=8 Pass 802.11n (HT20) SISO 2412 -4.63 <=8 Pass 2437 -4.83 <=8 Pass 2462 -5.70 <=8 Pass 802.11n (HT40) SISO 2422 -6.93 <=8 Pass 2437 -7.46 <=8 Pass 2452 -8.11 <=8 Pass Note1: Antenna Gain: Ant1: 3.00dBi; Report No.: LGT26A166RF01 Page 62 of 78 4.2 Test Graph 4.2.1 PSD 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 63 of 78 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 64 of 78 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 65 of 78 802.11n(HT40)_LCH_2422MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_HCH_2452MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 66 of 78 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Test Result 5.1.1 Ref Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) 802.11b SISO 2412 1 2.95 2437 1 2.60 2462 1 1.99 802.11g SISO 2412 1 -4.53 2437 1 -4.81 2462 1 -5.68 802.11n (HT20) SISO 2412 1 -4.63 2437 1 -4.74 2462 1 -5.73 802.11n (HT40) SISO 2422 1 -6.99 2437 1 -7.45 2452 1 -8.15 Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. 5.1.2 CSE Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) Limit (dBm) Verdict 802.11b SISO 2412 1 2.95 -17.05 Pass 2437 1 2.60 -17.40 Pass 2462 1 1.99 -18.01 Pass 802.11g SISO 2412 1 -4.53 -24.53 Pass 2437 1 -4.81 -24.81 Pass 2462 1 -5.68 -25.68 Pass 802.11n (HT20) SISO 2412 1 -4.63 -24.63 Pass 2437 1 -4.74 -24.74 Pass 2462 1 -5.73 -25.73 Pass 802.11n (HT40) SISO 2422 1 -6.99 -26.99 Pass 2437 1 -7.45 -27.45 Pass 2452 1 -8.15 -28.15 Pass Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. Report No.: LGT26A166RF01 Page 67 of 78 5.2 Test Graph 5.2.1 Ref 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 68 of 78 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV Report No.: LGT26A166RF01 Page 69 of 78 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV Rep…

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